Spencer Gordon Bennet
Director
Arthur Hoerl
Screenplay
Earl Turner
Editor
Sam Katzman
Producer
Howard Swift
Animation
George H. Plympton
Screenplay
Jack Erickson
Special Effects
William P. Whitley
Director of Photography
Judd Holdren
Rex Barrow
Vivian Mason
Ella Dorn
Michael Fox
Dr. Ernst Grood
Forrest Taylor
Prof. Edmund Dorn
Gene Roth
Reckov
Ted Thorpe
Tim Johnson
Karl 'Killer' Davis
Karlo
Jack George
Jarva
Frederic Berest
Alden
John Cason
Hopper
Lee Roberts
Wesley Brenn
Nick Stuart
Darl
Joseph Mell
Lah
Pierre Watkin
Ned Hilton
Leonard Penn
Ken Wopler
