Directed by
| Paul Naschy | ||
Writing Credits
| Paul Naschy | ... | (screenplay) |
| Salvador Sáinz | ... | (screenplay) (uncredited) |
Cast (in credits order)
| 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 | |
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Joseph Garco | ... | Biker robber |
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Roberta Kuhn | ||
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Carmen Plate | ... | Bridget |
| Mariano Vidal Molina | ... | Guardia Civil (as Vidal Molina) | |
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Pascual Marco | ||
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Tamara Greys | ... | Bridget the French student |
| Mabel Ordóñez | ... | Lola | |
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Isabel Prinz | ... | Lorena |
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Nuria Lucas | ... | Robber girl |
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Sergio Molina | ... | Adrián (as Serg Mills) |
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Cris Huerta | ... | Zacarías |
| Rest of cast listed alphabetically: | |||
| Emilio A. Pina | ... | Guardia Civil 2 | |
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Malena Gracia | ... | Mujer (uncredited) |
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Chema Gómez | ... | (uncredited) |
Produced by
| Augusto Boué | ... | producer |
| John Freemont | ... | producer |
| Germán Monzó | ... | producer (uncredited) |
| Paul Naschy | ... | producer |
Music by
| Fernando García Morcillo | ||
Cinematography by
| Julio Burgos | ||
Editing by
| José Antonio Rojo | ||
Art Direction by
| Tony Pueo | ||
Makeup Department
| Fernando Florido | ... | makeup artist |
Production Management
| Emilio A. Pina | ... | assistant production manager |
Special Effects by
| Francisco García San José | ... | special effects |
Camera and Electrical Department
| Juan Antonio Cobo | ... | assistant camera |
| Emilio Ruiz | ... | still photographer |
Editorial Department
| Carlos Rojo | ... | assistant editor |
| Enrique Serrano | ... | assistant editor |
Additional Crew
| Federico Canudas | ... | shooting secretary |
| Fernando Acaso | ... | voice dubbing (uncredited) |
| Félix Acaso | ... | voice dubbing: Paul Naschy in various roles (uncredited) |
| Maripe Castro | ... | voice dubbing (uncredited) |
| José Ángel de Juanes | ... | voice dubbing: Fernando Hilbeck (uncredited) |
| Lucía Esteban | ... | voice dubbing: Caroline Munro (uncredited) |
| Luis María Lasala | ... | voice dubbing: Cris Huerta (uncredited) |
| Arturo López | ... | voice dubbing: Paul as the Phantom of the Opera (uncredited) |
| Teófilo Martínez | ... | voice dubbing: Paul Naschy as Alex Doriani (uncredited) |
| Luis Marín | ... | voice dubbing: Mariano Vidal Molina (uncredited) |
| Laura Palacios | ... | voice dubbing (uncredited) |
| María Luisa Rubio | ... | voice dubbing (uncredited) |
| Pedro Sempson | ... | voice dubbing: Howard Vernon (uncredited) |
| Alicia Sáinz de la Maza | ... | voice dubbing (uncredited) |
| Selica Torcal | ... | voice dubbing: Sergio Molina (uncredited) |
