Steve
Claptrap (voice)
Po (voice)
Bowser (voice)
(Special Appearance)
himself
Wolfman Jack
Grown Up Stan (voice)
Self (archive footage)
Himself
Self - Game Master
Professor Sheldon 'Shelly' Oberon
Sheriff
R. L. Stine (uncredited)
Jack Black / Jables / JB (voice), various (voices)
Jonathan Barnavelt
Professor Sheldon 'Shelly' Oberon
Reader - Declaration of Independence
Jan Lewan
Po (voice)
Po (voice)
R.L. Stine
Dan Landsman
Himself
Self - Actor
YouPorn Owner
Self
Dethklok's Original Manager / Fat Fan (voice)
Himself
Bernie Tiede
Po (voice)
Jack Black (uncredited)
Self (archive footage)
Brad Harris
Po (voice)
MCA (B-Boys 2)
Lemuel Gulliver
Po (voice)
Aspartamay
Zed
Jesus Christ
Jeff Portnoy
Jeff Portnoy
Po (voice)
Jerry
Paul McCartney (uncredited)
Malcolm
Miles Dumont
Nacho
Carl Denham
Presenter
Lenny (voice)
George Washington
Lenny (voice)
Motorcyclist
Nick Vanderpark
Mental Patient (uncredited)
Dewey Finn
Zeke (voice)
Lead Chimney Sweep
Lance Brumder
J.D. McNugent
Barry Judd
Georgie
Fiedler
Titus Telesco (uncredited)
Devlin
Jerry
Ian Lamont
Billy Glenn Norris
Steve
Broadcast Technician
Rick
Tenacious D
Craig Poncelet
Pilot
DJ at Party
Marty Prago
Wasteland Scrap
Augie
Roger Davis
