Susan Lowry
Pier Angeli
Dr. Rick Torres
Kerwin Mathews
Enrique
Richard Cohen
Pedro
Samuel Peloso
The Octaman
Read Morgan
Dr. John Willard
Jeff Morrow
Davido
David Essex
Johnny Caruso
Jerome Guardino
Steve Dodd
Robert Warner
Mort Stein
Norman Fields
Dr. Jameson
Jax Jason Carroll
Carlos
Wally Rose
Raul
Buck Kartalian
Costume Design
Doug Beswick
Rick Baker
Sound
Dick Damon
Makeup Artist
Ron Kinney
Director
Harry Essex
Screenplay
Producer
Michael Kraike
Director of Photography
Robert Caramico
Editor
Robert Freeman
Co-Producer
Production Manager
Set Designer
Bud Costello
George Barr
Special Effects Assistant
Harry Walton
Still Photographer
John Caper Jr.
Assistant Camera
Robert Isenberg
Script Supervisor
Elizabeth Leach