- For other uses, see Bill (disambiguation).
In "Insheeption", during Mr. Mackey's dream, Billy threatened to beat Mackey up for telling on him for smoking. During a field trip, he volunteered to be in Mackey's group in order to bully him. However, Stan, who was trapped in Mackey's dream, convinces him to stand up for himself and fight Billy. Shortly before the fight, Billy and his friends were killed by several men who infiltrated Mackey's dream.
Billy has blond hair. He wears a yellow singlet and light green trousers with a black belt.
Billy seems to be violent and extremely vicious, as he was quick to threaten to beat up Mr. Mackey, despite Mackey only looking out for his health.
- ""South Park" Insheeption (TV episode 2010)". IMDb.com.