Squirrel Girl

Squirrel Girl (real name Doreen Green) is a Marvel comics character, who is shown as a mockery of super heroes mostly.

She appeared in the Ultimate Spider-Man episode, "The Next Iron Spider" voiced by Misty Lee.

Ultimate Spider-Man
She appears in New York, successfully fighting Juggernaut. When Spider-Man confronts her about how not everyone can be a crime fighter, but she said that people can and ran away into the distance.

Powers and Abilities
Squirrel Girl can control squirrels, and make them do her bidding in tough situations.