El Santo

Santo, el Enmascarado de Plata

Norma Mora

Susana Mendoza

Rubén Rojo

Ricardo Carbajal

Roxana Bellini

Gloria Mendoza

Claudio Brook

Dr. Karol

José Luis Jiménez

Professor Galvan

Víctor Velázquez

Inspector Fernandez

Jorge Mondragón

Police Chief

Fernando Osés

Henchman

Nathanael León

Henchman

Concepción Martínez

Anciana encuentra cámara

Myron Levine

Doctor

Cesáreo Cruz

Juan Garza

Beny Galán

Wrestler (as Benny Galan)

Cavernario Galindo

Wrestler

El Tigre del Ring

Wrestler

Victorio Blanco

Velador museo / Museum Caretaker (uncredited)

Vicente Lara

Hombre lobo / Wolf man (uncredited)

Rubén Márquez

Espectador lucha libre (uncredited)

Antonio «Pícoro» Padilla

Ring Announcer (uncredited)