Director/a
Hugo Grimaldi
DIRECTOR/A
Arthur C. Pierce
Reparto (por orden de créditos)
George Nader
Glenn Martin
Barbara Nichols
Gale Wilson
George Macready
Prof. Vaughn Dornheimer
Dolores Faith
Lisa Dornheimer
Hugh Beaumont
Austin Welles
Richard Arlen
Lt. Shaw - National Intelligence
Richard Kiel
Dr. Kolos
John Indrisano
Thor
Ted Durant
The Galaxy Being
Tommy Leonetti
White Reporter
Mel Ruick
Dr. Munson
Walter Maslow
Main Gate Guard
Larry Barton
Johnson
Kim Satana
Dr. Lin Yung
Lori Lyons
Miss Hart
Benito Prezia
Margaret Teele
Blonde Lab Assistant
Alean 'Bambi' Hamilton
Brunette Lab Assistant
John Dasten
ACTOR
Richard Schuyler
William White
Andrew Johnson
Lon Satton
Black Reporteruncredited