Lon Chaney Jr.
— The Mummified Werewolf
Germán Valdés
— Casimiro
Yolanda Varela
— Paquita
Yerye Beirute
— Professor Sebastian
Alfredo Wally Barrón
— Nacho
Agustín Fernández
— Rito
Óscar Ortiz de Pinedo
— Dr. Lorenzo Salazar
Consuelo Guerrero de Luna
— Dr. Salazar's Patient
Rafael Estrada
— Professor Estrada
Dacia González
— Mesera