Richard Steven Horvitz

as Self

as Alpha (voice)

as Snap (voice)

as Zim (voice)

as Munchkin Suitor (voice)

as Orange Haired Elf (voice)

as Grey Matter / Dispatcher (voice)

as Bob Zaiderman

as Billy / Harold / Pumpkin / Trick-or-Treater Eater (voice)

as Grey Matter / Stinkfly Prisoner (voice)

as Billy / Billybot / Harold / Pale Ghoulish Juror / Chippy the Squirrel (voice) (as Richard Horvitz)

as Billy / Harold (voice)

as Puppy in Barn (voice)

as Alpha 5 (voice)

as Alpha 5 (voice)

as Alan Eakian

as Moxxie (voice)

as Lugosi (voice)

as Kaos (voice)

as Grey Matter (voice)

as Billy (voice)

as Zim (voice)

as Daggett (voice)