The Purple Monster
Roy Barcroft
Craig Foster
Dennis Moore
Charles Mitchell
Kenne Duncan
Helen
Rosemonde James
Dr. Harvey
Monte Hale
Sheila Layton
Linda Stirling
Dr. Cyrus Layton
James Craven
Hodge Garrett
Bud Geary
Marcia
Mary Moore
Emperor of Mars
John Davidson
Carl Stewart
Joe Whitehead
Saunders
Emmett Vogan
Dr. Paul Meredith
George M. Carleton
Stunts
Fred Graham
Carey Loftin
Polly Burson
Director
Spencer Gordon Bennet
Cliff Lyons
Dale Van Sickel
Henry Wills
Fred C. Brannon
Screenplay
Royal K. Cole
Albert DeMond
Basil Dickey
Lynn Perkins
Joseph F. Poland
Barney A. Sarecky
Producer
Ronald Davidson
Editor
Cliff Bell Sr.
Harold Minter
Makeup Artist
Bob Mark
Special Effects
Howard Lydecker
Theodore Lydecker
John Daheim
Babe DeFreest
Tom Steele
Director of Photography
Bud Thackery
Original Music Composer
Mort Glickman
Sound
Ed Borschell
Music Director
Richard Cherwin