Elenco - Horror of the Blood Monsters
John Carradine
Dr. RynningRobert Dix
Dr. ManningVicki Volante
ValerieJoey Benson
WillyJennifer Bishop
Lian MalianBruce Powers
Cmdr. Steve BryceFred Meyers
Bob ScottBritt Semand
LindaAl 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)