Professor Friend
Educational Consultant
Simon Grim
Funk
Harry
Jack Lessenberry
Rocky (voice)
Poker Player
Pete
Druden Hunt
Isaac
Agent Hopper
Principal Roy
Mike Tappin
Alex Scarvey
Martin
Simple Simon
Kurt Gödel
Voice Actor (voice)
James
Roy
Sweetie
Bill Gates
Glen
Gordon
Rennie Davis / Richard Schultz (voice)
Dr. Cooper Whitehead, Ph.D.
Robert Crumb
Lionel
Grand View High School Principal
Himself
Victor Simmons
Fisher
Danny
Doll Zero
Kirby
Eustance the Boss
Rev. Boxley Fryer
Dr. Besman
Heinrich Himmler
Sir Broderick / Male Workman 1 / Male Workman 2 (voice)
Ernst
Voice
Dave Fisher
Confused Fan (voice)
Proprietor Isaac
Gus Lobrano
The Agent
Dr. Kincaid, Rose's Father
Mr. Pritchett
Lab Technician
Sadie's Manager
Agent Marcus Strang
Concierge
True Believer
Olivier Di Santo
Dr. James Pearn
The Dark One
Irv Merlin
Professor Anthony
Lewis Croshere
Bram
Dr. Venture / Phantom Limb / Jonas Venture Jr. (voice)
Nick
Rod Flexner
Lazlo Valentin / Professor Pyg (voice)
Mr. Enright
Gallery owner
Wade Donato
Damon Lafleur
Imp
Cafe Manager
Dr. Roger Stern
Mr. Blakeney
Rolf
Aaron Kalinoski
The Wizard
Dr. Venture (voice)
Miles Van Ert
Lemur #1 (voice)
Walter Morgan
Richard Simmons
Daniel Grubstick
James Miller
Buster
Walter Morgan / John Fox
Backstage Manager
Grant Grunderschmidt
Tom
Judge Bernard Temple
Maaldorian Doctor
Nose Picker Fish (voice)
Future Doctor
Arthur Tack
Thriffith (voice)
Norm Wakely
(voice)
Dr. Leo Demopoulos
Mike Sylva
Henrik Habersteam
Owen Quinn
Interviewer
M-OC (voice)
M-OC / Imperial Ensign (voice)
M-OC / Sgt. Corcillo (voice)
Sarkissian
Howard Pine
Nick Lingeman
Palm Royale Manager
Self
Larry
Pierce Hamilton
Roman Soldier
Stevie
Rat King / Leaf Beard
Vice President Blowfish
Gavin Donahue
Dr. Toodles (voice)
The Trinket Man
Ophthalmologist