As Aventuras de Billy e Mandy

Greg Eagles

Grim (voice)

Richard Steven Horvitz

Billy (voice)

Vanessa Marshall

Irwin (voice)

Grey DeLisle

Mandy (voice)

Rachael MacFarlane

Eris / Eris (voice) / Mindy

Phil LaMarr

Dracula / Hector Con Carne / Judge Roy Spleen (voice)

Armin Shimerman

General Skarr

Diedrich Bader

Hoss Delgado / Hoss Delgado (voice)

Maxwell Atoms

Jeff the Spider

Jake Thomas

Nigel Planter

Billy West

Guard / The Nerve / Viper

Jennifer Hale

Gladys / Gladys (voice)

Martin Jarvis

Nergal

John Vernon

Dean Toadblatt

Frank Welker

Boskov / Scooby-Doo (voice)

Dee Bradley Baker

Announcer / Worm

Jane Carr

Pud'n

Henry Gibson

Lord Pain

"Weird Al" Yankovic

Squid Hat

C.H. Greenblatt

Fred Fredburger (voice)

Debi Derryberry

Nergal Jr.

John Kassir

Lord Moldybutt

David Warner

Nergal (voice)

Jeannie Elias

Malaria

Alan Oppenheimer

Father Time

Keone Young

Kwan Ti

Wayne Knight

Jack O'Lantern

Cree Summer

Cave Witch

Scott Menville

Pinocchio

Mary Jo Catlett

Witch

Fred Willard

Boogey

Rob Paulsen

Tooth Fairy

Tom Kane

Professor Utonium

James Arnold Taylor

Fred Flintstone

Nika Futterman

Pandora

Ronnie Schell

Dean Toadblatt

Dawnn Lewis

Grim's Granny

Brian Tochi

Chef

Candi Milo

Grim's Mom (voice)