Nemesis, (full name, Nemesister), is the main antagonist of the Foster's Home for Imaginary Friends episode "Challenge of the Superfriends" and was created in a situation involving Brother and Sister rivalry of her owner.
Nemesis is the opposite to Imaginary Man, she has a contrast in personality. Her main goal is to conquer the world by
Placing feminine objects around the world and Let only Girls have rights. She seems to be determined, yet cocky when it comes to battling and is more calm when she is at her lair. She is also easily angered, as seen when Uniscorn (Bloo) betrayed her when in the Laundry room.
Nemesis has her body shaped into four hearts.
- Her Hair.
- Her face.
- Her body.
- Her belt on her dress.
Her body and hair is pink and her outfit is black, along with her gloves and boots. She has blue eyes.
Her hair and skin are similair to Gwen's anadite form from "Ben 10."
Nemesis has a few notable abilities as seen in the episode, these include:
- Blasting a shower of roses at her opponent.
- Creating items associated with younger girls, including rainbows.