Elenco - Howl of the Devil
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
Joseph Garco
Biker RobberCarmen Plate
Woman
Mariano Vidal Molina
Civil GuardTamara Greys
Bridgett
Mabel Ordóñez
Lola
Isabel Prinz
LorenaNuria Lucas
Robber GirlSergio Molina
Adrián (as Serge Mills)
Cris Huerta
ZacaríasEmilio A. Pina
Civil Guard 2
Malena Gracia
Woman (uncredited)Chema Gómez
(uncredited)