 Spencer KleinArnold (voice) | Arnold (voice) |
 Francesca Marie SmithHelga Geraldine Pataki (voice) | Helga Geraldine Pataki (voice) |
 Jamil Walker SmithGerald Johanssen / Rasta Guy (voice) | Gerald Johanssen / Rasta Guy (voice) |
 Dan CastellanetaGrandpa 'Steely' Phil / Nick Vermicelli (voice) | Grandpa 'Steely' Phil / Nick Vermicelli (voice) |
 Tress MacNeilleGrandma Gertie 'Pookie' / Mayor Dixie / Red (voice) | Grandma Gertie 'Pookie' / Mayor Dixie / Red (voice) |
 Paul SorvinoScheck (voice) | Scheck (voice) |
 Jennifer Jason LeighBridget (voice) | Bridget (voice) |
 Christopher LloydCoroner (voice) | Coroner (voice) |
 Vincent SchiavelliMr. Bailey (voice) | Mr. Bailey (voice) |
 Maurice LaMarcheBig Bob Pataki / Head of Security (voice) | Big Bob Pataki / Head of Security (voice) |
 Kath SoucieMiriam Pataki / Mona / Reporter (voice) | Miriam Pataki / Mona / Reporter (voice) |
| CChristopher WalbergStinky Petersen (voice) | Stinky Petersen (voice) |
| SSam GifaldiSid (voice) | Sid (voice) |
 Justin ShenkarowHarold Berman (voice) | Harold Berman (voice) |
 Blake McIver EwingEugene Horowitz (voice) | Eugene Horowitz (voice) |
 Olivia HackRhonda Wellington Lloyd (voice) | Rhonda Wellington Lloyd (voice) |
 Anndi McAfeePhoebe Heyerdahl (voice) | Phoebe Heyerdahl (voice) |
 James KeaneMarty Green / Riot Cop (voice) | Marty Green / Riot Cop (voice) |
 Elizabeth AshleyMrs. Vitello (voice) | Mrs. Vitello (voice) |
| MMichael LevinRay Doppel (voice) | Ray Doppel (voice) |
| SSteve VikstenOskar Kokoshka (voice) | Oskar Kokoshka (voice) |
 Dom IrreraErnie Potts (voice) | Ernie Potts (voice) |
 Baoan ColemanMr. Hyunh (voice) | Mr. Hyunh (voice) |
 Craig BartlettMonkeyman (voice) | Monkeyman (voice) |
