Barry Judd
Carl Denham
Zeke (voice)
Miles Dumont
JB
Jesus Christ
Bowser (voice)
(Special Appearance)
Lenny (voice)
Roger Davis
Nick Vanderpark
J.D. McNugent
Ian Lamont
Jerry
Paul McCartney (uncredited)
Jeff Portnoy
Lance Brumder
Motorcyclist
Georgie
Self - Presenter
Po (voice)
Tenacious D
Fiedler
Nacho
Pilot
Augie
Hal
Rick
Slip
Satan
Self
Malcolm
Lewis (voice)
Devlin
Private
Lemuel Gulliver
Steve
Zed
Brad Harris
Bernie Tiede
Self (archive footage)
Jack Austin
R.L. Stine
Sherman
Wolfman Jack
Lead Chimney Sweep
Dan Landsman
YouPorn Owner (uncredited)
Dethklok's Original Manager / Fat Fan (voice)
Craig Poncelet
Car Thief
Fisherman (uncredited)
George Washington
Big Tommy
Wasteland Scrap
Billy Glenn Norris
Self - Actor
Sid
Titus Telesco (uncredited)
Professor Sheldon 'Shelly' Oberon
Jack the Elf
Jan Lewan
Dexter
Jonathan Barnavelt
Self - Reader - Declaration of Independence
MCA (B-Boys 2)
R. L. Stine (uncredited)
Broadcast Technician
DJ at Party
Dewey Finn
Sheriff
Marty Prago
Self - Game Master
Grown Up Stan (voice)
Jack Black (uncredited)
Claptrap (voice)
Mental Patient (uncredited)
Himself - actor
Jack Black
Milo (voice)
Jack 'JB' Black
Computerman
Monte
Pusher / Larry Hardcore (voice)
Trapper JB (voice)
Cab Driver
J.D
Self - Guest
Captain Bombardier
Buddy
Alex Talbot
Aspartamay
Jamison Friend
Bart 'Zero' Liquori
William Mulholland
Self - Host
Brad Gunter (voice)
Skinhead
Self - Judge
Dan Ringley
Westley
Self - Contestant
Self - Special Guest
Vincenzo Peruggia
Dr. Isaac Hershberg
Self - Emmys segment
Dan Harmon
The Mayor
The Elegant Hunter
Tommy
Chuck
Nick
Kevin Wilkins
Ray
Randy
Doug
Self - Musical Guest
Expert
Farmer / Satan / God
Gay Guy / Moviegoer
Jeepers Creepers
Curtis Williams
Ludwig van Beethoven
Lithdor (voice)
Self - Cameo (uncredited)
Self / Cop / Story Wizard
Elvis Presley
Joseph Stalin
Host
Sam
Man