Lon Chaney Jr.

The Mummified Werewolf

Yerye Beirute

Prof. Janning

George Mitchell André

Dr. Frederick Munson

Fred Hoffman

Detective Hammond

Rosita Arenas

Ann Taylor (as Rosa Arenas)

Ramón Gay

Dr. Edmund Redding

Alfredo Wally Barrón

Henchman

Chuck Niles

Douglas Banks