Horror of the Blood Monsters

John Carradine

as Dr. Rynning

Robert Dix

as Dr. Manning

Vicki Volante

as Valerie

Joey Benson

as Willy

Jennifer Bishop

as Lian Malian

Bruce Powers

as Cmdr. Steve Bryce

Fred Meyers

as Bob Scott

Britt Semand

as Linda

Al Adamson

as Earthly Vampire (uncredited)

John Andrews

as Man in Warehouse (uncredited)

John "Bud" Cardos

as Vampire Caveman (uncredited)

Theodore Gottlieb

as Opening Narrator (voice) (uncredited)

Gary Graver

as Earthly Vampire (uncredited)

Sean Graver

as Boy with Mother (uncredited)

Maria Lease

as Girl with Purse (uncredited)

Gus Peters

as Earthly Vampire (uncredited)

Irv Saunders

as Earthly Vampire (uncredited)