Shego is a fictional character and major antagonist from Disney's animated television series Kim Possible, voiced by Nicole Sullivan. The character, ever since her first appearance in the pilot episode, "Crush" appears as Dr. Drakken's sidekick, though in some episodes, she has acted as a mercenary for other villains. She was originally a hero who gained her powers from a rainbow-colored comet that smashed into her childhood tree house, which endowed her and her four brothers, Hego, Mego, and Wego with superpowers and defended Go City against a number of villains as the superhero group Team Go. Shego eventually left the team for reasons that were never fully specified, but anecdotal evidence suggests there were three primary reasons: a fascination with villainy, her crankiness, and irritation with her brothers. At some point, she abandoned her family and their quest for justice for a life as a mercenary-for-hire before becoming Drakken's sidekick.