Horror of the Blood Monsters

John Carradine

Dr. Rynning

Robert Dix

Dr. Manning

Vicki Volante

Valerie

Joey Benson

Willy

Jennifer Bishop

Lian Malian

Bruce Powers

Cmdr. Steve Bryce

Fred Meyers

Bob Scott

Britt Semand

Linda

Al Adamson

Earthly Vampire (uncredited)

John Andrews

Man in Warehouse (uncredited)

John "Bud" Cardos

Vampire Caveman (uncredited)

Theodore Gottlieb

Opening Narrator (voice) (uncredited)

Gary Graver

Earthly Vampire (uncredited)

Sean Graver

Boy with Mother (uncredited)

Maria Lease

Girl with Purse (uncredited)

Gus Peters

Earthly Vampire (uncredited)

Irv Saunders

Earthly Vampire (uncredited)

Al Adamson

Director

Sue McNair

Screenplay

Al Adamson

Producer

Charles McMullen

Executive Producer

Zoe Phillips

Executive Producer

Ewing Miles Brown

Associate Producer

Vilmos Zsigmond

Director of Photography

William G. Troiano

Director of Photography

David L. Hewitt

Special Effects

Mike Velarde

Original Music Composer

Peter Perry Jr.

Editor

Jean Hewitt

Makeup Artist