Suggestions by @anicepairofsmoothcri

Jacob Tremblay

as Ike Broflovski in South Park High School AU

Rowan Atkinson

as Pip Pirrip in South Park High School AU

Pedro Pascal

as Stuart McCormick in South Park High School AU

Brandon Hardesty

as Eric Cartman in South Park High School AU

Mary Elizabeth Winstead

as Wendy Testaburger in South Park High School AU

Brady Corbet

as Craig Tucker in South Park

Simon Pegg

as Mr.Mackey in South Park

Michael Cera

as Butters Stotch in South Park

Terry Gilliam

as Veronica Crabtree in South Park

Terry Gilliam

as Veronica Crabtree in South Park High School AU

Sandra Bullock

as Liane Cartman in South Park

George Clooney

as Sparky in South Park

Simon Pegg

as Mr. Mackey in South Park: Bigger, Longer, & Onstage!

Michael Cera

as Butters Stotch in South Park: Bigger, Longer, & Onstage!

Ryan Reynolds

as Jimmy in South Park

Macaulay Culkin

as Tweek in South Park

Nicole Kidman

as Carol McCormick in South Park

Brady Corbet

as Craig in South Park

Simon Pegg

as Mr. Mackey in South Park

Nicole Kidman

as Carol McCormick in South Park: Bigger, Longer, & Onstage!