In the Ben 10 universe, the Omnitrix and its succeeding models possess the DNA of various alien races that the titular protagonist uses. Thus this not only lists the alien forms that Ben Tennyson and others assumes, but also the sapian races that the Omnitrix obtained a genetic blueprint from.

Aliens introduced in Ben 10Edit


Voiced by:

  • Steven Blum - Ben 10, Ben 10: Omniverse
  • James Remar - Ben 10: Alien Force, Ben 10: Ultimate Alien
  • John DiMaggio - Ben 10: Alien Force: Vilgax Attacks, Ben 10: Ultimate Alien: Cosmic Destruction, Ben 10: Galactic Racing
  • Fred Tatasciore - Punch Time Explosion

Vilgax had been exiled from his homeworld in the year 1773 for "ambitious disobedience." He is summoned to Earth by a distress signal sent by a time-traveling Maltruant. There, he makes repairs to Maltruant's damaged transport in exchange for a Chronosapien Time Bomb that he would use some time later. During this, Vilgax encounters George Washington and a time-traveling 16-year-old Ben Tennyson. Watching Ben transform into various aliens is what initially fostered Vilgax's interest in the Omnitrix.

Back when Max was still a young Plumber, Vilgax was stealing warheads from a military base. Max and his partner Phil showed up. In the resulting fight, Vilgax was stuck to a nuclear warhead by Max, and launched into his own ship. At that time, Vilgax was only slightly larger than a human man, compared to his now colossal size, an addition to his cybernetic augmentation.


Voiced by:

Heatblast is a Pyronite from the star Pyros. Heatblast appears to be a magma-based lifeform whose body is composed of a bright inner magma body covered by a reddish-brown charcoal-like crust.

Heatblast is Ben's first transformation, accidentally activated in the pilot episode of the original series, "And Then There Were 10" when Ben was trying to remove the Omnitrix immediately after it first attached to him. During the original series, when Ben caught a cold, it gave Heatblast cryokinetic powers instead of the normal pyrokinesis. This returned to normal once Ben got over his cold.

Ben later regained access to Heatblast in "Ben 10: Ultimate Alien" "Ben 10,000 Returns", and also as his 10-year-old self in "The Forge of Creation". Heatblast reappears through the Ultimatrix in "Viktor: The Spoils," when 16-year-old Ben uses him to defeat King Xarion, now in Dr. Viktor's body. He now has a darker skin tone and his eyes are not connected to the fire on his head, like Alan Albright (the Pyronite-hybrid Plumber's son). Heatblast retains this design in "Ben 10: Omniverse."

16-year-old Heatblast made his Omniverse debut in "A Jolt From the Past" to chase Corvo, while 11-year-old Heatblast made his Omniverse debut in "Trouble Helix" to fight Malware on Galvan B. In Omniverse, for both Bens, he looks similar to his appearance in Ultimate Alien. His eyes are once again connected to the fire on his head, his shoulder plates are slightly tilted up, and the 16-year-old Heatblast is taller and much more muscular. He wears the Omnitrix on his chest.

Charcoal ManEdit

Voiced by:

Charcoal Man is an alternate counterpart of Heatblast.

Alan AlbrightEdit

Voiced by:

  • Zeno Robinson - Ben 10: Alien Force, Ben 10: Ultimate Alien
  • Bumper Robinson - Ben 10: Omniverse

Alan Albright is a Human/Pyronite hybrid. Alan is a short, African-American teenager with short black hair. In Alien Force and Ultimate Alien, he was wearing a white undershirt and grey pants.

Alan's Pyronite form was almost indistinguishable from Heatblast, especially when he had his father's Plumber Badge on his chest, however, Alan is shorter and thinner than Heatblast.

In Omniverse, Alan has big black dotted eyes, earrings and longer hair and is shorter than in Alien Force and Ultimate Alien. He wears an orange hoodie that has a basketball in the middle surrounded by orange flames.

Alan's Pyronite form is equally shorter and doesn't wear his badge, instead having a crack on his chest that is shaped like a flame. His eyes are connected to the fire on his head and his forehead is smaller.


Voiced by:

Wildmutt/Wildpup is a Vulpimancer from the garbage planet Vulpin, and appears as a large dog-like creature with no visible eyes or tail. Without eyes, however, Vulpimancers use echolocation, a heightened sense of smell, and gills on their neck for thermography. However, a loud sound or a horrific smell can overwhelm them. According to various profiles on wildmutt, the porcupine-like quills on his back supplement his sonar and can also serve as weapons, either protecting him while he's rolling, or as projectiles fired off at will. This ability is unique to adult Vulpimancers, and as Ben's version is only ten years old, these quills have not fully developed.

Ben first transformed into wildmutt in "And Then There Were 10" after his experimentation with the Omnitrix, and is thus his first intentional transformation. In "Ben 10: Ultimate Alien," wildmutt's design was basically unchanged, except that his lips were orange instead of black and the Ultimatrix is on his chest. Vulpimancers made a few brief appearances in the third series, most of them were off-screen and not by Ben. His first official debut in "Ben 10: Ultimate Alien" was in "Prisoner #775 is Missing", where he was used to track the invisible alien prisoner. Gwen felt the need to shout out wildmutt's name when he transformed because of wildmutt's inability to speak.

In "Ben 10: Omniverse", Wildmutt's design is mostly unchanged, and his Omnitrix is on a green collar with white stripes. 16-year-old Wildmutt made his Omniverse debut in "Have I Got a Deal For You" to track down the Screegit, while 11-year-old Wildmutt debuted in "Evil's Encore" frees himself, Gwen, and Grandpa Max from a sack.

The Ben 10,000 Wildmutt has the Omnitrix symbol on his head and has a tail.

Ultimate WildmuttEdit

Voiced by:

Ultimate Wildmutt made his official debut in "Prisoner #775 is Missing" when he wanted to stop the Merlinisapien (ChamAlien's species) from attacking the colonel's house. He is redish-orange in color with spines on his vertebral column. Ultimate Wildmutt has wildmutt's incredible sense of smell and is physically stronger than him. He is also more agile than wildmutt, and has an even more acute sense of smell, enhanced hearing, and a sharp tail, claws, and bigger teeth for more effective close range combat. Ultimate Wildmutt was also used on the last episode of Ben 10: Ultimate Alien "The Ultimate Enemy: Part 2" where Ben used him to track down the Diagon and his friends to get back in the fight.


Voiced by:

Dog-Nabbit is an alternate counterpart of Wildmutt.


Voiced by:

Diamondhead is a Petrosapien from the planet Petropia. The planet was destroyed by Vilgax with the help of Tetrax, who unknowingly helped him create the weapon that destroyed it. This was originally the case, but in "The Secret of Chromastone", it was further revealed that the object used to destroy Petropia was a crystal that was to be held by a Sugilite (the Crystalsapiens; Chromastone's race) and used to protect (or in this case, recreate) the planet. Petropia was reborn in this episode, and all Petrosapiens now resemble Ben's Diamondhead form. Diamondhead is also the first of Ben's aliens to receive a name, after being indirectly named by Max.

Diamondhead is a silicon based alien and possesses super density molecular structure, making him invulnerable. Diamondhead can control his crystal physiology at will, allowing him to create crude crystal weapons from any part of his body on demand or fire crystal shards from his hands. This same ability also allows him to regenerate to an extent, such as re-growing lost limbs. In addition to growing crystal from himself, Diamondhead can grow crystal over the ground. His crystal body acts as a prism that can refract light and energy beams. The one drawback to Diamondhead's crystal form is the crystal itself, which can shatter if exposed to sufficiently strong sonic vibrations. While Petrosapiens can regenerate limbs, there is a limit to how much damage they can recover from.

Ben first transformed into Diamondhead to destroy Vilgax's giant robot sent to retrieve the Omnitrix in "And Then There Were 10". In the planning stages, Diamondhead was set up to be one of the aliens Ben would have discovered later on, while Cannonbolt would have been one of the original ten.Template:Citation needed

Diamondhead was regained after Chromastone was destroyed by Vilgax in the 2-part "Ben 10: Alien Force" episode "Vengeance of Vilgax". The color of his crystals is changed slightly and he doesn't wear a dress. Instead he is composed of a material similar to Chromastone and has the Omnitrix located on his chest. He now has green eyes.

Diamondhead made his "Ben 10: Ultimate Alien" debut in "Basic Training" to defeat Kodek, with no difference from his design in "Ben 10: Alien Force".

In "Ben 10: Omniverse", Diamondhead has a black shirt with a green stripe in the middle. He also has black pants. The Omnitrix is on his belt. 11-year-old Diamondhead is the same. Diamondhead made his Omniverse debut in "It Was Them" to fight Slamworm, while Diamondhead made his debut in "Trouble Helix" defeating Malware.


Voiced by:

XLR8 (pronounced "accelerate") is a Kineceleran from the planet Kinet.

Resembling a semi-armored velociraptor, XLR8 has ball-shaped feet, scissor-like claws and a retracting helmet with a windshield. XLR8 has the ability to manipulate friction to instantaneously reach speeds of 500 mph, allowing him to climb up walls and run on water with relative ease and also have a degree of enhanced strength. Manipulating friction also allows him to come to a dead stop easily on most surfaces. Using his speed, XLR8 can perform a number of unique feats, like creating tornadoes through centrifugal force, either through running in a small circle or spinning, and can deliver speed-enhanced attacks in quick succession. Amazing reflexes accompany this speed, allowing XLR8 to quickly dodge attacks. Ben first transformed into XLR8 in the episode "And Then There Were 10" when he decided to play around with his new-found power, and to get revenge on Cash and JT, the bullies he fought with earlier. XLR8 is faster than the speed of lightning, as shown in Monster Weather.

Though Ben clearly favors Four Arms over all the other aliens, he has shown a preference for XLR8, as the alien's excessive speed has proven itself very reliable.

XLR8 was first (and last) used by the Ultimatrix in the crossover special "Ben 10 / Generator Rex: Heroes United" to save Dr. Holiday from Alpha Nanite.

In Omniverse, XLR8 has a green chest instead of white. Ben as XLR8 in Omniverse looks exactly same as in the original series except that the Omnitrix is green, he has three blue stripes on his tail, he is shorter, and his whole neck is white. While XLR8 made his debut in "Hot Stretch" to win a game of street hockey, XLR8 made his debut in "Trouble Helix" when Ben was stuck as XLR8 until Azmuth made XLR8 revert to human.


Voiced by:

Speedyquick is an alternate counterpart of XLR8. He looks just like his 16 year old dimensional counterpart, but he has bluish-white skin, blue eyes, and a dark blue chest. His tail also has bluish-white stripes.

Helen WheelsEdit

Voiced by:

  • Juliet Landau - Ben 10: Alien Force, Ben 10: Ultimate Alien, Ben 10: Omniverse

Helen Wheels looks like a regular Kineceleran with three fingers instead of claws and green eyes. She wears a black-green colored outfit. In Omniverse, her eyes were changed to white. She now has two black lines on the end of her tail and her skin color is lighter with her helmet also being shorter. She now wears a standard Plumber Suit. Young Helen looked similar to her teenager appearance but she had bigger head and eyes and lacked elbow spikes. Helen's human form was only seen for a short time. She had flipped-up, spiky light blue hair and wore the Amalgam Kids' outfit. She also had light blue eyes.

Grey MatterEdit

Voiced by:

Grey Matter is a Galvan, a gray-skinned, frog-like alien that is 5 inches tall. The Galvans are a highly intelligent race that are responsible for many of the technologies in the series, including the Omnitrix, the Null Void Projector, the Null Void itself, their planet, Galvan Mark II (since their original homeworld, Galvan Prime, was destroyed by the Highbreed in the "Ben 10: Alien Force" "War of the Worlds" 2-parter), and the Galvanic Mechamorphs (Upgrade's species), among others. The most notable Galvan is the Omnitrix's creator, Azmuth; notability that is based in no small part on his pioneering work in creating the Null Void and his creating the Omnitrix. He claims to be the most intelligent being in at least three galaxies, arguably five.

Ben usually dislikes becoming Grey Matter due to his small size. He is mostly accessed by accident and a running gag in the franchise is that he is accessed when Ben wants a large, powerful alien. However, as Grey Matter, Ben gains a Galvan's calculative and technical intellect, being able to outwit larger enemies, create almost anything from spare parts, deduce the function of any device at a glance, and analytically help in difficult situations. Grey Matter's size allows him to squeeze into small spaces and climb walls due to tiny suction cups on his skin, and he has sharp teeth and slimy skin that make him difficult to grab.

Ben first intentionally transformed into Grey Matter in order to search for a rare gold Sumo Slammer Trading Card in cereal boxes in a supermarket in "Washington B.C.". Grey Matter returned in "Ben 10: Omniverse," where his white jumpsuit is now green with a belt and a pair of gloves, and the stripe on his head is now gone. Unlike most of the other aliens that had their Omnitrix moved, Grey Matter's remained on his back. He made a brief debut in "Have I Got a Deal for You" as one of three straight accidental transformations.


Voiced by:

Brainfrog is an alternate counterpart of Grey Matter. Brainfrog looks almost identical to 11 year old Grey Matter except his eyes are light blue and his jumpsuit is blue. The rim on the Omnitrix is gold and its energy is light blue.

Four ArmsEdit

Voiced by:

Four Arms is a Tetramand from the desert planet Khoros, resulting in the strength-oriented species. Tetramands are 12-foot-tall powerhouses with armored skin and extremely dense musculature, making them unmatched in pure physical strength (although the females are substantially stronger than the males). However, the muscle mass and heavy skin makes Tetramands relatively slow and unable to use things normally used by smaller life forms. According to Azmuth's father in "Ben 10: Destroy All Aliens," The pyramids of Egypt were created by Tetramands.

Four Arms is one of Ben's favorite alien forms. Utilizing Four Arms' strength, Ben can create shock waves simply by pounding the ground or clapping all four of his hands together, dubbed the "Big Smack", and his leg strength allows him to cross entire city blocks in a single jump. When under the effects of an illness, his strength and stamina are somewhat lessened and he develops pungent hives in his armpits. With Four Arms, Ben has a tendency to make puns about arms and has habit of saying he can do something "with three hands tied behind my back". Ben first transformed into Four Arms to fight the giant woolly mammoth that Dr. Animo had reanimated in "Washington B.C.".

Though many other cartoon series' have depicted multi-armed fighting characters, none of their ''extra'' arms really move as independently as Four Arms'.

Four Arms reappeared in "Ben 10: Ultimate Alien", wearing a much different costume and having an appearance reminiscent of a wrestler. He now has more authentic clothes of his original species, with golden bracelets, a ponytail, two gold sashes that cross over his trunk with the Ultimatrix on the center of his chest, and green eyes instead of yellow. Four Arms is regained in "Video Games" in a fight with Ssserpent, and Ben was surprised because he did not know he was still there. Ben's 10-year-old version of Four Arms made an appearance in "Ben 10: Ultimate Alien", in the episode "The Forge of Creation".

In "Ben 10: Omniverse", 16-year-old Four Arms' design resembles a moustached muscle man at a circus, and the Omnitrix is located in his belt. 11-year-old Four Arms' is the same. 16-year-old Four Arms made his Omniverse debut in "Many Happy Returns" to fight Princess Looma, while 11-year-old Four Arms made his debut in "The More Things Change: Part 1" to fight Malware. It's revealed during this "Many Happy Returns" that Tetramands are well known for making indestructible engine blocks. Kevin points out that this is the reason why his car is still able to function, despite withstanding all the punishments it had received throughout their adventures.

In "Game Over" Four Arms has a pirate style hat and wrestler-like clothing. The Omnitrix is now on his hat. His strength and stamina remain unchanged. In the Ben 10,000 version, he's more muscular, and the Omnitrix is in the center of his shirt. He also has a bigger jaw with two sharp teeth

Handy ManEdit

Voiced by:

Handy Man is an alternate counterpart of Four Arms. Handy Man has 11 year old Four Arms' appearance, except he has blue eyes and blue on his shirt instead of white. His skin is dark pink and the rim of the Omnitrix is gold.

Manny ArmstrongEdit

Voiced by:

  • Khary Payton - Ben 10: Alien Force, Ben 10: Ultimate Alien, Ben 10: Omniverse

In Alien Force, Manny Armstrong was indistinguishable from a regular Tetramand with the exception of his head, which seemed more oblong, and height. He wore a sleeveless black-green outfit, black wristlets and black pants with green pockets.

In Omniverse, he has more humanoid traits. He has five fingers and he is scrawnier, especially his lower arms, and he now no longer has his robotic hand on his lower left arm. He also has a bigger chin and slightly darker skin color. Since he became an official Plumber, he wears a Plumber Suit.

Before his encounter with Servantis, he was a regular human. He was a thin, Afro-American kid with an afro. He had big, dotted eyes, thick eyebrows and dark lips.

After his amalgamation, he looked like a regular young Tetramand with more averaged sized eyes.


Voiced by:

Ben first meets Gorvan where he was fighting a group of the Forever Knights, where he is after a mysterious component. Gorvan enlists Ben, Gwen and Kevin's help to find the rest of the components. He claims to be a Plumber and even knew Max Tennyson.

Secretly, Gorvan was working for the Highbreed and is on the run from the Plumbers. He tricked the trio into invading a Forever Knight's castle and fighting Vulkanus and his pick-axe aliens for another component.

Gorvan turned Kevin into a DNAlien and made him fight Ben, but luckily, Ben was able to defeat Kevin and change him back to normal, Gorvan then fights Ben, and used a rejuvenation machine to increase his stamina. Ben was still able to defeat him though and kept Gorvan captive with some holding-cells. It is unknown what happened to him after the game was over, though it seemed simple that he was put into Plumbers' captivity.

In Omniverse, Gorvan appears to be a short, out-of-shape Tetramand who wears a lime green and black jumpsuit and two pairs of gloves. In his disguise, he wears a Plumber Suit with a visored helmet and two sleeves large enough to fit two arms each, making it appear as if he had only two arms.


Voiced by:

Stinkfly/Stinkyfly is a Lepidopterran from the swamp planet Lepidopterra. Combining elements of a wasp, dragonfly and spider which allow them to fly with high mobility and speed, Lepidopterrans have four eye stalks that give them a wide range of vision on all sides, and shoot a toxic slime. They also have mouths with pollen ducts that can excrete streams of high-pressure, foul-smelling liquids that vary from a flammable toxin to an immobilizing jelly. Younger members of the species emit an herbicidal gas via flatulence. One weakness of a Lepidopterran is losing their ability to fly when their wings get wet.

Ben first transformed into Stinkfly in "Washington B.C.", when he had to save Gwen after she fell from the Washington Monument, and defeat Dr. Animo. Since then, Stinkfly has been among Ben's favorite flying alien forms. The 10-year-old version of Stinkfly made an appearance in the "Ben 10: Ultimate Alien" episode "The Forge of Creation". His eye color changed from orange to green, his hands are green instead of black, his teeth are white instead of green, and his Omnitrix has changed from white to green.

In Omniverse, while 16-year-old Ben's Stinkfly resembled the Original Series, with his face and pupiled eyes green, larger wings and a dark green suit he can also run out of pollen from his ducts and his pollen ducts are also his eyes as all lepertrodians see throgh there pollen ducts . While the younger version of Stinkfly reappears in "A Jolt from the Past", the current version is reintroduced in "Of Predators and Prey : Part 1".

Big BugEdit

Voiced by:

Big Bug is an alternate counterpart of Stinkfly. Big Bug looks identical to Stinkfly in Omniverse but he has a different color scheme. His skin is light purple, his wings are white and his pupils are light blue. His outfit is blue and the black parts have dark blue highlights instead of dark green. The rim of the Omnitrix is golden and its energy is light blue.


Voiced by:

Ripjaws is a Piscciss Volann of the artificial water planet Piscciss, a world made of 98% water with solid matter only at its core, which houses the planet's gravitational multiplier, the device that holds all water and the beings on the planet. Piscciss Volanns are fish-like aliens that possess the traits of Earth's oceanic fish, with many variations but share a luminescent dangle, an ability to withstand a remarkable amount of pressure and swim at great speeds by combining their legs into a tail. They are also voracious eaters, able to unhinge their jaws to bite into much larger objects and even rip through steel. The core component of the gravity multiplier is actually a piece of the Map of Infinity, which Aggregor took and Goop's anti-gravity projector replaced.

First transforming into Ripjaws in order to take the Krakken's eggs back from Jonah Melville in "The Krakken", Ben does not rely solely on this form due to the fact that he needed to stay hydrated, drying quickly if out of the water for even a few minutes. "In Ben 10: Ultimate Alien", Ben regaines access to the form in "Perplexahedron" to escape from a water trap, Ripjaw looks a bit catfish-like with Ultimatrix symbol moved in the center of his chest, larger claws, and the bioluminescent lire on his head is smaller.

In Omniverse, 11-year-old Ripjaws' design combines Original Series elements with Omniverse elements. His eyes remain like those in the Original Series, his eyebrows from Ultimate Alien are gone, his teeth are now visible but are like those in the Original Series. His tail is bigger, he has black clothing around his left shoulder, and the Omnitrix is on his left chest. His 16-year-old appearance is a mix of both versions and has a belt with the Omnitrix on it. He has re-appeared in the episode "Gone Fishin'". Ripjaws shares a number of traits with Earth's aquatic lifeforms such as alligators, eels, anglerfish, and sharks.

Piscciss Volann ActorEdit

Voiced by:

He looks like a typical Piscciss Volann.

Magister PykeEdit

Voiced by:

Like Prior Gilhil, Pyke is a veteran Plumber, and has little time for younger Plumbers that receive special preferential treatment, or as he calls them, "tadpoles" (in reference to Ben and the others). Pyke is a highly skilled combatant underwater, demonstrating zero-gravity martial artistry using his claws and tail on a level that left even Ben Tennyson in awe, despite the level of skill he had shown as Ripjaws. Not much is known about Pyke's background, but he met Magister Patelliday at least once while Patelliday was a deputy back on Piscciss.


Voiced by:

Upgrade is a Galvanic Mechamorph, a race accidentally created by the Galvans. Originally an uninhabited satellite, Galvan scientists tried to make Galvan B (Galvan Prime's moon) habitable for colonization by binding self-replicating nanotechnology to Galvan B's minerals. When a new sentient species is born as an unexpected result, the Galvans abandoned the project and allowed the first Galvanic Mechamorphs to flourish into a civilization.

Other than firing positronic plasma beams from its eye, a Galvanic Mechamorph's primary ability is to merge with technology, regardless of size or level of sophistication, making them capable of upgrading or changing it far beyond its original design (Hence Ben's nickname for that transformation). A good example of this can be found in the original series episode "Midnight Madness", where Upgrade merged with a helicopter fitted with a searchlight, and in its "Upgraded" form, the helicopter became a gunship with a laser cannon. Another ability Galvanic Mechamorphs possess is to form sharp projections made from their bodies as seen in the episode "Framed" when Kevin, as Upgrade, fended off Ben as Wildmutt. Ben himself performed a similar ability as Upgrade in the episode "Side Effects" when he merged with a motorcycle and formed spikes from the hubcaps of its wheels. While they can control non-sentient machines in that fashion, Galvanic Mechamorphs are incapable of properly controlling sentient technology. Galvanic Mechomorphs are also vulnerable to electricity and any substance also corrosive to regular metals, both of which can compromise their delicate internal workings. First becoming Upgrade to stop some criminals who were robbing an ATM in "Permanent Retirement", Ben's voice remained the same though sounding more computerized. This is due to Galvanic Mechomorphs being unable to bond with living organisms; thus, Ben's transformation into Upgrade is incomplete. But this fact can be bent as seen in the crossover special "Ben 10/Generator Rex: Heroes United", where Upgrade merged with Rex Salazar's Nanites to greatly enhance his ally's Nanite-based machines during their fight with Alpha-Omega. Compared to his look from the original series, Upgrade's appearance in "Ben 10: Ultimate Alien" had him with a black and green color scheme; he still has the green stripes on the black side, but now has black stripes in the green side.

Ben's nickname Upgrade also resulted in him creating a catchphrase for the form: What do you do when your best just isn't good enough? Answer: You get an upgrade.

In Omniverse Upgrade's design is the same as it was from Ultimate Alien, except his Omnitrix is now his eye. He made his Omniverse debut in "Otto Motives" so he could upgrade Kevin's car to fight Otto.


Voiced by:

Techno-Bubble is an alternate counterpart of Upgrade. Techno-Bubble looks identical to 11 year old Upgrade only with blue replacing the green on the circuit pattern and soft blue replacing the white parts. His Omnitrix has a gold rim and a blue faceplate and is located on his chest.


Voiced by:

Ghostfreak is an Ectonurite from the planet Anur Phaetos in the Anur system. Horrific creatures with a single eye on an upturned skull, long, sharp claws, a striped ghost-like tail, and internal tentacles, Ectonurites normally wear a protective skin that condenses their form to resemble ghosts, their single eye moving along a black track on that skin. Ectonurites are able to phase through matter, possess people, turn invisible and fly. They are stronger in darkness and can be weakened in sunlight to the point of death by combustion if not wearing their second skin. As an Ectonurite's consciousness exists in even the smallest strand of their DNA, Ghostfreak is essentially Zs'Skayr, an evil Ectonurite who managed to have his genetic template added into the Codon Stream. Due to the Anur system being closed off from the rest of the universe, Azmuth was unable to scan the DNA of another Ectonurite into the Codon Stream.

Ben first transformed into Ghostfreak to sneak out of his great aunt's house in "Permanent Retirement", admitting a sense of dread when he later uses Ghostfreak to defeat Zombozo. This would later be revealed to be the result of Zs'Skayr's consciousness influencing Ben whenever he becomes Ghostfreak. Eventually, the Zs'Skayr persona becomes strong enough to force his way out of the Omnitrix in the events of "Ghostfreaked Out", causing Ben to lose the ability to become Ghostfreak until the events of "Be Afraid of the Dark" when Zs'Skayr escaped death by allowing himself to be scanned by the Omnitrix. Though the Ectonurite DNA was removed from the Codon Stream by Azmuth, Ben ends up using the Omnitrix to absorb Zs'Skayr during his attack on Vilgaxia. Since then, as shown in "The Ultimate Sacrifice" when Ben attempted to use Ghostfreak on Ultimate Humungosaur, the Zs'Skayr persona has stayed inactive. In "Ben 10: Ultimate Alien", Ghostfreak's second skin looks notably different from the original series, having white skin, a bigger eye, and the Ultimatrix moved to his chest from his left chest. In "Ben 10: Omniverse" he resembles his Original Series appearance, but now has chains on his neck, wrists, shoulders, and tail. There are chain links leading from the chains on his neck and tail to the Omnitrix on his chest. He is also much skinnier than he was before and does not seem to have the Zs'Skayr personality anymore. Ghostfreak reappeared in "Mystery, Incorporeal". After every fight with Charmcaster's rock monsters, Ghostfreak would appear as the only selection on the Omnitrix. Eventually, Ben gave in and transformed into Ghostfreak to fight Michael Morningstar.


Voiced by:

The secondary antagonist, he was dubbed Ghostfreak by Ben since he is the human's Ectonurite form yet is actually a clone of the form's donor Zs'Skayr (a play on "The Scare"). Originally High Ectonurite, Zs'Skayr learned about the Omnitrix from reading one of Vilgax's data, tricking Myaxx into allowing him to accompany her in acquiring a sample of Florauna DNA. However, possessing the donor, Zs'Skayr manages to have his DNA scanned with the Florauna's for the Omnitrix. While the original Zs'Skayr died sometime between then and the original series, he lived through the genetic clone manifested within the Omnitrix. Ghostfreak's original appearance was similar to that of a ghost with a black track along his skin but after freeing himself, he tore off the protective second skin to reveal Zs'Skayr's true form. He has the power to phase through matter and possess other life forms. He can also become far stronger if he's in complete darkness, which allows him to become even scarier in appearance and fire a powerful energy beam from his chest. However, without the second skin protecting him, sunlight can cause him to combust and die.

Only able to influence Ben originally as Ghostfreak when the boy first used the form before regaining his strength, Zs'Skayr finally managed to force his way out of the Omnitrix in the episode "Ghostfreaked Out". After peeling off the protective layer of skin that normally covered him, he tried to take over Ben's body in order to become whole again. After a failed attempt to possess Ben, he coerced the Circus Freak Trio to help him by taking over Thumbskull and tossing him about the room in a show of force, he was destroyed when he was exposed to sunlight by Ben. However, during the events of "The Return" and "Be Afraid of the Dark", Zs'Skayr is brought back by Viktor and their group of Anur Transylians to enact a master plan to plunge the Earth into darkness so Zs'Skayr can exist in eternal darkness with the Omnitrix as a bonus. But Zs'Skayr is once again defeated by Ben when exposed to sunlight while in space, though he managed to get some of his DNA scanned into Ben's Omnitrix at the last second. As revealed in the Omniverse episode "From Hedorium to Eternity", Zs'Skayr is revealed to have survived and attempted to repeat his scheme to plunge Earth in darkness with the aid of his Ectonurite kin before being sucked into the portal he built.

Zs'Skayr turns up alive in the Ben 10: Alien Force episode "Ghost Town". After being removed from the Codon Stream, Zs'Skayr had apparently been imprisoned by the Galvans; Vilgax frees him on the condition that he tell him the secrets of the Omnitrix and the knowledge to defeat Ben, but Zs'Skayr betrays him and takes over Vilgax's home planet of Vilgaxia, possessing the citizens and turning them into his minions that resemble his sun shielded form. Vilgax then enlists the help of Ben to try to take Vilgaxia back. During the battle, Ben lets Zs'Skayr enter his body, returning the Ectonurite DNA to the Codon Stream, Ben transforms into Ghostfreak but he takes control of him in the same way he turns the Chimera Sui Generis citizens and soon he tries to possess Vilgax, but is defeated by Vilgax and Ben changes back, with Ghostfreak still inside the Omnitrix until the Zs'Skayr persona ended up in Ledgerdomain.

However, in the ending scene of "Mystery Incorporeal", Zs'Skayr emerges from the portal to Ledgerdomain that Darkstar had opened earlier. Weakened, Zs'Skayr resolves to use the Plumbers to ensure his return to Anur Transyl while removing King Xarion from Doctor Viktor's body. ZsSkayr also formed an alliance with Crujo and Kuphulu. Once back on Anur Transyl, formally introducing himself to Ben by his true nature, Zs'Skayr regains his full strength while readjusting his skull to assume a grim reaper-like appearance and revealing his goal to regain his former title by using the energies of the Alpha Rune he stole from Charmcaster to revive the Valdactylian race starting with Lord Transyl and use their power to rule the universe. However, Zs'Skayr is defeated by Ben using his Atomix form to create an energy sphere that vaporizes him with Ben keeping the item in Zs'Skayr's castle to discourage any chance of revival. In flashback episode From Hedorium to Eternity He returns a year after his defeat in the space and comes to town of Bellwood where built a portal that allows him to bring the ectonurite of Anur phaetos to Earth to start their invasion but is defeated by Ben and returned to his planet along with his people.


Voiced by:

  • Fred Tatasciore - Ben 10
  • Vanessa Marshall - Ben 10 (As Gwen in Ben's body in "A Change of Face")
  • Dee Bradley Baker - Ben 10: Alien Force, Ben 10: Ultimate Alien
  • David Kaye - Ben 10: Ultimate Alien (As the 16-year-old Ben in "Ben 10: Omniverse vs Ben 10: Ultimate Alien"), Ben 10: Omniverse
  • Ashley Johnson - Ben 10: Omniverse (As Gwen in "And Then There Was Ben")

Cannonbolt is an Arburian Pelarota from the planet Arburia, which was destroyed by "The Great One" one week prior to the events of "The Big Tick". After this, the Arburian Pelarotas moved to Vulpin (Wildmutt's planet), then they mutated due to the pollution, evolving to be able to live there and becoming a sub-species, called Vulpinic Tortugans. Cannonbolt is the first new alien to appear on the Omnitrix, and eventually replaces Ghostfreak in the original series opening. He was originally meant to be one of the original ten aliens, but was replaced by Diamondhead in production.

Cannonbolt is a hulking, broad-shouldered alien covered in natural armor plating, and by curling up into a ball, much like an armadillo or pillbug, he can encase himself in his armor, becoming virtually invulnerable; also, in his balled-up form, he can roll across terrain at high speeds. The drawback is that Cannonbolt quickly picks up momentum, which can make hitting more agile targets difficult, as he cannot slow down quickly; in addition, Cannonbolt's speed and maneuverability is limited outside of his ball form, owing to his bulk and high center of gravity. The first time Ben used Cannonbolt was in "The Big Tick", but it was an accidental transformation, Ben intended to turn into XLR8 to go to a fast-food restaurant; the first intentional transformation was made in the same episode to try to stop "The Great One" for destroying Earth.

In Alien Force, Cannonbolt's armor is more curved, the stripe on his torso is gone, his eyes are now green, and the Omnitrix is on his chest.

In Omniverse, Cannonbolt looks like a mix between his Alien Force/Ultimate Alien and Original Series looks, but is shorter. 11-year-old Ben has Cannonbolt's Omnitrix on his forehead like in the original series. In the original series, Cannonbolt was a hulking, broad shouldered alien with natural yellow armor plating on his back shoulders and the backs of his arms. Cannonbolt is one of the most popular aliens during the Ben 10 series.

Ultimate CannonboltEdit

Voiced by:

As Ultimate Cannonbolt, his body is light metallic cyan with a darker shade of gray on his now-metallic armor, armor which has cylindrical studs that turn into spikes when he goes into his ball form. In this state, he offers increased defensive and offensive capabilities. He also has increased speed, momentum and can bounce even higher. Ben first used Ultimate Cannonbolt in "Too Hot to Handle" to hold Kevin and P'endoris, allowing Kevin to seal P'andor back into his suit.

Sentient Ultimate CannonboltEdit

Voiced by:

The Sentient Ultimate Cannonbolt looks just like Ultimate Cannonbolt, except he has red eyes and lacks the evolved Ultimatrix symbol on his chest.


Voiced by:

Rollway is an alternate counterpart of Cannonbolt. Rollaway is quite similar to Cannonbolt, except that his color scheme is more like Ultimate Cannonbolt's, and his Omnitrix symbol and eyes are blue instead of green. His eyes are more to the horizontal side rather than diagonal. The Omnitrix symbol has a gold outer casing.


Voiced by:

Wildvine a Florauna from the planet Flors Verdance. Florauna are plant-based aliens with tentacle like roots for legs, and carnivorous plant-shaped flaps covering their heads. Among a Florauna's abilities are extending limbs, thorns, explosive seeds, merging with other plants and understanding other plant-based beings, and regeneration from near fatal attacks. However, like any plant, a Florauna requires sunlight and water to survive. But in Ben's case, first using the form by accident in "Camp Fear" to face the Mycelium, he seems to not require sunlight and water.

Wildvine returns in Ben 10: Omniverse, during a training session with Rook. His 16-year-old version looks exactly the same with the exception of having four plant legs and the omnitrix symbol being on a belt. 11 year old looks like OS Wildvine. Wildvine has vine like legs, four long fingers on his hands, and flytrap shaped flaps covering his head.

Stink ArmsEdit

Voiced by:

Stink Arms is the fusion combination of Four Arms and Stinkfly' DNA. Stink Arms mostly resembled Four Arms with a few Stinkfly characteristics. Four Arms' eyes were replaced by Stinkfly' eye stalks. He also had Stinkfly' tail and wings. Stink Arms wore a shirt based on Stinkfly' suit and Four Arms' pants. Stink Arms wears the Omnitrix symbol on his face.

Diamond MatterEdit

Voiced by:

Diamond Matter is the fusion combination of Diamondhead and Grey Matter's DNA. Diamond Matter is slightly bigger than Grey Matter. Diamond Matter had Diamondhead's crystalline skin. He also had Diamondhead's spikes on his back and the back of his head. Diamond Matter had Grey Matter's eyes and mouth. Diamond Matter wore a uniform that was white with black cuffs on the left and black with white cuffs on the right. Diamond Matter wore the Omnitrix symbol on his chest.

Heat JawsEdit

Voiced by:

Heat Jaws is the fusion combination of Heatblast and Ripjaws' DNA. Heat Jaws has Ripjaws' torso, head and tail flap, but has Heatblast's arms and legs. Also, Ripjaws' dorsal fin is replaced by flames.


Voiced by:

Spitter is the Omnitrix's DNA sample of a Spheroid from the planet Scalpasc.Spitter is a green, bulbous alien. He resembles a puffer fish. He has 3 spikes sticking out the top and bottom of his head. His mouth covers mostly the upper front of him, which is filled with dull colored, pointed teeth. His eyes are connected to the corners of his lips.He has black pants that partly covers his stomach and has the Omnitrix symbol on the black pants.

Spitter can spit out a concentrated blast of slime. This slime is very slippery, and can be made acidic. It has also been shown to be highly conductive. When he spits, Spitter inflates into a ball-like shape. Spitter has sharp teeth. Spitter seems to have enhanced strength, as shown in Ben 10,000 when he held Dr. Animo who had the body of a yeti at that time. Scalpasc's atmosphere is toxic but Spitter can survive on Scalpasc because he has no nostrils.


Voiced by:

Buzzshock is a Nosedeenian, from the Nosedeen Quasar (a play on Noseden and Quasar). Commonly referred to as Megawhatts (A play on megawatt and "what"), Noseddenians are battery-like energy beings that manipulate electricity, transmit themselves through any electrical source in a high speed and reproduce via Mitosis once amassing enough energy.

Although Ben has not revealed these powers himself, he does reveal that he has the ability to send green electrical shocks, unlike the regular Megawhatts, which shoot yellow; he is also slightly different from them, which are yellow while Buzzshock has green eyes and a white lightning stripe on his chest. Buzzshock was first used by Ben 10,000 in his fight with Doctor Animo.

In Omniverse, Buzzshock looks like the Megawhatts in Omniverse, now having bolts on his hands, the green lightning stripe, and the top of his forehead has turned to green, and the Omnitrix is on his head. Buzzshock was used to save the Megawhatts from being absorbed by Phil, and to send him into the Null Void by powering up the Null Void Projector.


Voiced by:

Nosedeenians, commonly known as Megawhatts, are mischievous little creatures composed of electrical energy who have the physical form of anthropomorphic batteries. They come from the Nosedeen Quasar. Nosedeenians are black and yellow, white or (in the case of Ben's transformation) green, with plus and minus symbols on their back (+ and -), similar to a battery, and they have a lightning bolt-shaped marking on their chest. They stand roughly a foot tall, have pointy legs, and have three fingers on each hand.


Voiced by:

Arctiguana is a Polar Manzardill from the planet X'Nelli. Arcticguana's appearance somewhat resembles an iguana.

Similar to Big Chill, Arctiguana is capable of firing a long-range freeze ray that isolates targets in ice on contact, cold enough to freeze molten lava. The ray can create an icy path that he can skate across in a snowboard-like fashion. Arctiguana can survive in any sub-freezing temperatures. Arctiguana also has the ability to breathe underwater. Arcticguana has enhanced strength, as shown in "Store 23" when he tackled Tetrax and landed on a car, the roof was dented. As shown in "For a Few Brains More", Arctiguana can use his breath as a means of quickly hovering himself (along with anyone holding on to him) across the ground. If Arctiguana uses his ice breath too much, he'll need to catch up his breath before using it to freeze things again. In Ultimate Alien, Arcticguana had three dorsal fins reaching down his back and gills on the sides of his head. He also had small spikes around his face. Arctiguana wore white pants and a black open-front shirt. He wore the Ultimatrix symbol on his chest.

In Omniverse, Arctiguana has clothing which covers most of his body. His chest is covered by a white shell. He has four pointed fins instead of three. The clothing goes all the way up to his head and his pants are fully black. The black stripes on his face do not go through his mouth anymore, instead going around his mouth. The spikes on his face are now on his chin. His gills are no longer visible. The Omnitrix symbol is on his chest. When 11-year old Ben was in 16-year old Ben's body, his voice was slightly higher.

11-year-old Arctiguana has sleeves with white cuffs and his leg is white and ending in black when it reaches his foot. His chest is not covered, so his gills are visible. His eyes are connected by the black stripe. The spikes are still on his face. The Omnitrix symbol is on his left wrist.

Ultimate Arctiguana is capable of firing a long-range freeze ray that isolates targets in ice on contact. Ultimate Arctiguana can shoot large columns of ices from his cannons, and propel himself across the ground with their force.


Voiced by:

Freezelizard is an alternate counterpart of Arcticguana. Freezelizard wears a sleeved covering with white leg endings. He has blue eyes. The Omnitrix symbol is blue with a gold outer casing, and is located on his left wrist.


Voiced by:

Benwolf in the first three series or Blitzwolfer in Ben 10: Omniverse, is a Loboan from Anur Transyl's moon Luna Lobo. Besides superhuman strength and agility, Blitzwolfer can peel back his lupine snout to send out a sonic howl. Besides the color-blindess, Blitzwolfer finds it hard to resist his predatory instincts. Blitzwolfer is said to be affected by many other normal attacks and could be blinded by ultraviolet light, although there is no evidence showing this in the episode.

Ben first became Blitzwolfer, (called Benwolf at the time), when a Loboan assumed to be a "Yenaldooshi" scratched the Omnitrix in the episode "Benwolf", causing its DNA to be added into Ben's selection of aliens. The result of Ben's battle leaves the Omnitrix halfway between "Scan Mode" and "Active Mode"; causing him to transform within several hours instead of instantly as he normally does. In Ultimate Alien he wears the same clothing, he wears the Ultimatrix on his chest and the inside of his mouth is red and white. Blitzwolfer later makes his return in the Omniverse episode "An American Benwolf in London", his name conned at the time, now in a green and black suit with matching collar and wristbands and a white belt. He then turns into him again briefly in Omiverse episode "Catfight" to attack Nacey Chain.


Yenaldooshi is a Loboan who was mistaken by Navajo Indians to be the Yenaldooshi, a werewolf-like creature from their folklore, it was sent by Dr. Viktor to steal communication equipment from the Navajo Indian reservation that Ben, Gwen, and Max were visiting in "Benwolf". The initial confrontation resulted with Ben gaining Blitzwolfer as a result of the Loboan providing its genetic code by accident, though Omnitrix was trapped between modes with the gradual change making it seem the Loboan was an actual yenaldooshi. Later, the Loboan appears to be killed by a cave-in, but actually survived as it completes its mission. In "Be Afraid of the Dark", it was revealed that the machine was part of Zs'Skayr's plan to cover the Earth in Corrodium radiation. When the Corrodium projector on the space station was destroyed, Yenaldooshi was presumably killed.


Voiced by:

Benmummy in the first three series or Snare-oh in Ben 10: Omniverse, is a Thep Khufan scanned from an unnamed Thep Khufan in "Under Wraps"; from the desert planet Anur Khufos in the Anur system. Thep Khufans are Mummy-like creatures made up of many bandages that function like tentacles and can regenerate from any injury with an apparent immunity to corrodium. However, the downside is that a Thep Khufan is prone to getting wet or burned .

Snare-oh was seen only two times in the original series; Ben debuts him in "The Return" as an accidental transformation while fighting off the Yenaldooshi and getting used to his form's abilities. Ben quickly discovers how to stretch his bandages, but has not displayed knowledge of the advanced reshaping techniques yet. He was seen again in the non-canon episode "Ken 10", where Ben 10,000 helps his son Ken when he got stuck trying to escape from his room.

In Ultimate Alien Snare-Oh looks the same but is much taller and now wears the Ultimatrix on his chest and the green lines on his body are now gold. In Ben 10: Omniverse, Snare-oh is redesigned to have a new black head-dress with a golden crown; a collar/wrap-like garment over his shoulders and neck, and his Omnitrix symbol is on the waist of his tunic. He briefly debuted in "The Frogs Of War" two-part episode, while the Omnitrix was in Randomizer Mode. Snare-oh's eyes and the gaps between his bandages glow green.

The MummyEdit

The Mummy is a Thep Khufan from the planet Anur Khufos, the genetic donor of Snare-oh. The Mummy was sent by Dr. Viktor to find a dangerous mutative element called Corrodium that crashed on Earth millions of years ago. During the alien's battle with Ben, the Mummy's DNA was scanned by the Omntrix before it was frozen solid by a liquid nitrogen device and buried under concrete with the Corridium. However, the Mummy is freed by the Yenaldooshi and completes his mission of giving Viktor a power source for his machine. In the end, the Mummy gets inadvertently sent into the Null Void alongside Viktor through an ill-timed use of his teleportation device. Its current fate is unknown.


Voiced by:

Benvicktor in the first three series or Frankenstrike in Ben 10: Omniverse, is a Transylian from the planet Anur Transyl in the Anur system. Transylians are based on the Frankenstein Monster, resembling patch-work humanoids with machine parts on their bodies while possessing super-strength, agility and durability. They also can generate electricity and blast it at others, adhere to metal surfaces through electromagnetism and survive in the vacuum of space.

Frankenstrike, like Snare-oh and Blitzwolfer, looks slightly different from Dr. Viktor, with longer hair and a smaller left eye; also as the others, has green eyes instead of purple, and releases green electricity. Ben first became Frankenstrike after the Omnitrix scanned Dr. Viktor during his fight with him, Zs'skayr, and their Thep Khufan ally in "Be Afraid of the Dark". In the Omniverse series, Frankenstrike reappears in "Max's Monster". Frankenstrike has an appearance similar to the classic depiction of Victor Frankenstein's monster, appearing more patched-together.

Lightning VoltEdit

Voiced by:

Lightning Volt is an alternate counterpart of Frankenstrike. His appearance is based on 11-year-old Frankenstrike. His skin is one-toned rather than two, he has gold transformers on his back with light blue coils and bright blue bulbs. His gauntlets are gold, the set of stripes on his pants (specifically, his thighs and calves) are gold with the rest of them being black with a blue highlights. His boots are gold with three bright blue lines. He has bolts on his elbows, shoulders, neck, and chest. He has long black hair and sideburns. He has a scar on his left upper arm, right shoulder, and above his left eye. The Omnitrix is located on the light blue stripe of his belt.


Voiced by:

  • Michael Dorn - Ben 10, Ben 10: Ultimate Alien, Ben 10: Omniverse

Viktor is a Transylian from Anur Transyl (an alien resembling Frankenstein's monster) and also Frankenstrike's genetic donor. As Zs'Skayr's second in command, Viktor used his powers on a teleportation machine to send his comrades to their positions. When at NASA, he posed as a human to get a job at NASA to obtain the means to hijack a space shuttle while reviving his master to achieve their ultimate plan was to prevent the sun's light from reaching the earth using satellites. During the resulting battle, Ben accidentally had the Omitrix scan Viktor's DNA before he essentially defeats himself when an attempt to teleport Ben to an unspecified location, ended up with him and the Mummy getting tossed into the portal he created.

Viktor returns in Ben 10: Ultimate Alien, redesigned with two red eyes and a metal plate on his head, with lightning that is no longer purple but blue. Viktor was among Kevin's victims during the events of "Absolute Power", and then, Viktor was tossed into the Null Void. Between then and his return in "Viktor: The Spoils", Viktor ended up encased in ice and brain dead by the time he somehow ended up in the war-torn country of Zarkovia. However, originally intended as a weapon by his son Prince Gyula in order to dispose him, King Xarion transferred his mind into Viktor using a special contraption and Ben when he was passed out as AmpFibian. With Xarion's mind inside his body, the alien renamed himself King Viktor and nearly decimates the rebels before Ben's group encase him in a molten tank, vowing revenge on them for taking his birthright from him.

However, during the events of the Ben 10: Omniverse, his mind is restored by Zs'Skayr after he metaphysically destroyed King Xarion, Viktor is freed when he is brought to Anur Transyl during the events of "Rad Monster Party". In the events of "Charmed, I'm Sured" and "The Vampire Strikes Back," Viktor helps Zs'Skayr drain all the energy of the Alpha Rune in what he saw to be madness in reviving Lord Transyl. When he learns that Zs'Skayr intends to revive the entire Vladat race, whose treated his kind as slaves during their reign, Viktor changes sides to help Ben destroy the clones while capturing the weakened Lord Transyl to contain him. Viktor later places Lord Transyl's prison pod in Anur Transyl where it currently faces the direction of Anur Transyl's sun.


Voiced by:

Upchuck is a Gourmand (from gourmand) from the planet Peptos XI. Divided into the dark-green-colored Merks and the light-green-colored Perks, Gourmands are small frog-like aliens with a very large appetite, their four strong and adhesive tongues stretching out to latch onto large objects and swallow whole. As Gourmand's mouths and various acid-filled stomachs stretch to facilitate the digestion, the latter converting the ingested matter into explosive balls of liquids that can be expelled at will with great accuracy. As a defense, having done so with their ten previous home worlds, Gourmands can devour their planet as a last resort when invaded and depart for a new planet to call home.

Upchuck was unlocked for Ben's use by Xylene, to destroy Vilgax's drone in "The Visitor". He was also used to eat the sub energy and defeat the forever king. He also made an appearance in "The Secret of the Omnitrix" as a failed attempt to fight Miax who he at the time thought to be Vilgax. As Upchuck, it seems that Ben cannot easily digest human food due to their acids being unstable for a Gourmand to digest. In Omniverse, Upchuck's 11 year-old appearance remains the same but his eyes and symbol have changed from white to green. His 16-year-old appearance remains the same as his Alien Force and Ultimate Alien appearance as well yet can assume a Perk-type form. Perk Upchuck has green skin, six sprout like growths on the back of his head, a dark green patch of skin on his head, light green skin on his face and belly and crooked teeth.

Vomit ManEdit

Voiced by:

Vomit Man is an alternate counterpart of Upchuck. Perk Vomit Man looks identical to his 11 year old dimensional counterpart, however, he has different colorations. His skin is more bluish, the white parts on his outfit are light blue and the black parts have dark blue highlights.

Gourmand ActorEdit

Voiced by:

Gourman Actor looks like a typical Murk Gourmand, except he has greenish blue eyes, rather than the typical yellow.


Voiced by:

  • Rob Paulsen - Ben 10, Ben 10: Ultimate Alien, Ben 10: Omniverse

Ditto is a Splixson from the Earth-like planet Hathor.

Ditto is a very cute and adorable humanoid child alien with the ability to clone himself limitlessly, but each clone operates independently, regardless of whether or not Ben wants them to, and is indistinguishable from the others, and somehow, he can breathe underwater. Though the clones are autonomous, they share a link with each other, with the pain of one being shared with all of the others, and the death of one clone will cause the death of the rest, which negates the usefulness of making large numbers of clones, explaining the reasons why Ben rarely creates many clones of Ditto in the limited times he has appeared. His child-size is also neither stronger nor faster than his size and build suggests. Ben activated Ditto accidentally in the episode "Divided We Stand", to fight against Dr. Animo's mutated seagull; his first intentional Ditto transformation was in the same episode to go goofing around on the beach.

In Omniverse, 11 year-old Ditto's head fins are white and the ones on the side are connected to his eyes. He also has two small spikes protruding from his cheeks. His fingers are now sharper and the green orbs on his shoulders are gone. He has bumps like the three on his waist on his shoulders and wrists. His neck is completely black. Ditto is about the height of an average human child. 16-year-old Ditto looks similar to his 11-year-old self. He has green fins now. His suit where it used to be black is now green, and he has green under his arms, on his shins, and around his waist. in the Episode A Fistful of Brains it is shown that the death of one clone will cause the death of the rest is no longer true because Khyber's new pet kill`s all but the original Ditto; it was likely a glitch in the prototypes.

Eye GuyEdit

Voiced by:

Eye Guy is an Opticoid from the planet Sightra.

Eye Guy is the first alien to have been unlocked off-screen, how he was obtained is never addressed. As his name says, Eye Guy's upper-body is covered in eyes, though he ironically has no eyes on his head, which consists of a mouth and a very large pair of bat-like ears. From these eyes, Eye Guy can fire numerous energy beams such as, ice beams, fire beams, and laser beams; the eyes can be merged to create different effects, like a freezing beam; and by merging every eye into the large eye, he can fire a stronger energy blast.

His only appearance in the original series itself was in "Ben 10 vs. the Negative 10: Part 2", where Ben was attempting to prevent the Negative 10 from stealing the Sub-Energy. He also was introduced in the first alternate opening of "Ben 10: Secret of the Omnitrix" version, in a fight with Doctor Animo.

In Omniverse, 11 year old Eye Guy is the same as 16-year-old Eye Guy who looks almost the same as the original series, with his central eye returning, but now the white circles on his pants have been replaced with green stripes and his belt is now green with a white stripe. He wears green cuffs and has less eyes covering his body although they are bigger. He has also gained eyes on his hands. He has a green belt where the Omnitrix symbol is located.

Aliens introduced in Ben 10: Secret Of The OmnitrixEdit

Way BigEdit

Voiced by:

Way Big a To'kustar, created by unpredictable cosmic storms. He is 200 feet tall with the ability to move at fast speeds and create a cosmic storm and has invulnerability, a To'kustar's only weak point is his fin, which momentarily paralyzes him when struck.

Gaining the ability to become Way Big in "Ben 10: Secret of the Omnitrix", after Azmuth decides to deactivate the "Self-destruct mode" of the Omnitrix, Ben uses his form's size to his advantage. In Ben 10: Alien Force the spikes on his hips and shoulders are gone and has green eyes. Way Big has great strength as shown in Ben 10: Ultimate Alien episode "The Ultimate Sacrifice" when he easily defeated all 6 ultimates. He also has great strength on objects his size such as in "Primus" where he threw Vilgax into orbit, despite him being his own size. Also in "The Widening Gyre" he threw the garbage monster into the sun, despite it being relatively bigger.

In "Ben 10: Omniverse," Way Big has his new design similar to his original. He also now speaks in a distorted voice with a Japanese accent. He was temporarily erased from the Omnitrix as a result of Eon's time ray.

Ultimate Way BigEdit

Voiced by:

Ultimate Way Big is 600 feet tall (3 times taller than Way Big), stronger, has a spike sticking up from both his cheeks and his body is blue, red, and white. His head looks similar to Alien X or Ditto. He was used only once to battle in the episode "The Ultimate Enemy, Part 2". He can launch cosmic discs from his hands. This is also the last Ultimate form Ben used. He has increased strength, durability and has the power of flight. However, his giant size prevents him from fighting in small spaces and he can be harmed by Diagon's magic acid rain. Ultimate Way Big can also shoot lasers at the opponent like the regular form.


Voiced by:

Giant-Manster is an alternate counterpart of Way Big.


Voiced by:

Azmuth is a thousand year old Galvan (Grey Matter's species), as well the genius who created the Omnitrix, part of the Ultimatrix, the "Unitrix", "Ascalon", and the first Galvanic Mechomorphs. Azmuth is an extremely intelligent being, even as far as Galvan go, Azmuth's scientific prowess and achievements have made him a respected scientist even to the other Galvans, Paradox has even called him the smartest being in the universe.

A thousand years ago, Azmuth was in a relationship with a female Galvan named Xenith, who attempted to stir him from harnessing the primal forces of the universe. Though he promised to view things her way, the planetary system they saw in perfect alignment inspired Azmuth to create Ascalon which can tap into the fundamental forces of the universe. Though he shrugged off the consequences of creating such a weapon, losing Xenith's love in the process, Azmuth is horrified to find that Ascalon was stolen by an Incursion who hoped to end the eons-long civil war between the many factions on his homeworld. The result however, was the destruction of the Incursion homeworld. Shocked by what he had done, Azmuth vowed to hide away the sword and gave it to Sir George, who used the weapon to defeat Dagon with the weapon sealed along with the entity's heart.

Soon after, Azmuth dedicated himself to peaceful sciences, one of which was the creation of the Omnitrix as an apology to both the galaxy and Xenith, to be a tool of peace in an act of repentance following the destruction wrought by his previous creation. It has a twofold purpose: it would promote inter-species understanding by allowing other beings to experience different ways of life, and it would also serve as a repository for the DNA of millions of species, preserving them in the event that any of them should ever become extinct. However, he was disgusted when some people, particularly Vilgax, considered it as a weapon. This causes Azmuth to go into hiding before being found by Ben who needed his help to deactivate the Omnitrix's self-destruct sequence, convincing him there is still hope for the universe as he enable Ben to access Way Big and returned to Galvan Prime. Since then, Azmuth became more optimistic as he attempted to make up for lost time such as attempting to aid Malware as shown during the events of "Trouble Helix".

In Ben 10: Alien Force, Azmuth's former assistant Albedo creates a copy of the Omnitrix. After the copy nearly destroyed a galaxy, Azmuth shows up and punishes Albedo by breaking his Omnitrix, leaving him de-powered and trapped in Ben's human form, before sending him to prison. He then stated that Ben is the only one who used the Omnitrix for good, and decides to let him find his own way to use it rather than advise him, saying that he has far more difficult challenges ahead and that he isn't the only one who believes Ben is the only one who thinks so. Later, Azmuth and Paradox warn Ben that the Highbreed are conquering planets and their fleet is heading towards Earth. And Galvan Prime was already conquered by then and its destruction would be the beginning of the end. Although he doesn't want Ben to fight, he realizes that there's no stopping him and activates the Master Control for the sake of the battle. When the Master Control was reset by the DNA wave Ben used to stop the Highbreed, Azmuth left to help rebuild Galvan without reactivating it. He shows a no-nonsense attitude towards the High-Breed's plan to eradicate Earth and he warmly tells Ben that there are more difficult battles to be fought in the future.

Following the defeat of Dagon, Azmuth removes the Ultimatrix and places a new Omnitrix on Ben. When asked by Ben if he is ready to learn the Master Code, Azmuth states that he'll consider this by Ben's 18th birthday. He deactivated the Ultimatrix after giving to Ben, and gave him a newly modified Omnitrix. During Ben 10: Omniverse it was revealed that Azmuth was responsible for the accidental creation of the Galvanic Mechamorphs, including the corrupt one he dubbed Malware. He made efforts to repair Malware but failed, and Malware's impatience turned to hatred for his creator. This would lead to him forming an alliance of villains in an effort to eliminate Azmuth, who would also have to contend with his old assistant Albedo.

Aliens introduced in Ben 10: Race Against TimeEdit


Voiced by:

Eon looks like the regular Eon, except he lacks the helmet.

Aliens introduced in Ben 10: Destroy All AliensEdit


Voiced by:

  • Yuri Lowenthal - Ben 10: Destroy All Aliens, Ben 10: Ultimate Alien, Ben 10: Omniverse

Feedback is a Conductoid (a play on conduct) from the planet Teslavorr (tesla- is from Nikola Tesla, a physicist who was renowned in his works in electric manipulation; and vorr is a play on vore, a Latin meaning for "to devour").

He is a humanoid alien that speaks with electrical tone of voice; he has one green eye on his head, his body is similar in appearance to the xenomorph from the Alien franchise, he has a black and white color scheme, he has plugs on the tip of his fingers, tail and on his two antennae which also makes him look like a jester. He can use these plugs to absorb and redirect most kinds of energy by direct contact or from a distance; and he also uses the electricity to grind on electric lines and fly by using it as propulsion.

Feedback was Ben's most favorite alien when he was 11 years old, using him even when he wasn't right for the situation and he became addicted to him. But due to Ben's overuse of the form, as revealed in the flashback events of "Showdown", Feedback was destroyed by Malware, and was removed from the Codon Stream of the Omnitrix. As a result of the event, the Omnitrix never accepts any new Conductoid DNA. However, in the final battle with Malware in the episode "Showdown: Part 2", Ben regained the ability to become Feedback once again.[note 1] This version looks similar to the younger version, but has a black and green color scheme, and is more muscular with golden bolts on his shoulders, arms, and hips. In the final episode of Ben 10: Omniverse, A New Dawn, Feedback is the last alien to ever be used by Ben, whom he used to defeat Maltruant, a rogue Chronosapien, by sending him into an infinite loop of defeat.


Voiced by:

Plug-Man is an alternate counterpart of Feedback. Feedback's shape is the same as 11 year old Ben's Feedback, but his colors are unknown. Ben 23 had originally named Feedback as "Plug-Man", but later changed it due to liking the name "Feedback" better.

Aliens introduced in Ben 10: Alien ForceEdit


Voiced by:

Swampfire is a Methanosian from the planet Methanos (referring to methane), a living plant alien with superhuman strength and ability to create fire from the methane produced by his body. Besides being able to control plant life and producing seeds that quickly grow into vines, Swampfire also has a vast regenerative ability that allows him alter his own body. This expresses itself in such ways as tunnelling underground in vine form, growing his feet to root himself into the ground, healing his lost limbs or producing other ones; this ability makes him almost indestructible. However, Swampfire is more vulnerable than Heatblast because he can be frozen for periods of time, unlike Heatblast, who is completely invulnerable to cold. He may look like a walking compost heap but he is one of the most powerful ones.

He appeared in pilot episode of Ben 10 Alien Force, in "Ben 10 Returns: Part 1" after the Omnitrix had recalibrated, to fight the DNAliens, Forever Knights and defeat Kevin.

In Ben 10: Omniverse, his design is changed and has five fingers on his hands. Swampfire's skin is now olive green, and his arms are larger. The red petals on his shoulder, along with the green thorns on his body, are thinner and longer. His torso design has changed, splitting the black parts on his waist into two. The Omnitrix symbol has also moved from his chest to his stomach. Swampfire underwent a transformative phase during the events of "Charmed, I'm Sure".

Ultimate SwampfireEdit

Voiced by:

As Ultimate Swampfire, he is a tree-like version of himself with a Heatblast-like face and blue gooey shells containing an organic, blue-colored napalm kerosene gel-like solution, containing a highly flammable substance that is used to create blue flames, which are more powerful than the normal, and when he puts his hands together, he creates a huge fire blast; he can also shoot fire bombs. Ultimate Swampfire cannot regenerate himself, this limitation was offset by his body being made of petrified wood which is more resistant to damage. Ben used Ultimate Swampfire on the first time in the Ben 10: Alien Force's series finale "The Final Battle: Part 2", to fight Vilgax, and being the first ultimate form used by Ben.

Sentient Ultimate SwampfireEdit

Voiced by:

The Sentient Ultimate Swampfire looks just like Ultimate Swampfire, except he has red eyes and lacks the evolved Ultimatrix symbol on his chest.

Mr. MuckyEdit

Voiced by:

Mr. Mucky is an alternate counterpart of Swampfire. He looks like Swampfire's original Omniverse design but in a blue color scheme. His body is aquamarine in color. The petals on his head and shoulders are aqua. The top of his head, where the tip of the petals is, is grey. The Omnitrix symbol is located on his stomach.


Voiced by:

Swamps wore a fake Ultimatrix symbol while playing Swampfire. Swamps looks similar to pre-puberty Swampfire except that he is larger, has more wrinkles on his body, a pot belly, bigger and messier petals and he lacks an Ultimatrix symbol on his chest.

Echo EchoEdit

Voiced by:

Echo Echo is a Sonorosian (a play on sonic and sonar) from the planet Sonorosia (from the word sonoros in Latin, meaning sound). Sonorosians are living sound waves, and because of such Echo Echo's appearance is a containment suit.

Echo Echo is a small white silicon-based alien whose body is a living amplifier, with headphones connected to square appendage resembling an MP3 player in his back with a port on it decorated with a binary digit situated like the number 10. He can scream at ultrasonic frequencies, capable of overloading machinery and stopping projectiles in mid-flight; he can also use echolocation; and channel vibrations to enhance his power and transmit sound waves through speakers. He used to speak with a very high-pitched and tinny voice, but became slightly lower, he also has the ability to duplicate himself, but unlike Ditto, the clones are not linked in any way and can revert even if all duplicates are not re-integrated, which splinters the original's personality.

The first time he appeared was to fight the Forever Knights' dragon robot in "Ben 10 Returns: Part 2".

In Ben 10: Omniverse, Echo Echo is fatter and shorter, with stubbier legs. On the back of his MP3 player, instead of two plug-like holes, there is now the number ten. The eyes appear puffier as well. His Omnitrix symbol is now on his forehead.

Ultimate Echo EchoEdit

Voiced by:

As Ultimate Echo Echo, he is a blue, taller, with longer arms, and is a more robotic version of himself whose mouth doesn't move when he talks, but can be opened. In this state, Ultimate Echo Echo is unlike his regular form, in that he cannot duplicate himself anymore (As confirmed on the Cosmic Destruction site), but this limitation is well matched with incredible new abilities. He can now shoot sonic screams and sonic waves from discs, which are situated on many parts of his body, that can be thrown and controlled. He also has the power to levitate on air, which makes him one of the most powerful ultimate forms. Ben used Ultimate Echo Echo for the first time to fight the Necrofriggian colonizers, and to help Gwen and Kevin with the traps of the temple in "Map of Infinity". In Omniverse, Albedo takes on a new Ultimate Echo Echo form, which has a dark blue coloring and red disks; he also appears poorly put together.

Sentient Ultimate Echo EchoEdit

Voiced by:

The Sentient Ultimate Echo Echo looks just like Ultimate Echo Echo, except he has red eyes and lacks the evolved Ultimatrix symbol on his chest.

Copy CopyEdit

Voiced by:

Copy Copy is an alternate counterpart of Echo Echo.


Voiced by:

Humungousaur is a Vaxasaurian (vaxa is an Icelandic word which means grow and sauria being a clade of lizards) from the planet Terradino (terra dino means "terrible land" in Latin).

Humungousaur is a 12 feet tall humanoid dinosaur-like alien, and Ben's current favorite alien; he possesses great strength and a thick layer of skin that provides vast resistance to injury; he also has the power to increase his own body size and mass growing up to 60 feet in height. His strength increases as he grows, and his dinosaur features become more pronounced, growing Stegosaurus-like plates on his back, a crest from his forehead, and spikes on his tail; Humungousaur has also proven to be durable enough to survive in space for at least a few minutes.

Ben used him on the first time to fights a swarm of DNAliens and a Highbreed in "Ben 10 Returns: Part 2".

In Ben 10: Omniverse, Humungousaur wears black briefs and a green sash across his chest containing the Omnitrix symbol. He now has a shorter tail. His natural predator is Tyrannopyde.

Ultimate HumungousaurEdit

Voiced by:

As Ultimate Humungousaur, he is a larger ankylosaurus-like creature who is 20 feet tall. Unlike his original form, Ultimate Humungousaur cannot grow at all. He is a green-skinned, armored version of himself with grey horns on his head, arms, chest and back; with a mace in his tail, and his back is covered by a large, spiked shell. His genetic DNA allows him to convert his hands into bio-Gatling guns that shoot kinetically unstable bone fragments as missiles as a result of millions of simulated battles over thousands of years. Ultimate Humungousaur was first used by Albedo in "The Final Battle: Part 1" to fight Ben as Humungousaur, being the first Ultimate Form used in the Ultimatrix. Ben first uses him in the Ben 10: Ultimate Alien episode "Too Hot to Handle" to fight P'andor and his minions (Surgeon, Hammer and Buzz). He is shown to be strong enough to trip Way Big in "The Ultimate Sacrifice". In Omniverse, Albedo's version is now has tan skin instead of green, and appears more like a cyborg.

Sentient Ultimate HumungousaurEdit

Voiced by:

The Sentient Ultimate Humungousaur looks just like Ultimate Humungousaur, except he has red eyes and lacks the evolved Ultimatrix symbol on his chest.


Voiced by:

Dino-Mighty is an alternate counterpart of Humungousaur. He looks the same as his dimensional counterpart, except he has greyish-cyan skin instead of brown, a light greyish-cyan chest, blue eyes, and a blue sash. The waistband of his briefs is soft blue. His Omnitrix is on his sash, which resembles Humungousaur's sash but is blue.


Voiced by:

Hugh Hugh looks just like Humungousaur except that he lacks an Ultimatrix symbol on his chest.

Hugh wears large square-shaped glasses to see properly. Hugh wore a fake Ultimatrix symbol when acting as Humungousaur.


Voiced by:

Suemungousaur is a 17 foot tall Vaxasaurian, who has dark brown stripes all over her body and whose skin is orange-reddish colored. Her eyes are pink and she has black pupils. She has a mole above her lip on the left side of her face. She wears leopard pattern clothes that resemble the stereotypical cavewoman. Her wrists, necklace, and belt are decorated with fangs and various bone pieces. She wears a skull as a helmet that has five plates and four fangs on it.


Voiced by:

Jetray is an Aerophibian (derived from aero for air and amphibian) from the planet Aeropela.

Jetray is a manta ray-like alien who has horns extending from the center of the eyes and two wings which are attached to his arms. He is capable of flying and swimming at supersonic speeds, as fast as XLR8 (or possibly faster), being able to accelerates to speeds greater than light; he can shoot neuroshock blasts through his eyes and tail in the form of lasers or a massive explosion; also he doesn't need to breathe, enabling him to easily travel through water and space. Jetray first appears to chase Alan Albright in "Everybody Talks About the Weather". Ben used him as his mode of transportation, much like Stinkfly when he was younger; however, he elected to use other aliens that were more favorable than Jetray, or simply his own car. Jimmy Jones, the one who exposed Ben's identity to the world, mistook his name as Jeffrey.

Big ChillEdit

Voiced by:

Big Chill is a Necrofriggian (necro- meaning death, and -frigid meaning very cold) from the planet Kylmyys (the Finnish word for coldness). Moth-like in form, folding their wings to resemble hooded robed figures, Necrofriggians can become intangible and freeze an opponent in various ways, one of which utilizes intangibility to freeze anything that they pass through.[note 2]

While possessing superhuman strength and resistance to extreme temperatures, Necrofriggians are unable to use their intangibility against opponents with the same ability. Necrofriggians have an ability to asexually reproduce once every 80 years: building a large nest made of digested metal, where their eggs will hatch, then their offspring feed from metal and will first eat from the nest, before they instinctively will feed on solar plasma until they mature and go to their home.

Ben first became Big Chill in "Kevin's Big Score" to chase down Ultimate Kevin after he stole the Rustbucket II and later to fight Vulkanus. Later, due to the Nercofriggian reproduction cycle, as shown in "Save the Last Dance", Big Chill overtook Ben's personality to carry out the process, but Ben doesn't remember anything he does as Big Chill during this cycle, like he eats metal and had 14 babies.

In Omniverse, Big Chill is larger and barrel chested with bigger wings and the Omnitrix symbol on a green colored waist belt. He looks like a hunchback with his hood on.

Big Chill's natural predator is the Hypnotick.

Ultimate Big ChillEdit

Voiced by:

As Ultimate Big Chill, he is red-skinned version of himself with flame design on his wings, antennae and around his eyes, which causes his face to resemble a mask; and his voice is more gravelly than normal, having a deeper tone behind it. In this state, Ultimate Big Chill can now also create "ice flames", flames that turn into ice, they are flames that consume the heat of whatever they touch, and use that energy to burn, but instead to burn things, it freezes them, much faster than the normal. He was first used in "Hit Em Where They Live", to fight Vulkanus and his Pickaxe Aliens army.

Sentient Ultimate Big ChillEdit

Voiced by:

The Sentient Ultimate Big Chill looks just like Ultimate Big Chill, except he has red eyes and lacks the evolved Ultimatrix symbol on his chest.


Voiced by:

Freezeghost is an alternate counterpart of Big Chill. Freezeghost resembles his counterpart's 16-year-old design, but he has a different coloring scheme. His wings and antennae are a lighter blue. His chest is the same color as the wings. His belt is white with thin gold straps surrounding it and the Omnitrix is in the middle. His neck and head are white with specs of the same colored blue. His eyes are light blue.


Voiced by:

Fridge looks similar to Big Chill except that his cloak is longer and folded in a different way, and has a bigger stomach and lacks an Ultimatrix symbol on his chest.

Fridge wore a fake Ultimatrix symbol while playing Big Chill.


Voiced by:

Big Chill's offspring resemble Big Chill, only they are smaller and had larger eyes. They speak through high-pitched purrs and chirps.


Voiced by:

  • Dee Bradley Baker - Ben 10: Alien Force, Ben 10: Ultimate Alien, Ben 10: Omniverse (In "Trouble Helix")
  • Eric Bauza - Ben 10: Omniverse

Chromastone is a Crystalsapien (a combination of crystal- and -sapien which means "intelligent being made of crystal"). His home planet is MorOtesi.[note 3]

Chromastone is silicon based alien with a super dense skin, and has several shards of magenta crystals protruding through his clothes. He has great strength, the ability to fly and is indestructible due to his crystal skin. He is also able to absorb most kinds of energy like a conductor and channel it into multicolored laser blasts or less-intense natural light. In battle, Chromastone can allow energy to pass harmlessly through his body via refraction or blast it back at the foe; he can seemingly produce blasts without having to absorb energy, though it may be due to absorption of radiant energy like sunlight, or just ambient energy. However he is unable to absorb energy when not expecting it or is too weak to do so. Ben first used Chromastone to stop the zombified schoolgirls in "All That Glitters".

During the episode "Vengeance of Vilgax: Part 2", Chromastone was destroyed by Vilgax using his Taydenite sword, but the alien's remains reformed into Diamondhead, the reason for this is connected to the fact that Sugilite is the only one of his species. He hid himself until the time came for him to restore Petropia, which was shortly after Vilgax's destruction of the planet. It is believed that Sugilite is the guardian of the Petrosapiens, and that he was created as a backup system for the planet in case the planet was destroyed. Although Chromastone becomes accessible again after the events of "The Secret of Chromastone", Ben didn't use him until the pilot episode of Ben 10: Ultimate Alien to fight Bivalvan, being very surprised that he still had access to the form.

In Omniverse Chromastone is relatively unchanged except that his crystals are a little taller. He was first seen being used in Trouble Helix, when Khyber broke into the Plumbers' base for data while Ben was helping Driba and Blukic test energy weapons. In "A New Dawn", Chromastone gets a new appearance. He now wears a green jumpsuit. His body is now dark blue. He also has three spikes on his shoulder and arms. He also wears green gauntlets on his wrists and legs. His legs now have spikes. His face now has a magenta chin that also resembles a mouth guard, and four spikes on his head. He now speaks without moving his mouth at all. The Omnitrix is now on his right pectoral.


Voiced by:

Sugilite is a silicon based alien made of extremely durable crystal. His body is overall purple with several dark lines and spots. His hands and face are magenta, and he also sports six magenta shards on his back, two on his chest, and one on the top of his head that resembles a horn. They all turned red when he absorbed the back-up crystal. His face consists of a mouth and one large white eye at the center.


Voiced by:

Brainstorm is a Cerebrocrustacean (a play on cerebrum and crustacean) from the planet Encephalonus IV (a play on encepha-, a prefix referring to the brain), the previous three Encephalonus planets were all destroyed as the result of primitive Cerebrocrustaceans' attempts to take advantage of the storms surrounding their previous home worlds with poor results. Cerebrocrustaceans has supermassive intelligent crab-like creatures able to perform several complex calculations and use electric attacks with their pincers or by opening the exoskeleton plates that cover their exposed brains. They also have the power to levitate, create force fields, and cause a storm just by thinking. But their intellect makes the Cerebrocrustaceans selfish and eccentric. He has an IQ of 10^30 or one nonillion

As Brainstorm, with the Omnitrix/Ultimatrix symbol in his cephalothorax, Ben speaks with much greater diction and with a British accent. He was first seen in "Pier Pressure", to face Ship, but Brainstorm was an accidental transformation. In Omniverse, Brainstorm has black and green stripes; one in the center of his head, while the other goes under him. He now speaks with a Swedish accent.

Cerebrocrustacen ActorEdit

Voiced by:

Cerebrocrustacean Actor resembles Brainstorm's Alien Force/Ultimate Alien appearance, but with yellow eyes and no Omnitrix symbol.


Voiced by:

  • Juliet Landau - Ben 10: Alien Force, Ben 10: Ultimate Alien, Ben 10: Omniverse (Anodite form)
  • Barbara Bain - Ben 10: Alien Force (Elderly human form)

Verdona is Max Tennyson's wife, mother of Carl and Frank Tennyson, paternal grandmother of Ben and Gwen, and also could see that she is great-grandmother of Big Chill's proliferation. She is an Anodite alien from the distant planet Anodyne, who Gwen inherited the vast abilities of the control and manipulation of magenta/pink-colored life energy (referred to as manna, chakra, chi, or Quintessence) the very lifeblood substance of all magic and life itself. Like all Anodites, Verdona is a free-spirited being. Though sometimes acting more mature and grown-up, she mostly acts like a playful child. There is also another side of Verdona which is somewhat amoral and uncaring, for example when she almost destroyed Ben and Kevin when they first confronted her, only being stopped by the intervention of Gwen and learning who they really were. Likewise she was also willing to destroy her granddaughter's physical human body to release the Anodite lying dormant deep within her.

Verdona and Max had met in the beginning of the 1960s, in 1962, during President John F. Kennedy's presidency. Verdona left Anodyne in an unspecified time and was brought to Earth by a robot alien called Synthroid, who had captured her and wanted to use her to power his world. They crashed and landed in St. Louis where she met and fell deeply in love with Max after he saved her; they then courted each other and married. During this time she hid her Anodite heritage very well and blended in with society. During their time together, Verdona hid from Max that she knew about his occupation as a Plumber, prompting Max to always lie to her every time he left. Eventually after a long, happy and yet somewhat distant relationship, they parted.

They had two sons together, Carl and Frank, though neither of them showed any signs of inheriting Verdona's incredible abilities. When they were grown up and out of the house, she returned to Anodyne; after so many years on Earth, Verdona wanted to get back in touch with her background. She came back to Earth once to see if any of her grandchildren had inherited any Anodite abilities and powers from her, but saw that none did. Only several years later, she found out that Gwen, her granddaughter had developed powers and abilities of her own. It should be noted that Big Chill is in fact Ben, which makes Big Chill's offspring Verdona's great-grandchildren but it is unknown if they even could inherit her powers and abilities or if the energy from the Omnitrix will prevent them from having "the spark."

Verdona apparently favors Gwen over Ben; due to the fact that he did not inherit any powers (magical or Anodite-like) from her. This led her to put him to one side in her focus and/or ignore him as shown when she magically conjured tape on his mouth so that he could not speak. However, after their final fight against each other did Verdona saw just how much Ben cares about Gwen, leading the two to reconcile and part on good terms afterwards. She also has an uncanny sense of humor that was passed on to Ben. Arguably, Ben inherited his grandmother Verdona's spirit, sense of humor and overconfidence, while also inheriting his grandfather Max's determination, adventurous, bravery, and self-sacrificing attitude. Verdona has been shown to be a strict disciplinarian and to be serious when she needs to be, such as when Sunny went way out of line.

In Ben 10: Race Against Time, Max told Ben that his paternal grandmother had died, although this may have been a lie until the time was right to tell his grandchildren about their paternal grandmother being an alien from another world.

Verdona appears for the first time in "What Are Little Girls Made of?" when she explained everything to Gwen about her alien inheritance. She offered Gwen the chance to come back with her to Anodyne to reach the full potential of her powers and abilities (which would require seventy-five years), but Gwen had refused the offer. Verdona then shed her human body, revealing her true Anodite form. Thinking that Gwen was too young to make her own decisions, decided to destroy Gwen's human body to free the Anodite lying dormant inside. Ben and Kevin then stepped in to defend Gwen and, after the brief battle, Gwen explained to Verdona that she would rather stay on Earth with her friends and family. Verdona then tells Gwen that she wished that Max had been an energy being like them, expressing her deep longing for him, hinting that her desire to take Gwen with her could be just a front to fill the void in her heart. Verdona then promised to return every so often to see how Gwen was doing.

One year later, Verdona eventually returned in "Girl Trouble", where she was able to overpower Sunny (who was attacking Gwen). She then took Sunny and her boyfriend Antonio back to their home planets and allowed their parents to deal with them. Again, she was disconcerted when Gwen refused her offer to come with her to Anodyne.

The truth of how Verdona arrived on Earth and fell in love with her human husband is revealed in Moonstruck in the form of memories belonging to Max Tennyson. As a young Anodite, Verdona was taken from her world by a sentient and autonomous robot (known as a Synthroid), who intended to use her like a battery-due to her being made entirely of pure energy-and forcing her to fully energize the world of the Synthroids' for many years until it drained her dry. Fortunately, for Verdona, the spaceship was shot down by a seventeen-year-old Max, which allowed Verdona to escape but not before the Synthroid attached a metal bracelet on her wrist that turned into a humanoid teenager and rendered most of her abilities useless; except telepathy. Meeting Max in a diner, Verdona told the young man that he was the only one who could help her. The two then began to grow close and develop romantic affections for each other. after escaping another attack by the Synthroid, Verdona told Max who she was truly from and why the robot was after her. Max tried to break the bracelet neutralizing most of her powers, but failed. The Synthroid then knocked her unconscious and took Verdona to his ship. Using the strong telepathic link they now shared, Max came to save her. With the help of Magister Labrid, Verdona regained her Anodite form and full powers. She offered to take Max with her to show him the endless wonders of outer space. Knowing that she could not persuade him, Verdona expressed her romantic feeling for him in the form of a passionate kiss before flying off, promising to meet again.


Voiced by:

Spidermonkey is an Arachnichimp (a play on arachnid and chimpanzee) from the jungle planet Arahnascimmia (which is also called "Arachna"). Dwelling in tree tops to avoid the giant predators on Arahnascimmia's surface, Arachnichimps are four-eyed, four-armed blue monkey-like aliens with the ability to produce strong webbing from their tails.

Since first using the form in "What Are Little Girls Made Of?" to fight Verdona, Ben uses Spidermonkey as one of the most used aliens for being able to execute nimble hand-to-hand fighting though has got tangled in his webbing on occasion. Despite not being a strong form, Spidermonkey's wiry frame is suitable to evading danger. In Ben 10: Omniverse, Spidermonkey's design was substantially changed: Having two extra eyes, spiky hair, gray stripes, his nose has moved to his forehead, and two green sashes going across his chest where the Omnitrix is located. He first reappears in "The More Things Change : Part 1", for fight Crabdozer.

Ultimate SpidermonkeyEdit

Voiced by:

As Ultimate Spidermonkey, he is a bulky purple gorilla-like with four sharp spider legs sprouting from his back, and he had lost his tail and his extra arms. In this state, Ultimate Spidermonkey is stronger and can spit stronger webs from his mouth in a larger amount, which are waterproof. He was first seen in the pilot episode of Ben 10 Ultimate Alien, to fight Bivalvan, being the first ultimate form of Ben 10: Ultimate Alien. In "For a Few Brains More", Albedo uses another form of Ultimate Spidermonkey that has six arms.

Sentient Ultimate SpidermonkeyEdit

Voiced by:

The Sentient Ultimate Spidermonkey looks just like Ultimate Spidermonkey, except he has red eyes and lacks the evolved Ultimatrix symbol on his chest.

Mr. MonkeyEdit

Voiced by:

Mr. Monkey is an alternate counterpart of Spidermonkey. He looks similar to Spidermonkey but he has white fur, bluish grey skin, light blue eyes and blue sashes. His Omnitrix symbol is gold with light blue energy.


Voiced by:

  • Diedrich Bader - Ben 10: Alien Force, Ben 10: Ultimate Alien, Ben 10: Omniverse

Being an Arachnichimp, Simian bears a strong resemblance to Spidermonkey. However, he has yellow eyes instead of green, also lacking an Omnitrix symbol, and stripes on his tail.

In Omniverse, he still looks like Spidermonkey, but now has black eyes and yellow pupils. His hair is light blue with white streaks and now he has a flipped-up hairstyle. In addition, he wears clothing now, notably a pink shirt. He also now has two white stripes on his tail. In Collect This, Simian is shown wearing a wig identical to Gwen's hair, a purple plaid skirt, and Kevin's blue wholesters.


Voiced by:

  • Dee Bradley Baker - Ben 10: Alien Force and Ben 10: Ultimate Alien, Ben 10: Omniverse
  • James Remar - Ben 10: Alien Force (As Vilgax in "Primus")

Goop is a Polymorph (a word meaning "many shapes") from the planet Viscosia (a play on viscosity).

He is a 200-pound viscous life form, a shape-shifter made of green goo, which is also slightly acidic, controlled by an anti-gravity generator developed by the Galvans, that resembles a small flying saucer (which is where his voice comes from), and also has sharp edges. This device allows him to take any shape and levitate; however, if the ship and the slime are separated by even a short distance, the slime will become inert until the ship recollects it, and also it has a button that shuts off the anti-gravity.

In "Deep" Goop used his anti-gravity projector to keep the Piscciss planet's gravity, and he left his generator there, even after Ben turned back to human form. Dwayne McDuffie says the Ultimatrix will generate another anti-gravity projector; he also said that the original species of Goop did not use a projector.

Goop first appears to battles a Techadon in "The Gauntlet". In Ben 10: Omniverse, Goop has an amoeba-like shape; and the anti-gravity projector is redesigned, where the Omnitrix symbol is now on the top of the projector; also when Goop speaks now, a crackle of static is heard at the end of each line as if he is speaking through a walkie-talkie.

Muck AmuckEdit

Voiced by:

Muck Amuck is an alternate counterpart of Goop.

Alien XEdit

Voiced by:

  • Yuri Lowenthal - Ben 10: Alien Force, Ben 10: Ultimate Alien, Ben 10: Omniverse

Alien X is a Celestialsapien (celestial referring to a supernatural being and sapien from the Latin wise), native to the Forge of Creation also known as Zvezda, their birthplace, outside the known Universe, hidden from everyone except Paradox and whoever possess the Map of Infinity. Celestialsapiens have black silhouetted bodies resembling space with tiny white stars, and a white shadow and white hands, similar to a humanoid. With Paradox calling them omnipotent, Celestialsapiens can manipulate space, time and reality at any level they wish. They have multiple abilities as a result, such as having enough strength to smash through a planet with one punch, moving across an entire solar system in less than a millisecond, teleporting several miles or more in a distorted clear haze, or flying and levitating through air and space at any speed. The Celestialsapians have also demonstrated their ability to generate white, shockwave-like force fields that can physically repel another of their kind, instantly become the size of a star, regenerate and reform a body part with a thought if it is destroyed (though they can only be harmed by another Celestialsapien) and shape-shifting into a black hole-like portal that can absorb another of their kind. In addition, Celestialsapians can deflect and redirect energy blasts with their bare hands, turn into multiple duplicates that allow them to be in more than one place at once, and even telekinetically control motion and force to cause objects to levitate and fly at various speeds or control all vectors and directions for specific targets, the last of which allow them to perform a feat such as causing time to reverse for flood water (which manifested as white hazy energy waves reversing time for the water) from a broken dam, or cause enemy combatants to be reversed in time and end up attacking each other by positioning opponents in the path of each other's attacks. Also, their powers allow them to incapacitate, disorient, weaken, overwhelm or even harm another of their kind, enough that one Celestialsapien's hand was destroyed in a fight, though it was able to grow it back shortly after. Though all powerful, each Celestialsapien is normally in an inactive state of internal debate due to having a dual consciousness: One being a personification of love and compassion while the other embodies rage and aggression. Unless able to take action or achieve a balance between its two personas, a Celestialsapien normally remains still for long periods of time due to the conflicting personas. Their inability to agree greatly inhibits and weakens Celestialsapians, thereby keeping them from having full omnipotence at all times, while it also can physically make them more vulnerable to others of their kind. In fact, it has been demonstrated that having multiple decisions to make can overwhelm or confuse a Celestialsapian and weaken them further. However, the personas do have common ground in some matters such as a mutual hatred for Paradox for an unknown reason, allowing him to exist on the condition that he stays "500 light years" away from any Celestialsapien.

Alien X is the tenth alien that Ben becomes after his Omnitrix was reformatted when he stops a dam that had burst in "X = Ben + 2", becoming a metaphysical mediator within his mind for Alien X's personas, Bellicus and Serena, to settle their debates as their Voice of Reason, but his inability to get the two personas to agree makes Ben unable to physically move as Alien X. Since that point, he views the use of the form as a major risk despite acknowledging Alien X as one of his most powerful aliens.

After getting the Ultimatrix, Ben had a security protocol installed that locked the Alien X option to ensure the form would not be used if the item fell into the wrong hands and that he would not accidentally turn into it, Gwen and Kevin have the keys that undo the protocol. Ben had this undone in order to get Bellicus and Serena to help him to find the Forge of Creation and stop Aggregor, which didn't work. Paradox ended up getting Ben out of his Alien X form after the boy's attempt to reason with the two personalities failed, prior to them realizing Paradox's presence and were about to vaporize him upon a quick mutual agreement.

Alien X returned in Ben 10: Omniverse, in "So Long, And Thanks For All the Smoothies" (in this series the form now has a more pronounced chin). Though saving the universe from the detonated Anihilaarg is beyond them, Serena convinced Bellicus to let Ben use their power to create a new universe with everyone unaware of the slight changes and on the notion that the doomsday weapon was broken. But this action results in the events of "Universe vs. Tennyson" as the reboot was unsanctioned, with the ordeal at court ending with Ben gaining full control of Alien X by convincing Bellicus and Serena to focus solely on their debates. As a result, Ben is able to fight as Alien X without the risk of being immobilized. However, he does not seem to have full omnipotence at all times.

In the game Ben 10: Alien Force: Vilgax Attacks, Alien X was used to negate Psyphon's Null Void cannon and send Vilgax's entire ship into the Null Void.

Alien 23Edit

Voiced by:

Alien 23 is an alternate counterpart of Alien X.


Voiced by:

Lodestar (a play on lodestone, a magnetic rock, piece of magnetite) is a Biosovortian.

Lodestar has a floating metal head which levitates between his pointed shoulders, which is held in place magnetically, and his mouth doesn't move, has crab-like claws just like the claws on his feet. He has magnetic powers, being able to create magnetic fields, enabling him to repel, attract, emit magnetic pulses, and control metallic objects; and also attack using magnetism waves; he has an armored hull, very tough, but does not support a huge explosion, on the other hand, he can regenerate himself; and also he can make a shield and fly.

At the end of "War of the Worlds Part 2" when the Omnitrix resets itself after Ben reprograms the DNA of the Highbreed, it had unlocked new aliens, Ben transformed into him, but he wasn't seen, just his hologram. His official debut was in "Simple" to defeat the Red Army.

His Ultimate Alien debut was in "Video Games" in a failed attempt to fight the Stalker.

In Ben 10: Omniverse, Lodestar's design is relatively unchanged, the only changes are his head and legs. His head has a skull-like shape with yellow horns, similar to Jetray's; also he now can move his mouth when he talks. His legs have less black on them, the yellow going up past his knees.


Voiced by:

  • John DiMaggio - Ben 10: Alien Force, Ben 10: Ultimate Alien, Ben 10: Omniverse
  • Jeff Bennett - Ben 10: Alien Force (As Azmuth in "Primus")
  • Ashley Johnson - Ben 10: Ultimate Alien (As Gwen in "Inspector 13")

Rath (a play on "wrath") is an Appoplexian (a play on apoplexy, an informal sinonym to extreme anger) from the planet Appoplexia. Resembling large, muscle-bound, humanoid tailless tiger-like aliens, Appoplexians suffer from aggressive temperament and decreased reasoning power, having a need to fight anything that breathes regardless of whether they fight their own friends. Their mannerisms and speech are reminiscent of a professional wrestler speaking in third person, saying "Lemme tell ya somethin'!" then followed by the full name of whoever they are talking to. In addition, each Appoplexian has two retractable claws on the wrists that can generate shockwaves when driven into objects. They are durable to the point of surviving in space for short periods and take a powerful laser cannon blast at point blank range without even flinching. But one downside to Appoplexians, other than their tempers, is acute aquaphobia.

Ben first becomes Rath in "Con of Rath" (A play on "The Wrath of Khan" from the second Star Trek movie) when the crown prince Tiffin sets off the Omnitrix's circuit, and caused it to keep Ben in that state for the whole episode until Tiffin leaves, and when Ben found out that Kevin knew about it all the time, he turned back into him to beat Kevin up. Though being Rath alters his mind (to the point where he tries harming Captain Nemesis for cheating in a race), Ben uses him as one of his more powerful alien forms due to being gifted with enough physical agility and strength to easily lift objects far larger than him and pummeling most enemies with ease. Both Kevin and Gwen find Rath the most amusing of Ben's aliens, often laughing behind his back or out of Ben's hearing range while he's Rath.

In Omniverse, Rath's appearance is basically unchanged except he has different-shaped eyebrows and they are now black. He reappears in "It Was Them" to fight Dr. Animo's giant ants. It's later revealed that, unlike other Appoplexians, Rath does not wear any clothing. This is odd, considering that the Omnitrix would usual adapt the user's clothing to the alien they turned into. During the events of "Secret of Dos Santos", due to Skurd's tinkering with the Omnitrix which also resulted with him speaking Spanish, Rath ended up in luchador garb.

Ultimate RathEdit

Voiced by:

While the ultimate form of an Appoplexian, Ultimate Rath is wearing attire in homage to Kraven the Hunter of the Marvel comics universe and able to speak normally, it is a form exclusive to Albedo that he first used in "Malgax Attacks".


Voiced by:

Bioids have a blank, spherical face and an almost completely white body. They have a red U shape on the front and back of their torso, a red patch on the groin, elbow, knee and ankle joints.


Voiced by:

Terraspin (a pun on the turtle terrapin) is a Geochelone Aerio (a play on Geochelone, a turtle found in Africa, Asia, and the USA, and "Aerio" a play on air) scanned from Galapagus in "Escape From Aggregor"; from the Andromeda Galaxy planet Aerio (destroyed by Aggregor) and moved to the Andromeda Galaxy peaceful planet Aldabra (a pun on the island of the Aldabra Group).

Terraspin is a turtle-like alien with holes in chest, and big flat flipper-like arms with retractable claws that can be used as fingers. He has the ability to retract his head into his shell, where an opening in the shell serves as a viewfinder, his fins become triangular and his legs combine into a similar triangular shape, he blows a powerful wind from the holes in its shell while also using his triangular shape arms as propellers; allowing varied powers such as creating winds and spinning himself at high-speed; he uses the blowing ability to fly. Terraspin also has super-human strength, and his species is impervious to mana.

In Ben 10: Omniverse, Terraspin now has six holes instead of eight, has spots on his legs, toes and shoulders. Also his skin is now green instead of a tan/brown, and he has gained toes on his feet.


Voiced by:

Galapagus (a play on the Galápagos Islands, which are home to the Galápagos tortoise) is a turtle-like creature and Terraspin's genetic donor. Like the other members of his species, he is gentle, kind, and easily scared.

One day, Aggregor attacked his home planet, captured him, and imprisoned him with the other four aliens he had captured. When the five attempted to escape Aggregor's ship, Galapagus suggests using his communicator to send out a distress message. Even though he and the other aliens are put back into the cell, his message is heard by Magister Prior Ghilhil, who boards Aggregor's ship and finds the five aliens, only to be attacked by Aggregor. Bivalvan, P'andor, Andreas, and Ra'ad escape again, but Galapagus seemingly betrays them to Aggregor in exchange for his own freedom. When Aggregor admits he wasn't going to free him, Galapagus admits he didn't intend to betray the others either and incapacitates Aggregor. He then leads the escape to a shuttle, which Aggregor shoots down and causes to crash on Earth. Afterwards, each split up to find a way off the planet while Bivalvan stays with the shuttle and attempts to repair it.

Seeking help, Galapagus attacked Bellwood's downtown to get the attention of Ben. While battling, Gwen notices that he hadn't actually harmed anyone, and convinces Kevin to use the translator in his Plumber's badge to translate his words into English. After hearing his story of how he escaped Aggregor, Ben scanned samples of his DNA for the Ultimatrix, and has him taken back to his home planet in a Plumber spaceship. However, Galapagus finds out the spaceship's pilot is Aggregor in Magister Prior Gilhil's Plumber suit.

Aggregor's needs for Galapagus's powers were made apparent in "Where the Magic Happens", as his species is immune to mana.

Water HazardEdit

Voiced by:

Water Hazard is an Orishan from the Andromeda Galaxy planet Orishaia (a play on Ushuaia, a city in Argentina). He has a red cape type "shell" that covers his head. He has the ability to blast water from his hands. Ben obtained Water Hazard by scanning Bivalan. Bivalan was on Aggregor's ship along with the genetic donors of AmpFibian, Armadrillo, Terraspin, and NRG. In "Too Hot to Handle", Ben decided to use the diplomatic approach with P'andor and transformed into Water Hazard, pretending to be Bivalan; though unsuccessful in negotiation, Ben duped P'andor into thinking he was Bivalan. In Omniverse, Water Hazard has six eyes and barnacles on his body.


Voiced by:

Bivalvan (a play on bivalve, a term for clams and oysters) is a crustacean-like creature and Water Hazard's genetic donor.

Every night he would rise out of the ocean and raid NASA, steal equipment from their secret rocket project, and use the stolen items to repair the ship. Unfortunately if he had managed to launch the ship, the nuclear bomb he was going to ignite it with would have destroyed most of Florida. Ben, Gwen, Kevin, and Julie were able to stop Bivalvan from launching his ship, scanned his DNA, and promised that they would send Plumbers to get him and send him back to his home planet. However, Aggregor arrived before the Plumbers and recaptured Bivalvan.

Aliens introduced in Ben 10: Alien SwarmEdit


Voiced by:

Nanomech is a Nanochip/human hybrid being, part drone, part human. He is a Nanomechian.

He is an inch tall being, but it's worth noting he is drastically different from the source alien, which are bug-like, while Nanomech takes more on a humanoid shape. He has a crest-like growth on his head. He has the ability to fly with his wings for added maneuverability, which glow when he flies; shoot energy balls from his hands and his eye; and also he is the opposite of Humungousaur, Nanomech can change his body size to a microscopic size to adapt to any situation, but can't grow to any bigger size. However, being a part of the chips' hive mind renders him vulnerable to the Queen's link to the other chips; however, unlike the drones, he retains his individuality.

In Ben 10: Alien Swarm, Nanomech was unlocked by scanning the Nanochips. He was used to enter Victor Validus's brain and battle The Queen; Ben destroyed her and thus the entirety of the chips, freeing everybody from their control.

He first appears in Ben 10: Ultimate Alien episode "Video Games", with his appearance and voice changed; Nanomech would be in a supposed video game he was going to appear in, but Nanomech was regarded too small for the video game. Later in the same episode, he was used to tear apart the insides of Will Harangue's robot.

In Ben 10: Omniverse, he now has a design that combines aspects more from Alien Swarm. He no longer has his circuits, and has different wings and a more robotic voice tone; also his Omnitrix's symbol is now where his eye used to be.


Voiced by:

Teeny-Weeny is an alternate counterpart of Nanomech.


The Nanochips are tiny, mechanical insects. They are yellow/orange/red in Alien Swarm, but are blue in Ultimate Alien.

Aliens introduced in Ben 10: Ultimate AlienEdit


Voiced by:

AmpFibian is a blue jellyfish-like alien called an Amperi with four tentacles from the planet Andromeda Galaxy planet Amperia. He has the ability to generate and drain electricity from his tentacles; can sense the electrical pulses in the minds of other life forms, allowing him to read their thoughts, though it seems that Ben doesn't know how to do this; turn intangible, stretch all of his tentacles, and absorb and redirect energy beams. AmpFibian can also travel through air, water, and electronic currents by turning his body into electricity. However, if he is using electricity while entering water, he will electrocute himself.

Though unintentionally first used in "Fused", where Ra'ad entered Ben's body during the DNA scan in a freak accident in an attempt to take the Ultimatrix offline to evade Aggregor to track him down; which explains that the first time, he had blue eyes and had a voice that sounds just like Ben's but it has the effect of being phase-shifted because of Ra'ad. The first intentional use was in "Deep", to breathe under water on the planet Piscciss, where from this time he has green eyes.

In Ben 10: Omniverse, AmpFibian didn't change too much except for his pointed tentacles, black eyes with small areas of green, and the Omnitrix on his face.


Voiced by:

Ra'ad (a play on Ra'ad, the popular Arabic male given name for thunder) is an Amperi and the AmpFibian's genetic donor. Preferring to be quiet and observant questioning Galapagus's trust briefly and agreeing that Bivalvan's plan was the best. He also appeared somewhat controlling, having a short argument with P'andor over power but quickly changed his mind and went along with Bivalvan.

After learning that Aggregor had captured the others, Ra'ad attacked Ben and blamed him, thinking he had given the others aliens to Aggregor. Ben defeated and captured him, but Ra'ad duped them into letting him go, under the pretense of friendship. Ra'ad then entered the Ultimatrix forcing Ben to change into his form, and slowly taking control of his mind, but while he was undercover, he kept the Ultimatrix off-line, so Aggregor couldn't track him. Kevin was able to force the Ultimatrix to reboot, knocking Ra'ad out of it. Sensing Aggregor's approach, he fled, leaving Ben and company to fight him. However, after being scolded about his cowardice by Kevin, he returned, saving Ben from Aggregor's attack, but in doing so he ended up getting recaptured by Aggregor.


Voiced by:

  • Dee Bradley Baker - Ben 10: Ultimate Alien
  • John DiMaggio - Ben 10: Ultimate Alien (As the 16-year-old Ben in "Ben 10: Omniverse vs Ben 10: Ultimate Alien), Ben 10: Omniverse

Armodrillo is a Talpaedan (a play on talpidae, a name for a family of mammals that includes subterranean animals such as moles) scanned from Andreas in "Andreas' Fault"; from the Andromeda Galaxy planet Terraexcava (from Portuguese Terra Excava means "Excavated ground").

Armodrillo is a strong armored robotic armadillo-like alien with a head that looks similar to a Corinthian helmet. He has an invulnerable armor that protects him from most kinds of damage; has two jackhammer-like arms, that allows the ability to drill into the ground, or form jackhammers that cause tremors, shock waves and earthquakes; he can also turn his hands into actual drills, and launch objects from his hands by using hydraulics. Despite all this mechanical appearance, he is biological and the armor and drills are natural. Ben first used Armodrillo to defeat Computron and the robots from the Dimension 12 released by Captain Nemesis in "Hero Time".

In Ben 10: Omniverse, his design now includes a different head shape, bolts on his shoulders and has a metal circle on top of his head; a tail and fingers with horizontal lines. He is also one of Ben's most recurring transformations, whether it's intentional or accidental.


Voiced by:

Toolboxx is an alternate counterpart of Armodrillo. He looks almost the same as Armodrillo. But, instead of yellow and dark grey, he is colored mild blue and gold.


Voiced by:

Andreas (his name and the name of the episode, "Andreas' Fault", are a play on the San Andreas Fault) is a large, bulky, yellow, armored alien with jackhammers and drills in his arms and is Armodrillo's genetic donor. He is reckless, as well as oblivious, proven when he repeatedly attempted to wreck a spaceship while still inside it. His intelligence is quite low, and doesn't even know what an asteroid is. However, being dimwitted, he often uses these powers at the inconvenience of allies and enemies alike. His personality and actions are very similar to Rath. On the other hand, Andreas is a little more gullible than hardheaded as he tends to make attachments to pretty much anyone who he thinks is nice or is the strongest (this was proven when he blindly followed P'andor, who had over-powered Bivalvan and taken charge). Andreas has shown him to be a gentle giant, getting easily scared, and thinks most people are his friends.

Sometime after he separated from the others, he met up with Argit, who became Andreas's "friend". Then he took command of the Forever Knights by threatening to use Andreas to destroy their castles. His plan backfires when the Forever Knights rebel and capture Andreas, Argit, Ben and his friends. Andreas is to be executed but Ben and his friends save him and he then considers them friends. When the Forever Knights set a weapon to self-destruct, Andreas decides to save his friends by absorbing the blast on Argit's suggestion. Andreas saves them and was assumed dead by everyone. Miraculously, Andreas survived but was greatly injured, which made it easy for Agreggor to arrive and capture him once more.

While he was on Aggregor's ship, he was much braver, but on Earth, Andreas's personality is like that of an innocent child. He scares easily but takes comfort in his friends, whether they are bad or good.

Ultimate AggregorEdit

Voiced by:

Following the absorption of his five victims, Ultimate Aggregor went through a mutation similar to that of Kevin Levin - his new identity was known as "Ultimate Aggregor." However, unlike Kevin, Ultimate Aggregor's appearance is more refined and balanced, as opposed to Kevin's random and mixed placement of alien organs - a result of a special machine he used, as Ultimate Aggregor's powers have the full potency of his victims' energy. His mixed body parts consisted of the hands and legs of Bivalvan, the front torso of Galapagus (though with a darker color), the unarmored back of Andreas as well as his arms, P'andor's faceplate on his neck, and seal on his chest, and a head resembling that of Ra'ad. His eyes became blood-red and his height increased to roughly ten feet.


Voiced by:

NRG is a Prypiatosian-B (a play on Prypiat, a city that was evacuated due to the Chernobyl disaster) scanned from P'andor in "Too Hot To Handle"; from the Andromeda Galaxy planet Prypiatosia.

NRG is a radioactive energy being with a Russian accent, encased within an oven-like invulnerable containment suit that contains his radiation. When released, he is able to shoot energy beams and can create intense heat, enough to create the intensity of a nuclear bomb; he is capable of becoming intangible, so he cannot be touched except by the material his armor is made of. His armor is so tough that can only be broken with a sharp piece of Taydenite; but even trapped in the armor he can still use part of his power when it is released. he can shoot energy beams through the holes of the viewfinder, and can generate intense heat, being able to turn his armor red hot and melt solid rock; and has super-human strength. Ben first transformed into NRG by accident to defeat the 10-year-old Ben as the original Heatblast in "The Forge of Creation".

In Ben 10: Omniverse, his new design includes a handle-like form on the top of his head, and has bolts on his body. Because of the handle, his armor can be opened easily. His true form wears two straps, a belt, two wristbands on both arms and two knee braces on both legs; and he has another Omnitrix symbol, in his belt. This "outfit" is actually a lower level containment field. Before the Omnitrix times out, Ben must return to the protective suit, but the Omnitrix will replace it, as seen when he transformed into Water Hazard in "The Frogs of War Part 1" from outside the suit.


Voiced by:

P'andor (a play on Pandora's box, a box which, if opened, would release all the evil of the world) is a Prypiatosian-B trapped inside an armored suit that limits his powers. He's the most aggressive and hot-headed of the five aliens. P'andor is being more aggressive than others, and seemed to have a rivalry going with Bivalvan and had a tendency to berate Andreas for not thinking. He is also NRG's genetic donor.

Desperate to return to full strength, he ends up establishing a reward to whoever can break open the suit. When the hired help consisting of Buzz, Hammer, and Surgeon are unable to use the Taedenite to break it open, P'andor sends them to capture Kevin. Upon his hired help capturing Kevin, P'andor tricks him into releasing him from his containment suit (the only thing limiting his powers). Revealed as a living energy being, P'andor attempts to drain the radiation out of a nuclear power plant, but also his presence in the Earth without his suit was dangerous, because he is radioactive. Kevin and Ultimate Cannonbolt are able to trap him back in his suit and turn him over to the Plumbers who deport him back to his home planet. Unfortunately, their ship is intercepted by Aggregor who blasts the Plumbers out into space and recaptures P'andor. In "Too Hot to Handle", P'andor was the only antagonist between the Andromeda Galaxy aliens.

Ultimate KevinEdit

Voiced by:

Big Chill: Wings, hood. Brainstorm: Two legs in place of lower left arm, right hand. Chromastone/Suglite: Right shoulder crystals. Diamondhead/Tetrax Shard: Right arm structure. Echo Echo: Inner mouth. Four Arms/Manny Armstrong: Torso, body shape, arm count. Goop: Body structure. Humungousaur: Torso, chest plates, tail. Jetray: Face, skin, right foot. Kevin Levin: Hair, clothing. Lodestar: Left shoulder spike. Rath: Upper left arm, left foot, left wrist claw. Spidermonkey: Lower right arm, arm count. Swampfire: Left arm structure. Ultimate Humungousaur: Face, right eye. Ultimate Spidermonkey: Lower jaw. Water Hazard/Bivalvan: Water ports.


Voiced by:

Eunice's base mobile form is a teenage human girl. She has shoulder-length blonde hair with a single bang and bright green eyes. When Ben's Team first found her, Eunice was completely naked, then she borrowed Ben's jacket so she wouldn't be seen naked. Afterwards, she borrowed a pink tank top, white shorts and brown flip-flops from Gwen. Since working for Azmuth on Primus, she now sports a white jumpsuit with black stripes. There are green rectangular markings on the back of Eunice's neck. When they are pressed, Eunice turns back into the Unitrix. In Omniverse, Eunice now wears a white dress with a black collar and one stripe in the middle. She wears black fingerless gloves and now wears black leggings. Her hair is now shorter and wears a black hairband, which resembles Gwen's season two look in Omniverse. In her true form, Eunice is the Unitrix, a core similar to the Omnitrix and Ultimatrix.

Unlike future models, the Unitrix resembles a container instead of a watch, but does feature a control dial that, when pressed down, turns it to its mobile DNA form (in this case, Eunice).

Sunny TennysonEdit

Voiced by:

In Ultimate Alien, Sunny's human disguise, Sunny is the spitting image of Gwen, with the exceptions of her having black hair that hangs free, instead of red hair in a ponytail, and dark blue eyes rather than green eyes. Her lips, height, and facial features are identical to Gwen's. She wears a purple T-shirt, a black mini-skirt and black leather boots. Like Verdona, she is able to switch between her human and Anodite forms; however unlike Gwen, she does it much more freely, where she literally takes off her human skin like taking off a costume.

In Omniverse, in her human disguise, Sunny is the spitting image of Gwen again, right down to the attire, only with black and purple theme colors for the attire. Her lips are black and has purple eyes instead of green eyes. She wears purple glasses.


Voiced by:

Fasttrack is a Citrakayah (A play on Citroen) from the planet Chalybeas (From "Chalybeate" mystical waters containing salts of iron possessed by the extinct "Chalybes" community in accordance to the enchanted strength element). Fasttrack is a blue and black alien with two mask-like projections on his eyes. He moves at high speed like XLR8, and also has enhanced strength as he was strong enough to carry both Hulka and Tack without losing any speed, however, he doesn't easily stop from running, probably because he can't manipulate friction as XLR8 does. He made his first on-screen appearance in "Basic Training" where he saves Tack and Magister Hulka from a malfunctioned grenade. He has the ability to run through the time and space barrier and he is stronger than XLR8.


Voiced by:

Fastcat is an alternate counterpart of Fasttrack.

Ultimate BenEdit

Voiced by:

Ultimate Ben is the ultimate form of Ben 10,000. Ultimate Ben's appearance does not change. Instead, the Ultimatrix face is set on the center of his chest with the four prongs that symbolize that the evolutionary function has been activated.

A large hologram of the alien he chooses appears in green color whenever he accesses their powers.


Voiced by:

ChamAlien is a Merlinisapien from an unknown planet. Lizard-like with three eyes, usually each a different color, a Merlinisapien can change colors to camouflage himself with only his shadow visible; he can also grow a spike out of the end of his tail; in addition he is very agile, flexible, fast, slippery, has great strength, and can also stick to surfaces with his great physical adherence.

Ben obtained ChamAlien from the one of the last living Merlinisapiens, designated "Prisoner #775", after the events of the titular episode. While transforming into him for the first time, Ben called the form "Overkill" because Gwen said earlier in the episode about the fact that he shouts out his alien forms' names.

Prisoner 775Edit

Voiced by:

Prisoner 775 looks exactly like ChamAlien without the Ultimatrix symbol.


Voiced by:

Eatle is an unknown species from an unknown planet that resembles an armored robotic humanoid alien with a Rhinoceros beetle-like horn and a big metal mouth. He has sharp fingers, and a super-strength, allowing him to eat big pieces of any material; and has powers similar to Upchuck, he can eat many things, and convert them into powerful laser beams that he shoots from a slot on his horn; he can also use the horn as a battering ram and possess a durable hull; however Eatle has a blind spot due to his eye placement, making him easier to sneak up on. He briefly made his debut in "A Knight to Remember", on a short failed attempt to fight Vilgax.

In Ben 10: Omniverse, Eatle was also re-designed: his look is not robotic or humanoid and now is similar to a Japanese rhinoceros beetle; he now has a green stomach, and he can also move his mouth.


Voiced by:

Clockwork is a Chronosapien (Chrono meaning time, and sapien from the Latin wise), a race of mechanical lifeforms that are steampunk in design and speak in German accents. Capable of travel through time and space, Chronosapiens are able to produce time rays that can either age or regress their targets or slow everything down around them. They can display events that have happened in the past by rotating the keys on their heads, which produces a light that create holographic images of past actions. The use of a Chronosapien's powers creates a ripple effect which can be sensed and reversed by another. Chronosapien's are slow runners.According to Ben 10,000, the Chronosapien race gone rogue during a Time War occurring within the Omniverse series.

Clockwork indirectly debuted through Ben 10,000 in "Ben 10,000 Returns", used to send Eon to the past, and to destroy the Hands of Armageddon with the help of 16-year old Ben as Way Big. He appears later in "Inspector 13", when the Ultimatrix malfunctions, causing Gwen and Kevin to transform into the Ultimatrix aliens. Clockwork makes his official debut in "Catch a Falling Star" to fight Overlord.

In Ben 10: Omniverse, Clockwork's design is relatively unchanged; he only has a larger body and a wind up-like shape on his protrusion on his head. During the events of "Ben Again", trapped within his 11 year old body, Ben briefly accessed a younger version of Clockwork. 11-year-old Clockwork looks very similar to older Clockwork, but his face looks more like an emoticon. He also has a white shirt with a black stripe on it.


Voiced by:

Windy-Hindy is an alternate counterpart of Clockwork.

Jury RiggEdit

Voiced by:

Jury Rigg (a play on Jury rigging) is a 1-foot tall gremlin-like alien able to disassemble and assemble any machinery in quick time, though Jury Rigg is prone to manic needs to break and fix. He was first introduced in "The Eggman Cometh" three times: the first two with Ben unable to control himself as Jury Rigg before managing to muster enough willpower to fully utilize Jury Rigg's abilities in destroying Dr. Animo's machine and rebuild it with an opposite function. In Ben 10: Omniverse, Jury Rigg ironically now wears a 1900s aviator's suit, which includes goggles and a scarf that further his Gremlin-like features.


Voiced by:

Crashhopper (A play on "grasshopper") is an Orthopterran with the primary power control the muscles of his legs, allowing him to jump in a long distance on a high speed, causing a sonic boom. Due to his powers based on high jumps, he possesses a resistant skull, which is used to hit with great impact.

Ben debuted Crashhopper in "Ben 10: Omniverse.


Voiced by:

  • David Kaye - gGravvattack is an alienGalileo Galilei, an esteemed astronomer) from the planet Keplorr (From Johannes Kepler who discovered the laws of planetary motion). He is a living planetoid alien with a giant mouth and a molten (planetary) core at the center of his body and has the Omnitrix symbol on his forehead.

Gravattack has the power of manipulating the gravity of himself and others, changing the mass, making it heavier or lighter. Also with his gravity manipulation, he is able to make objects "orbit" around him like a planet and he can convert himself into a planet for better influence. He first appears in "A Jolt from the Past" to fight Fistrick in his Class 12 Armored Mecha Suit.

Ultimate GravattackEdit

Voiced by:

While the ultimate form of a Galilean, Ultimate Gravattack is more planet-like in appearance with three orbiting planetioid-like orbs surrounding him, it is a form exclusive to Albedo that he first used in "For A Few Brains More". and more thing.

Orbit ManEdit

Voiced by:

Orbit Man is an alternate counterpart of Gravattack.

Ball WeevilEdit

Voiced by:

Ball Weevil (A play on "boll weevil") is an Insectoid and a small yellow beetle-like alien with the ability to spit sticky balls of plasma; this goo ball absorbs matter while it rolls, getting bigger and either explodes upon impact, expanding until detonating, or is remotely exploded by Ben, one of his powers as Ball Weevil; making the force of the explosion vary depending the size of the ball. He also has an enhanced agility, which allows him to move his goo to hit where he wants, and also seems that he can resist the explosive force of his own goo, even when he is stuck in it.

Ball Weevil makes his first appearance in "Ben 10: Omniverse vs Ben 10: Ultimate Alien", to have a fight the Ben Tennyson (In Ultimate Alien).

Aliens introduced in Ben 10 / Generator Rex: Heroes UnitedEdit


Voiced by:

  • David Kaye - Ben 10 / Generator Rex: Heroes United, Ben 10: Omniverse

Shocksquatch (A play on electric shock and Sasquatch) is a Gimlinopithecus (A play on Robert Gimlin and Gigantopithecus) from the planet Pattersonea (A play on Roger Patterson). Gimlinopithecuses are Yeti-like aliens with great coordination and strength, they have small metal plates all over their bodies that can conduct electricity. Their only weakness is being insulated, making their ability to conduct electricity useless. He speaks with a Canadian accent.

Ben briefly became Shocksquatch in the special crossover "Ben 10/Generator Rex: Heroes United" due the Alpha Nanite hacking the Ultimatrix a couple of times.

In Ben 10: Omniverse, Shocksquatch was entirely re-designed, he appears slimmer than usual and he now has yellow and black fur, along with bigger fingers and toes; he also now has two plates on the side of his wrist instead of the back of his hands. He now has green eyes with black pupils, and has yellow horns; his symbol is on a green belt. He reappears in "The More Things Change" 2-parter to defeat Buglizard. He is another of Ben's Omniverse regular transformations.

In "Store 23", Ben 23 uses Shocksquatch with the name "Electricyeti".


Voiced by:

Electricyeti is an alternate counterpart of Shocksquatch. Electricyeti has yellow and blue fur, along with grey fingers and toes. He has two bolts on the side of his wrists instead of the back of his hands. He has blue eyes with black pupils and yellow horns. He also has a blue belt where the Omnitrix symbol is located. The Omnitrix symbol is blue with a gold outer casing.

Kickin HawkEdit

Voiced by:

  • Yuri Lowenthal - Ben 10 / Generator Rex: Heroes United, Ben 10: Omniverse

Kickin Hawk (a pun on "kicking" and "chicken hawk") is a chicken/hawk-like combatant alien with a white mohawk-like comb. His powers are retracting talons from his hands and scythe-like blades from his elbows and using them for battle. He can cut objects by using the blades on his arms. He has enhanced strength, managing to take on Fistrick and the Muroids by himself. He is also very skilled at hand-to-hand combat. Ben accidentally downloaded Liam when fighting him. He scanned him and turned into a Ben 10 version of Liam and called him Kickin Hawk.

He first appeared in "Outbreak" fighting Liam (his genetic donor despite being more chicken-like).


Voiced by:

Liam 's appearance is very chicken-like, having feathers and a beak. He also has two bandoleers connecting together on his chest. As seen in The More Things Change: Part 1 he clucks like a real chicken. His upper half is beige, the lower half is brown, he has orange feet-like hands and sticking out of his head on the top as well as his bottom are red feathers.

When he was a Vaxasaurian hybrid, Liam looked similar to Humungousaur, only he still had the feathers on his head and his eyes were unchanged. He also had the bandoleers he was wearing before.

Aliens introduced in Ben 10: OmniverseEdit


Voiced by:

Zed is an Anubian Baskurr and she is a dinosaur and dog-like alien, being dark blue in color. She has spike-like hair running down from her collar to the tip of her tail. She has sharp red eyes and black lines on her neck and legs.

Zed used to wear a red spiked collar that had the Nemetrix on it, but now she wears a light blue collar with a gold bone-shaped dog tag.

Rook BlonkoEdit

Voiced by:

Rook Blonko is a Revonnahgander from the farm planet Revonnah. He is a new Plumber, assigned to Ben by Max after Gwen and Kevin left. To be technical, Blonko is actually his name; Revonnahganders have their family name first, similar to Earth eastern customs.

He is a top Plumber Academy graduate, being a highly skilled fighter. He possesses many Plumbers' weapons and technology, such as Proto-Tech Armor and the Proto-tool, a shape-shifting weapon that turns into a sword, bow, grappling hook, blaster, etc.

Rook is an extremely skilled fighter with advanced knowledge and training. But he is a "by-the-book" cop with no actual experience, always treating Ben as a superior rather than a friend or a partner. It is said that the reason he and Ben are good partners for each other is that Rook is all training, no experience, while Ben is all experience, no training. Rook has limited Earth cultural knowledge and an inability to understand sarcasm, in contrast with Ben's wise-cracking, trial-and-error personality. As a result, Ben was initially reluctant to accept the collaboration, even feeling it was forced by Max, but eventually begins warming up to him. Rook, on his side, is well-aware of Ben's status as a hero and admires him for it. His lack of understanding Earth expressions has caused him to be injured or miss opportunities. Template:Overly detailed inline

Towards the end of the series, Rook's performance as a Plumber resulted in his promotion to the rank of Magister. In the future timeline seen in "The End of an Era," he is to assume the office of Magistratus, previously held by Max.


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Bloxx (a play on "blocks") is a Segmentasapien (Portmanteau for "Segment" for part and "Sapien" for wise in Latin) from the planet Polyominus ("Poly" for many), whose body is totally composed by building blocks as his name states.

His primary power is shape shifting. He can alter his body structure into any form needed; this includes some regenerative ability. He can also can use his blocks to stretch and build himself. Due his shape-changing abilities based on blocks, his body is fragile and is easily broken when hit with enough force, but since he can regenerate it doesn't matter whether his body structure is broken or not. Ben first uses Bloxx in "The More Things Change Part 1", to save the alien grocery store of Bellwood and to help Rook disable the bomb.

Bloxx has four main shapes: His normal form, his ball form (similar to Cannonbolt), his wall form, and his dome form.


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Build-A-Guy is an alternate counterpart of Bloxx. Build-A-Guy's appearance looks similar to Bloxx's. His three main colors are; white, light blue, and gray, with black lines all over his body, unlike Bloxx whose main colors are; red, blue, and yellow.


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Walkatrout (a play on walkabout and trout) is a blue spherical fish-like alien with legs. Walkatrout is also the species name. It has a slippery body, enhanced agility, and is presumed to have the ability to breathe underwater.

He first appeared in "Outbreak" while Blukic and Driba were trying to fix the Omnitrix. It is a blue trout with legs.

Pesky DustEdit

Voiced by:

Pesky Dust (a play on "pesky" and pixie dust) is a Nemuina, a pixie-like alien that can put people to sleep and manipulate their dreams for information. While Pesky Dust first appeared in "Outbreak" while Blukic and Driba were trying to fix the Omnitrix, Ben got to better utilize the form in "For A Few Brains More" to force Albedo's location out of a fearful Khyber, who possesses no defense against a Nemuinian's powers.

Nighty KnightEdit

Voiced by:

Nighty Knight is an alternate counterpart of Pesky Dust. He looks the same as Pesky Dust, but he has blue clothing instead of green and a lighter blue skin color. He also has blue eyes and gloves. His Omnitrix symbol is blue with a gold outer casing.


Voiced by:

Mole-Stache (a play on mole and moustache) is an orange mole-like alien with an British accent and a yellow moustache that can be used in a variety of ways that include serving as an extra set of hands or as a makeshift propeller. While Molestache first appeared in "Outbreak" while Blukic and Driba were trying to fix the Omnitrix, Ben got to better utilize the form in "Breakpoint" when he defeats Fistrick. In "Store 23," Ben showed them to Ben 23 to see what aliens his dimensional counterpart had unlocked. It's revealed in "Breakpoint" that Molestache speaks with a British accent.

The WorstEdit

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The Worst is an Atrocian, a yellow pudgy alien that is practically indestructible yet can still feel pain and thus ineffective in combat. The Worst was what Ben called the form at the time, so it may not be his actually name.

The Worst first appeared in "Outbreak" when Blukic and Driba were trying to fix the can also stop or clogs energy blast,but still feels pain.


Voiced by:

Toepick is a yellow-skinned ogre-like alien who wears a metal cage as a helmet to conceal his horrific face which induces fear in any who see it, even himself as his own species cannot look at each other for that reason. The Omnitrix symbol is on the bottom of the collar his cage is on, which is connected by chains to a pair of black briefs.

Toepick was mentioned in the original series' non-canon episode "Ken 10", as one of the ten accessible aliens in Ken's Omnitrix. He makes his debut appearance in the episode "Special Delivery" to overwhelm Psyphon with his face. He later is used by Ben in "Something Zombozo this Way Comes" to scare Zombozo into submission.


Voiced by:

Astrodactyl (From Astro and Pterodactyl) is a pterosaur-like alien from the planet Terradino (Humungousaur's planet), that uses a propulsion jetpack to fly. Astrodactyl also uses an internalized star power from sonic booms to energy whips. He wears the Omnitrix symbol on his shoulder. A downside is that Astrodactyl has low endurance and vulnerable to Electricity. Astrodatcyl makes his debut appearance in the episode "While You Were Away" to fight Dr. Pyschobos.


Voiced by:

Bullfrag (From "Bullfrog", and the prefix -frag, which means annihilate) ("frag" could also be a reference to the Incurseans' Boston-like accent, as they would pronounce words differently, making "frog" sound like "frag") is an Incursean (play on Incursion). The Incurseans are a race of violent toad-like aliens with New York accents, forced to become spacefarers after the eon-long civil war on their homeworld ended a millennia ago as the result of their planet being inadvertently destroyed by Ascalon's power. Besides their extendable tongues, Incurseans make use of their agility and leg strength in a fight. Ben gained Bullfrag during the episode "The Frogs of War" by Azmuth to infiltrate the Incurseans' ranks with the Omnitrix in "Life Form Lock" mode to remain in the form until the second order. This also enable Ben to distract Princess Attea, though found it a bit disturbing that his mindset as Bullfrag has him having a mutual attraction to Attea. Bullfrag can also jump and is very agile with quick reflexes.


The Incurseans look like anthropomorphic toads. They often make frog sounds.

Male Incurseans have either slim bodies, warty toad-like heads and yellow eyes or larger forms with an even greater toad-like appearance. Genetically optimal male Incurseans, such as Bullfrag, are taller, more muscular, and less warty.

Female Incurseans (judging by the sole female seen so far) look very little like the males. Attea, the only female Incursean seen so far, looked almost completely human in Alien Force, aside from the wart-free green skin, yellow sclera with red pupiled eyes and slightly large mouth.

Milleous and Attea have five fingers on each hand, while all other Incurseans have three fingers.

Ultimate AlbedoEdit

Voiced by:

While the ultimate form of a Galvan, resembling MODOK of the Marvel comics universe with a third eye on his brain exposed head, Ultimate Albedo is a form exclusive to Albedo after he resumed his original form and evolved in "The Ultimate Heist". As shown in "A Fistful of Brains", this form's abilities include lasers beams, levitation, and telekinesis.


Voiced by:

Atomix (From "Atomic") is a robotic-humanoid like alien who uses radiation and atom-based attacks, and is said to be Ben's third strongest transformation, next to Alien X and chromastone. He can create an atomic blast at a particular area and orbs of atomic energy, he has incredible superhuman strength and superhuman durability . He speaks in a highly respectful way, addressing Grandpa Max and Gwen as "grandfather" and "cousin" instead of their names.

Atomix was first mentioned in "Ben 10." He was first seen in "For a Few Brains More" to take down Albedo as Ultimate Humungousaur and Ultimate Spidermonkey. Interestingly, the form was named by Azmuth while his primary brain was removed from his body. Atomix reappears in "The Vampire Strikes Back" to create an orb to destroy Zs'Skayr and hurt Lord Transyl, in which it is revealed that his orb can stay there even when the Omnitrix times out.Atomix was also mentioned in Ken 10.


Voiced by:

Atomic-X is the fusion combination of Alien X and Atomix's DNA. His torso is mainly that of Atomix's, but is Alien X's height and shape. His head is in the shape of Alien X's, with Atomix's eyebrows fused with the middle spike of Alien X's head, and the details from Atomix's chin. His upper body is the shape of Alien X's with details from Atomix. His lower arms are that of Atomix, while his hands have the coloration of Alien X. He has Atomix's belt while it lacks the green, and his legs are that of Alien X with details from Atomix. He wears the Biomnitrix on his chest.


Voiced by:

Skurd is a Slimebiote attached to Ben's Omnitrix. When attached to an alien, he can feed on the alien DNA and is able to grow his host's body parts from himself. When attached to the Nemetrix or Omnitrix, Skurd could grow the body parts of an alien and use it as an armor or new power for himself and the wielder by spreading to their respective body parts and then shifting into another alien's limb or something based on another alien. This allows a sapient wielder to remain sane by not using the Nemetrix directly. Furthermore, Skurd has a high tolerance for Neural Shifts, which prevents him from going insane as well. He is able to give Ben the powers of the other aliens such as a Diamondhead or Armadrillo arm as well as a Bloxx arm cannon.


Voiced by:

Crashocker is the fusion combination of Crashhopper and Shocksquatch's DNA. Crashocker has the chest, torso, and arm structure of Shocksquatch but instead of being yellow, they are brownish-green. His upper head is the same as Crashhopper's and his chin comes from Shocksquatch. He has Crashhopper's legs but with two bolts on each of his feet. He retained Crashhopper's green clothing and abdomen. He has three bolts on his neck and has his throat colored the same as his chin with his horn's design.

The Biomnitrix symbol is located on Crashocker's stomach.


Voiced by:

UpRigg is the fusion combination of Jury Rigg and Upgrade's DNA. UpRigg has the body of Jury Rigg with the circuit pattern of Upgrade. His arms, legs, and stomach are slightly more rounded than Jury Rigg's. Rather than a devil tip, he has a plug on the end of his tail, similar to Feedback's. His ears and nose are longer and pointier.

The Biomnitrix is located on the ring of his eye, which is Upgrade's symbol location.

Big ChuckEdit

Voiced by:

Big Chuck is the fusion combination of Upchuck and Way Big's DNA. He has the basic body of Perk Upchuck with Way Big's details. He has Perk Upchuck's shade of green on Way Big's fins on his head, elbows, and shoulders. The bulbs on his head have turned fin-like. He retains Upchuck's "gills" on the side of his head. He has a white face with a grey top and green sides, back, and neck.

The green part from his neck goes down to his chest. He has black stripes on his arms. His legs are disproportional, being very small thighs and very large calves. He has green Upchuck fingers and toes. He has Way Big's chin eyes.

The Biomnitrix is located on his chest.


Voiced by:

Humungoopsaur is the fusion combination of Goop and Humungousaur's DNA. He has Humungousaur's general body shape with Goop's fingers and spikes and is composed of Goop's slime.

Humungoopsaur wears a white recolored version of Humungousaur's sash across his chest with the Biomnitrix symbol on it. Floating above him is a white version of Goop's Anti-Gravity Projector without the Biomnitrix symbol on it.


Aliens introduced in Ben 10: Omniverse: Galactic MonstersEdit


Voiced by:

Gutrot is a purple-skinned alien in a green suit with a clear view of his stomach, which mixes a variety of gases and chemicals that fires from nozzles on parts of his body the chemicals could kill a human easily. While in this form, Ben has a vast knowledge of complex gases. Gutrot first debuts in "Animo Crackers", learning the range of his abilities from future Animo. During the Galactic Monsters season, he replaces Four Arms in the opening.


Voiced by:

Whampire is a Vladat (a pun on "Vlad the Impaler"), a vampire-like alien. Doing his best thinking while upside-down, Whampire is able to drain the life force of others and use hypnosis and bat-like parasites to control his opponents mentally and physically. He can also fly. One major flaw to the Vladats is that they can be weakened by sunlight. Vladats were originally the ruling race in the Anur system, their leader being the name sake of the system's main planet Anur Transyl, before they became extinct while being remembered as a tyrannical race. During the events of "The Vampire Strikes Back", Ben scanned the Vladat DNA from the resurrected Lord Transyl and even used the parasites to get the info on the whereabouts of Zs'Skayr's castle from Viktor, Crujo, and Kuphulu.

Lord TransylEdit

Voiced by:

  • David Kaye - Ben 10: Omniverse: Galactic Monsters

Lord Transyl is the last of the Vladats, having reigned over Anur Transyl before his death. However, having obtained his hand, Zs'Skayr uses the energies of the Alpha Rune to resurrect Lord Transyl to convince him to join forces to take over Anur Transyl's population while resurrecting the Vladats race to extend their control to the rest of the universe, during the events of "The Vampire Strikes Back". When Zs'Skayr orders Lord Transyl to get Ben Tennyson under his control, Viktor turns against Lord Transyl and the plan fails, followed by Ben using Atomix to defeat Zs'Skayr and Lord Transyl. Afterwards, Lord Transyl is imprisoned by Viktor in a casket stationed to face the sun to keep him in a weakened state.


Voiced by:

  • David Kaye - Ben 10: Omniverse: Galactic Monsters

Unitaur is a humanoid unicorn with a purple/black horn and with pink hair. He has a wheel where his legs are supposed to be. He has medieval shoulder padding and gauntlets. His chest is colored fully green.


Voiced by:

  • David Kaye - Ben 10: Omniverse: Galactic Monsters

Slapstrike is a short, red-skinned alien with black markings on his face. He has silver samurai shoulder and knee pads, and he has black fingerless gloves on his hands with three spikes on them. He has small legs, with white fur on his waist, and has a black and green striped belt attaching the fur to his body. He has several silver bands on his arms and ankles, and he has two yellow horns. The Omnitrix symbol is located on his forehead.

He seems to be modeled after a samurai or a Mongolian warrior. His oversized hands are nearly the size of his torso.

Non-speaking aliens in Ben 10Edit


Diamondmutt is the fusion combination of Diamondhead and Wildmutt's DNA.


XLR-Freak is the fusion combination of XLR8 and Ghostfreak's DNA.


XLR-Wolf is the fusion combination of XLR8 and Blitzwolfer's DNA.


Shellhead resembles a giant turtle.


Ken was greatly disappointed when he heard he had Snakepit in his Omnitrix.


Ken was greatly disappointed when he heard he had Sandbox in his Omnitrix.

Non-speaking aliens in Ben 10: Alien ForceEdit

Voliticus BiopsisEdit

Voliticus Biopsis are blue robotic mosquito/wasp-like creatures with two pairs of wings. They have eyes with black sclera and green pupils. They also have four legs.


Rocks appears to be a yellow, crystalline rock monster. He wears the Omnitrix on his chest.


Squidstrictor is an orange animalistic alien with a jellyfish looking head, green eyes, and a body with multiple tentacles like a squid. The Omnitrix is located on the chest of the torso that connects the tentacles.

Non-speaking aliens in Ben 10: Ultimate AlienEdit

Lucky CloverEdit

Lucky Clover is an alien used to fight bad guys like they shoot lasers at him, he shoots it back at them.

Non-speaking aliens in Ben 10: OmniverseEdit


Crabdozer is a huge, rock-based life form with a crab-like body and a rhino-like face. Crabdozer walks on six crab-like legs and has spikes on her legs. She has a long horn and small ears. Crabdozer has a dark purple/grey color scheme with sunken red eyes.

Crabdozer wears a red spiked collar with the Nemetrix on it.


Buglizard has a white, black and red color scheme, Buglizard has a black head which dons a white patch on each side of her head. Located on these, she has four red eyes, two on one side and two on the other. Buglizard has sharp teeth and the gums protrude in lower jaw. She has a row of red spikes running down her back, which also has a black stripe. Buglizard has four legs and black feet, each ending in three red claws, and a tail with a red-marked tip.

Buglizard wears a red spiked collar with the Nemetrix on it.


Slamworm is a giant worm-like alien with sharp teeth, a wide beak-like mouth, and a tail ending in a pincer like set of spikes. Slamworm possesses a lavender and orange hide, a white underbelly, grey spikes running down her back, and four red insectoid legs on each side near the front.

As with all of Zed's transformations, Slamworm wears a red spiked collar with the Nemetrix on it.


Mucilator appears to be a fat, grey, rock-skinned alien. It has purplish-pink spheres, which are similar in appearance to those of Ultimate Swampfire.

Mucilator wears a red spiked collar with the Nemetrix on it.


Terroranchula is a giant four-legged spider with a body of a silverfish with four pincers with one claw on each and a silver colored exoskeleton, the lower half of her legs and back of her head is covered with light brown hair. Her eyes are red, reptile-like head with an open mouth smile. Terroranchula wears a red spiked collar with the Nemetrix on it.


Tyrannopede has a large, segmented purple and gray body and a red head resembling that of a Carnotaurus or a Tyrannosaurus with a horn on her forehead. Tyrannopede has four legs and six small arms with two clawed fingers on them.

Tyrannopede wears a red spiked collar with the Nemetrix on it.


Hypnotick is a large insectoid creature resembling a bee or moth. It is purplish-grey in color, has sharp fangs, four legs, two sharp teeth, a dual-stinger on her tail, two antennae on her head, and four wings.

Hypnotick wears a red spiked collar with the Nemetrix on it.

Smuggled PsycholeopterranEdit

The Smuggled Psycholeopterran has the same appearance as Hypnotick, being its genetic donor. It looks like a purple overgrown bee with 4 legs. It has 4 wings and 2 antennae. It has 2 large fangs and a dual-stinger.


Omnivoracious is a tall alien that looks like a cross between a Dromaeosaur and multiple large birds. Her body is mostly covered in ruffled, Byzantium purple feathers with her head sporting the most ruffled feathers. The areas that are bald, being the long neck and the area of the legs under the femur, are a pale shade of wisteria purple and have visible horizontal fissures. Her torso represents that of an emu and has a tuff of feathers under the neck.

Her legs are structurally similar to that of an emu but with a longer pair of tarsi and Dromaeosaur-like feet with hook-like 'big toes'. Her feet have three toes along with an inner toe just below each ankle. Each toe ends in black talons. Her arms represent the wings of a hawk. Each arm is equipped with a bat-like hooked finger that shares the same color with the feathers. Her actual tail is quite long compared to a bird's and also terminates in four strips of even longer, streamer-like tail feathers.

Her head and neck highly resemble that of a stork. It has a long, crooked greyish blue beak along with a long, pale teal tongue. The beak also act like gums and holds tiny, almost randomly-placed sharp teeth that are the same color as the beak. The beak itself is textured with small bumps and has four shark fin-like horns with the very front and the second to back being longer than the other two. The beak also has an extension that sports the nostrils and runs up to the back of the scalp. The head has two black indents made from the eye orbits in the skull. Each eye orbit holds two red (naturally green for her species), cat-like eyes with black pupils. The back of the head also holds feathers that are longer than the rest found on the head.

Omnivoracious wears a red, silver-spiked collar at the base of her neck with the Nemetrix on it.


Vicetopus is a large, dark red octopus-like creature with a long body and many long tentacles along her stomach. She has a beaked mouth, two large red eyes and brown spots covering her back.

Vicetopus wears a red spiked collar with the Nemetrix on it.


Panuncian looks like a huge feline with sharp claws, a tail with a sharp hook at the end of it, fangs like a saber tooth tiger, mane like a dire wolf, and a small horn on the top of its nose. It has a lion-like roar. It wears a red spiked collar that holds the Nemetrix.

Ultimate PanuncianEdit

For the most part, Ultimate Panuncian resembles its regular counterpart, save for having grown, its fur being a crimson red, and its head now having armor plating with a larger horn than a regular Panuncian's, with two smaller horns behind it and on the sides. It has larger fangs, and patches of fur appear to be missing, exposing peach colored skin. Spikes grow from its shoulders and back. The spikes and armor plating are identical to Crabdozer's armor.


Fourmungousaur is the fusion combination of Four Arms and Humungousaur's DNA. He has the body of Humungousaur with the features of Four Arms. His skin is two toned like Humungousaur's, but the darker tan is replaced by Four Arms' red. He has four Humungousaur arms with Four Arms' gloves on the hands. On his arms and head, he has Four Arms' spikes.

He has Humungousaur's white belt with a green stripe, along with Four Arms' pants that go above the belt. His feet are Four Arms' with Humungousaur's toe nails. His head is shaped like Four Arms' with his facial features and Humungousaur's nose.

The Biomnitrix is located on his sash.


Matt Wayne described Ventrilosquid as "sort of a telepath".

Bungee SpongeEdit

According to Matt Wayne, Bungee Sponge is powerless or underpowered.

According to Matt Wayne, Bungee Sponge was unlocked when Ben was 11 years old.


ClockSqatch is the fusion combination of Clockwork and Shocksquatch's DNA.


Clocktomix is the fusion combination of Atomix and Clockwork's DNA.

Decagon VreedleEdit

Like all Vreedles, Decagon Vreedle can survive in space.

Echo Ditto Echo DittoEdit

Echo Ditto Echo Ditto is the fusion combination of Ditto and Echo Echo's DNA.


Frankenhead is the fusion combination of Diamondhead and Frankenstrike's DNA.

Freak ChillEdit

Freak Chill is the fusion combination of Big Chill and Ghostfreak's DNA.


Gravadactyl is the fusion combination of Astrodactyl and Gravattack's DNA.


Gutspin is the fusion combination of Gutrot and Terraspin's DNA.


Peskmungodust is the fusion combination of Humungousaur and Pesky Dust's DNA.


Portaler resembles a cross between a turtle and a beetle. He has segmented yellow arms and legs that end in stumps, with blue sleeve-like plating on his shoulders. He has a turtle-like face with sunken green eyes and visible nostrils, and has two beetle-like antennae ending in yellow bulbs. His skin is green, and has a blue, yellow and red circular pattern on his stomach. On his back is a blue, turtle-like shell with a red rim and red rock-like spikes on it.

Portaler wears the Omnitrix on the red armor plate on top of his head.

Space CaptainEdit

Space Captain is the captain of his very own ship in space.


According to Matt Wayne, Skidmarx is a powerless or underpowered alien.

According to Matt Wayne, Skidmarx was unlocked when Ben was 11 years old.


His name is a portmanteau on somnambulism which means to sleep walk and lizard.

According to Matt Wayne, Somnambulizard was unlocked when Ben was 11.

According to Matt Wayne, Somnambulizard is powerless or underpowered

Toe DustEdit

Toe Dust is the fusion combination of Pesky Dust and Toepick's DNA.

Way Big's PredatorEdit

Way Big's Predator is the Nemetrix's DNA sample of an unnamed virus.

Way Big's predator's species is the predatory species of To'kustars.

This predator was only a concept which didn't make it into the show.

Way Big's predator is a virus. It is the smallest life form in the Nemetrix.


XLRG is the fusion combination of NRG and XLR8's DNA.

See alsoEdit

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