Stanley "Stan" Marsh is a character from the television show South Park.
He was seen when Bart and Milhouse were watching his show. During the episode an O. J. Simpson riot broke out at Stan's school.
Bart once dressed as him waiting at a bus stop.
Behind the Laughter
Stan Marsh is one of the foul-mouthed, main protagonists in the animated series South Park, with his friends: Eric Cartman, Kyle Broflovski and Kenny McCormick. Stan is voiced by the series co-creator, Trey Parker, in the original TV animated series from real world and Pamela Hayden in his appearance on The Simpsons.