Justin Bieber

Justin Bieber appeared in "Coon vs. Coon & Friends". He was singing his most well-known song "Baby" at a concert until The Coon ordered Cthulhu to kill him, who proceeded to squeeze him between two fingers until his head popped.

Quotes

 * Cartman: "So long Justin Bieber, you little douchebag!"

Trivia

 * Cartman's hatred towards him is a reference to the fact that many people hate Justin Bieber.
 * The way that Justin Bieber dances at his concert is reminiscent of Michael Jackson, especially in the way he grabs his crotch.
 * Although Justin does have a high-pitched voice, the one used in the episode is mockingly much higher.
 * Although he is Canadian, he does not have "the floppy head and beady eyes look" that is traditional to Canadians depicted in South Park. This was likely a deliberate decision to make him look more recognizable. He shares this distinction with numerous other Canadian celebrities on the show.
 * Butters mentioned him in "T.M.I.", stating that he was angry at all the kids in school acting like "little Justin Biebers".