Richard Steven Horvitz

as Self

as Alpha (voice)

as Various Characters

as Snap (voice)

as Billy / Mogar / Rodney J. Squirrel (voice)

as Billy (voice)

as Writer

as Moxxie / Crimson (voice)

as Zim (voice)

as Additional Voices (voice)

as Pacifier / Jerry / Bear (voice)

as Stevey Murple (voice)

as Gormal MacGuffin (voice)

as Richie

as Kaos (voice)

as Xemüg (voice) (as Rico Bonet)

as Morpheus (voice)

as Lugosi (voice)

as Imp (voice)

as Alpha 5 (voice)

as Munchkin Suitor (voice)

as Mixadel

as Scrud, Splasho

as Self

as Orange Haired Elf (voice)

as Billy (voice)

as Fryborg / Big Cheese / Salty Pup (voice)

as Grey Matter / Dispatcher (voice)

as Lowe's Salesman #3

as Book Store Autoraph Hound

as Ninja Fish (voice)

as Salmon 2 (voice)

as Portswain (voice)

as Bob Zaiderman

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

as Grey Matter

as Billy / Harold (voice)

as Sheldon Goldstein

as Grey Matter / Stinkfly Prisoner (voice)

as Billy / Billy's Dad (voice)

as Billy / Billy's Dad (voice)

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

as Grey Matter

as Dudley / Guard (voice)

as Waaa Baby

as Grey Matter (voice)

as Billy (voice) (as Richard Horvitz)

as Otis (voice)

as Billy (Voice)

as Alpha 5 (voice) (uncredited)

as Ned Frishman / Guard / Vicious Looking Warrior (voice)

as Ned Frischman (voice)

as Billy/Guy (voice)

as Teddy

as Richard Horowitz

as Aviarius (voice)

as Scooper (voice) (uncredited)

as Billy (voice)

as Additional Character Voices (voice)

as Puppy in Barn (voice)

as Zim (voice)

as Chuck (voice)

as Mitchey Mekelburg (voice)

as Jimmy Osgood (voice)

as Billy (voice)

as Danny

as Cheddar (voice)

as Stonehenge (voice)

as Additional Voices (voice)

as Elevator Passenger

as Beaver #2 / Owl #1 (voice)

as Beaver #2 / Owl #1 (voice)

as Daggett (voice)

as Alpha 5 (voice)

as Demon Team (voice)

as Smaller Chair (voice)

as Duck Head (voice)

as Alpha 5 (voice)

as Alpha 5 (voice)

as Alpha 5 (voice)

as Corny

as Alpha 5 (voice)

as Capricorn (as Richard Stults)

as Alpha 5 (voice)

as Daggett Beaver

as Mark

as Alpha 5

as Alpha 5 (voice)

as Alpha 7 (voice)

as Mantamobile (voice)

as Young Energizer

as Howie Buchanan

as Alan Eakian