Greg Eagles

Grim (voice)

Richard Steven Horvitz

Billy (voice)

Grey DeLisle

Mandy (voice)

Vanessa Marshall

Irwin (voice)

Maxwell Atoms

Jeff the Spider (voice)

C.H. Greenblatt

Fred Fredburger (voice)

Quinton Flynn

Acteur

Peter Renaday

Acteur

Earl Boen

Acteur

Mark Hamill

Acteur

Jeff Bennett

Acteur

Clyde Kusatsu

Acteur

Jess Harnell

Acteur

Jeannie Elias

Malaria

Alan Oppenheimer

Father Time

Keone Young

Kwan Ti

Wayne Knight

Jack O'Lantern

Scott Menville

Pinocchio

Mary Jo Catlett

Witch

Frank Welker

Boskov

Fred Willard

Boogey

Dawnn Lewis

Grim's Granny

Robin Atkin Downes

Acteur

Rob Paulsen

Tooth Fairy

Jane Carr

Pud'n

Brian Tochi

Chef

Diedrich Bader

Hoss Delgado

David Warner

Acteur

Rachael MacFarlane

Eris (voice)

Phil LaMarr

Dracula

Billy West

Viper

James Arnold Taylor

Fred Flintstone

Jennifer Hale

Gladys (voice)

Nika Futterman

Pandora

Martin Jarvis

Nergal

Armin Shimerman

General Skarr

Henry Gibson

Lord Pain

Dee Bradley Baker

Announcer

John Vernon

Dean Toadblatt

'Weird Al' Yankovic

Squid Hat

Candi Milo

Acteur

Tom Kenny

Acteur

Debi Derryberry

Nergal Jr.

Jake Thomas

Nigel Planter

Ronnie Schell

Dean Toadblatt

Tom Kane

Professor Utonium (voice)

John Kassir

Lord Moldybutt

Laraine Newman

Crossing Guard (voice)

Cree Summer

Cave Witch (voice)

R. Lee Ermey

Sergeant / Drill Sergeant

Michael Dorn

King Beardbottom / Clown / Dwarf #2

Jennifer Darling

Pollywinkle (voice)

Malcolm McDowell

Baron Von Ghoulish

Carol Kane

Mrs. Claus

Gilbert Gottfried

Santa Claus

Betty White

Mrs. Doolin (voice)

Jay Gordon

Sick Guy

Susanne Blakeslee

Crabina / Mom #1 (voice)

Chris Cox

Principal Goodvibes (voice)

Julian Stone

Sir Raven / Man (voice)

Dorian Harewood

Burrito/News Reporter (voice)