Paul Naschy
Hector Doriani / Alex Doriani / Frankenstein's Monster / Mr. Hyde / Phantom of the Opera / Waldemar Daninsky the Werewolf / Quasimodo / The Devil
Caroline Munro
Carmen
Howard Vernon
Eric
Fernando Hilbeck
Father Damián
J
Joseph Garco
Biker Robber
R
Roberta Kuhn
C
Carmen Plate
Woman
Mariano Vidal Molina
Civil Guard
P
Pascual Marco
T
Tamara Greys
Bridgett
Mabel Ordóñez
Lola
Isabel Prinz
Lorena
N
Nuria Lucas
Robber Girl
Sergio Molina
Adrián (as Serge Mills)
Cris Huerta
Zacarías
E
Emilio A. Pina
Civil Guard 2
Malena Gracia
Woman (uncredited)
C
Chema Gómez
(uncredited)