Alvin / Simon (voice) (as Ross Bagdasarian)
Bugs Bunny / Daffy Duck (voice)
Michelangelo / Dad (voice)
Additional Voices (voice)
Tigger / Winnie the Pooh (voice)
The Dealer (voice)
Brainy Smurf (voice)
Theodore (voice)
Michael (voice)
Papa Smurf (voice)
Garfield (voice)
Baby Piggy / Mom (voice)
Corey (voice)
Smoke (voice)
Huey / Dewey / Louie / Baby Gonzo (voice)
Slimer / Baby Kermit / Hefty Smurf (voice)
Self
Gordon 'ALF' Shumway (voice) (uncredited)