Whit Bissell

Prof. Frankenstein

Phyllis Coates

Margaret

Robert Burton

Dr. Karlton

Gary Conway

Bob / Teenage Monster

George Lynn

Sgt. Burns

John Cliff

Sgt. McAffee

Claudia Bryar

Arlene's Mother

Larry Carr

Young Man (uncredited)

Frank McLure

Party Guest (uncredited)

William H. O'Brien

Rooming House Boarder (uncredited)