Paul Naschy

Hector Doriani / Alex Doriani / Frankenstein's Monster / Mr. Hyde / Phantom of the Opera / Waldemar Daninsky the Werewolf / Quasimodo / The Devil

Acting

Caroline Munro

Carmen

Acting

Howard Vernon

Eric

Acting

Fernando Hilbeck

Father Damián

Acting

Joseph Garco

Biker Robber

Acting

Roberta Kuhn

Acting

Carmen Plate

Woman

Acting

Mariano Vidal Molina

Civil Guard

Acting

Pascual Marco

Acting

Tamara Greys

Bridgett

Acting

Mabel Ordóñez

Lola

Acting

Isabel Prinz

Lorena

Acting

Nuria Lucas

Robber Girl

Acting

Sergio Molina

Adrián (as Serge Mills)

Acting

Cris Huerta

Zacarías

Acting

Emilio A. Pina

Civil Guard 2

Production

Malena Gracia

Woman (uncredited)

Acting

Chema Gómez

(uncredited)

Acting