Self
Leo Steinem
Dr. Brown
Oswald Hinge
Dr. White
Conrad Jarrett (archive footage)
Bruce Komiske
Gabriel
Sidney Kroll
Professor Adams / Subject #30
George McAlpine
Crawford Haines
Richard Ledge
Charlie Bragg
Gary Fields
David Wilder
Thomas Wilson
Mr. Tibbel
Samuel Leibowitz
David Norton
Frank McBride
Matthew Kragen
Bill the Breaker
Paul Gebhard
Ted Milner
Jack Meadows
Larry Sullivan
Isaac Alder
Rod Smolla
Marshall Thompson
Archie Goodwin
Col. William Kent
Frankie
Aldrich Ames
Sam Ellis / John Larkin
Raymond Blossom
Lee Egan
Martin Geldhart
Richard Loving
Willie Conway
Martin Ryan
Charlie
F. Scott Fitzgerald
Thad Beaumont / George Stark
Peter Derns
voice
Tom (Windows)
Al Reilly
Dimitri Sanin
Donnie 'Cake'
Juggler at the Fair (uncredited)
Mike Shea / Elmo Barnett
Jimmy Lynch
Christopher Boyce
Dr. Stanley Shephard
Daniel Isaacson
Cadet Major Brian Moreland
Donald Branch Booth
John Mullen
Conrad Jarrett
Paul Winters
Derek Clayton
Jason Kramer
Tommy Callahan
