El Santo as Santo

Aarón Rodríguez Arellano as Mil Mascaras

Alejandro Moreno as Blue Demon

Julio Cesar as Julito

Elsa Cárdenas as Lina

Juan Gallardo as Police inspector

Jorge Pinguino as Pinguino

Carlos Suárez as Sr. Gonzalez

Mabel Luna as Museum Visitor / Wife

Yolanda Ponce as Museum Visitor / Santo Admirer

Patricia Ferrer as Alicia

Martha Angelica as Martha Angelica

Carlos León as

Tinieblas as Satan (uncredited)

David Lama as Museum Visitor / Husband