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
Editor
Harold Minter
Cliff Bell Sr.
John Daheim
Screenplay
Lynn Perkins
Tom Steele
Albert DeMond
Makeup Artist
Bob Mark
Royal K. Cole
Special Effects
Theodore Lydecker
Basil Dickey
Babe DeFreest
Barney A. Sarecky
Howard Lydecker
Joseph F. Poland
Producer
Ronald Davidson
Director of Photography
Bud Thackery
Original Music Composer
Mort Glickman
Sound
Ed Borschell
Music Director
Richard Cherwin