Mark Hamill
Senator Stampingston / Mr. Selatcia (voice)
Victor Brandt
General Crozier / Cardinal Ravenwood (voice)
Brendon Small
Skwisgaar Skwigelf / Pickles the Drummer / Nathan Explosion
Tommy Blacha
Toki Wartooth / William Murderface (voice)
Laraine Newman
Liz Bane (voice), TV Host / Sucubboso Explosionite (voice), Pickles' Mom (voice), Nathan's Grandma (voice), News Reporter / Grandma / GMILF (voice), News Anchor / Woman (voice), Serveta Skwigelf / Molly / Rose Explosion (voice), Newscaster (voice)
George Fisher
Angry Customer (voice), Football Player (voice), Hippie (voice), Metal Masked Assassin (voice)
James Hetfield
Fan #1 (voice), Lorkey (voice), Sniper (voice), Troll (voice)
King Diamond
Ronald von Moldenberg (voice), The Blues Devil (voice), Fast Food Restaurant Manager (voice), Employee 421 (voice)
Kirk Hammett
Smoked Fingers fan (voice), Queen of Denmark (voice), Barkeep (voice)
Jon Schnepp
Additional Voices (voice), Dr. Gibbits (voice)
Silenoz
Bobby (voice), Yaneemango Indian (voice), Prison Inmate (voice)
Angela Gossow
Lavona Sucubboso (voice), Lavona Sucubboso / Sucubboso Explosionite (voice)
Laura Silverman
Rebecca Nightrod (voice), Valerie Vransinn / Grishnack's Assistant (voice)
Devin Townsend
Teenage Fan at Juice Joint (voice), Additional Voices (voice)
ICS Vortex
Yaneemango Indian (voice), Mitch (voice)
Frankie Ingrassia
Rachel / Sucubboso Explosionite (voice)