Maurice LaMarche

Tapper (voice)

Mr. Big (voice)

Sir Langsdale (voice)

King (voice)

Tapper (voice)

Dr. Willing / News Anchor (voice)

Kif Kroker (voice)

Walt (voice)

Rico / Additional Voices (voice) (uncredited)

Kif Kroker / Calculon / Hedonismbot / Various (voice)

Gus (voice)

Kif Kroker / Schlump / Various (voice)

Igg the Cow (voice)

Alec Baldwin (voice)

Buddy's Belch (uncredited)

Big Bob Pataki / Head of Security (voice)

Fred Bishop - Simon's Dad on Phone (voice) (uncredited)

Pepe Le Pew (voice)