Brendon Small
Skwisgaar Skwigelf / Pickles the Drummer / Nathan Explosion (82 eps)
Tommy Blacha
Toki Wartooth / William Murderface (voice) (67 eps)
Mark Hamill
Senator Stampingston / Mr. Selatcia (voice) (66 eps)
Victor Brandt
General Crozier / Cardinal Ravenwood (voice) (66 eps)
Malcolm McDowell
Vater Orlaag (voice) (47 eps)
Laraine Newman
News Anchor / Woman (voice) (9 eps)
George Fisher
Metal Masked Assassin (voice) (6 eps)
James Hetfield
Fan #1 (voice) (4 eps)
King Diamond
Employee 421 (voice) (4 eps)
Kirk Hammett
Barkeep (voice) (3 eps)
Jon Schnepp
Additional Voices (voice) (3 eps)
Erkekjetter Silenoz
Yaneemango Indian (voice) (3 eps)
Angela Gossow
Lavona Sucubboso (voice) (3 eps)
Laura Silverman
Rebecca Nightrod (voice) (2 eps)
Devin Townsend
Teenage Fan at Juice Joint (voice) (2 eps)
Simen Hestnæs
Yaneemango Indian (voice) (2 eps)
Jeff Loomis
Mr. Murderface (voice) (1 eps)
Warrel Dane
Sammy Twinskins (voice) (1 eps)
Steve Smyth
Snizzy Bullets (voice) (1 eps)
Andy Richter
J.F. Amarth (voice) (1 eps)
Mike Keneally
Doctor (voice) (1 eps)
Frankie Ingrassia
Rachel / Sucubboso Explosionite (voice) (1 eps)