John Carradine

Dr. Charles Conway

Myron Healey

Mark Houston

Allison Hayes

Grace Thomas

Marilyn Buferd

Dr. Sharon Gilchrist

Tor Johnson

Lobo

Arthur Batanides

Danny Green

Sally Todd

Natalie Andries

Harry Fleer

Harry Jedrow

Roy Gordon

Dr. Loren Wright

Guy Prescott

Police Captain George Reagan

Raymond Guth

Police Officer Miller

Paul McWilliams

Police Officer Ed

Gloria Petroff

Screaming Woman

Karl Johnson

Monster in Basement (uncredited)

Harry Wilson

Monster in Basement (uncredited)

Boris Petroff