Dr. Roger Bentley
John Agar
Adad
Cynthia Patrick
Mole Person
Robert F. Hoy
Joe Abdullah
Yvonne de Lavallade
John Dodsworth
Arthur D. Gilmour
Marc Hamilton
Bob Herron
Kay E. Kuter
James Logan
Billy Miller
Dr. Jud Bellamin
Hugh Beaumont
Joe Rubino
Patrick Whyte
Elinu, the High Priest
Alan Napier
Prof. Etienne Lafarge
Nestor Paiva
Dr. Paul Stuart
Phil Chambers
Nazar
Rodd Redwing
First Officer
Robin Hughes
Eddie Parker
Self (as Dr. Frank C. Baxter)
Frank Baxter
Makeup Artist
Bud Westmore
Director
Virgil W. Vogel
Producer
William Alland
Director of Photography
Ellis W. Carter
Editor
Irving Birnbaum
Screenplay
László Görög
Set Decoration
Russell A. Gausman
Carl J. Lawrence
Hairstylist
Joan St. Oegger
Art Direction
Alexander Golitzen
Robert Emmet Smith
Costume Design
Jay A. Morley Jr.
Original Music Composer
Heinz Roemheld
Hans J. Salter
Herman Stein