Trey Parker Stan Marsh / Eric Cartman (voice) Matt Stone Various Characters (voice) April Stewart Various Characters (voice) Mona Marshall Sheila Broflovski / Mrs. Tweak / Linda Stotch (voice) Kimberly Brooks Laura Tucker / Linda Black (voice) Jessica Makinson Additional Voices (voice) Vernon Chatman Towelie (voice) Abdullah Saeed Additional Voices (voice) Kyle Richards Self (archive footage) (uncredited) Oprah Winfrey Self (archive footage) (uncredited) Jennifer Howell Bebe Stevens