Metalocalypse (2006–2013)

Brendon Small

Nathan Explosion / ... 63 episodes, 2006-2013

Tommy Blacha

Toki Wartooth / ... 62 episodes, 2006-2012

Mark Hamill

Senator Stampingston / ... 60 episodes, 2006-2013

Victor Brandt

Vater Orlaag / ... 36 episodes, 2007-2012

Laraine Newman

News Anchor / ... 17 episodes, 2006-2012

George Fisher

Metal Masked Assassin / ... 11 episodes, 2006-2013

Werner Herzog

Ishnifus Meaddle 9 episodes, 2012

Kirk Hammett

Barkeep / ... 6 episodes, 2006-2010

Janeane Garofalo

Abigail Remeltindrinc 5 episodes, 2012

Jon Schnepp

Dr. Gibbits 5 episodes, 2006-2009

James Hetfield

Fan #1 / ... 4 episodes, 2006

Kim B. Petersen

Employee 421 / ... 4 episodes, 2006

Frankie Ingrassia

Rachel / ... 4 episodes, 2008-2012

Silenoz

Dating Agency Director / ... 3 episodes, 2006-2012

Marc Maron

Magnus Hammersmith 3 episodes, 2012

Devin Townsend

Bink Bonk Blammymatazz / ... 3 episodes, 2007-2008

Warrel Dane

Dr. Naniltred Faniltendriten / ... 2 episodes, 2009-2010

Laura Silverman

Grishnack's Assistant / ... 2 episodes, 2006

Scott Ian

Humiliated Participant / ... 2 episodes, 2009

Patton Oswalt

Dr. Bartholomew Grahsrihajul / ... 2 episodes, 2012

Steve Vai

Damien Cornickelson / ... 2 episodes, 2009

Samantha Eggar

Whale 2 episodes, 2012

Chris Elliott

Dr. Commander Vermin Chuntspinkton / ... 2 episodes, 2012

Mark Brooks

Abductor / ... 2 episodes, 2008-2010

Mike Patton

Rikki Kixx 2 episodes, 2008

Marco Minnemann

Abdule Malik 1 episode, 2010

Jeff Loomis

Melward Fjordslorn 1 episode, 2008

Grutle Kjellson

Mr. Gojira 1 episode, 2008

Jack Gibson

Shirtless Member 1 episode, 2010

Dweezil Zappa

Bullied Camper / ... 1 episode, 2012

Drew Pinsky

Dr. Tormindbind Mickmildididindnin 1 episode, 2012

Christopher McCulloch

Dr. Krumpworth Schpunglacia IV, Jr. 1 episode, 2012

Ihsahn

Health Inspector 1 episode, 2008

Tom Hunting

1 episode, 2009

Matt Pike

Tank Top Member 1 episode, 2010

Amber Tamblyn

Trindle 1 episode, 2012

James Urbaniak

Dr. Fsmilejera Irlelwoll 1 episode, 2012

Ben Shepherd

Duncan Hills Coffee Customer / ... 1 episode, 2008

Troy Sanders

DJ Member 1 episode, 2010

Pat Healy

Dr. Richard Reinhold Rnawighiwowpj 1 episode, 2012

Kim Thayil

Ludwig 1 episode, 2012

Cam Pipes

Billy Butterface 1 episode, 2009

Jon Hamm

Captain Slufgyflaysid / ... 1 episode, 2012

Billy Gibbons

Wine Industry Leader 1 episode, 2012

Dino Cazares

Dr. Sepultura 1 episode, 2012

Emilio Márquez

Dethklok's Original Manager / ... 1 episode, 2013