Bart Simpson

Bart Simpson, is the star of The Simpsons, which has been both an inspiration and competitor to South Park.

In the episode, Cartoon Wars Part II, Bart assisted Eric Cartman in his attempt to kill off Family Guy, but later decided to help Kyle in saving the show from Cartman.

Butters hallucinates Dougie looking like Bart Simpson in the episode, Simpsons Already Did It.