Madame Foster (voiced by Candi Milo) is a character from Foster's Home for Imaginary Friends.
Madame Foster is the founder of Foster's and is Frankie's maternal grandmother. Even though she is elderly she has childlike, boundless energy and enjoys life to the fullest.
Madame Foster has grey hair and wears glasses, she wears a grean coat with a white shirt underneath. She wears a purple dress, pale peach colored pantyhose and black shoes. She is always seen with a black cane.