Directed by
| Juan Piquer Simón | ... | (as J. Piquer Simon) |
Writing Credits
| Sebastian Moi | ... | (screenplay) & |
| Juan Piquer Simón | ... | (screenplay) (as Juan Piquer) |
Cast (in credits order)
| Antonio Cantafora | ... | Paul (as Michael Coby) | |
| Cameron Mitchell | ... | Dr. Gulik (as Cameron Mitchel) | |
 |
José Luis Ayestarán | ... | Kronos / Supersonic (as Richard Yesteran) |
|
|
Diana Polakov | ... | Patricia Morgan / Gordon (as Diana Polakow) |
| José María Caffarel | ... | Prof. Morgan / Gordon (as John Caffarel) | |
| Frank Braña | ... | Peterson (as Frank Brana) | |
|
|
Javier De Campos | ... | Borracho (as Javier Cameos) |
| Tito García | ... | Joe | |
| Quique Camoiras | ... | Bill | |
| Luis Barboo | ... | Harrison | |
| Ángel Ter | ... | Italian Chef | |
|
|
Emilio Higuera | ... | Peterson's Lieutenant (as Emilio Higueras) |
|
|
Luis Castilla | ||
|
|
Frank A. Sánchez | ||
|
|
Emilio Fornet | ... | Bar Drunk |
| Marta Fernández Muro | ... | Waitress (as Marta Fernandez) | |
|
|
José Antonio Rico | ||
|
|
Jesús Millán | ||
|
|
Óscar Simón | ||
| Rest of cast listed alphabetically: | |||
|
|
Teófilo Martínez | ... | Voz de la nave espacial (voice) (uncredited) |
Produced by
| Faruk Alatan | ... | producer |
| Juan Piquer Simón | ... | executive producer |
| Dick Randall | ... | producer |
Music by
| Carlos Attias | ||
| Juan Luis Izaguirre | ||
| Gino Peguri | ||
Cinematography by
| Juan Mariné | ||
Editing by
| Pedro del Rey | ||
Art Direction by
| Francisco Prósper | ||
| Emilio Ruiz del Río | ... | (as Emilio Ruiz) |
Costume Design by
| Gonzalo Gonzalo | ||
Makeup Department
| Carmen Martín | ... | makeup artist |
Production Management
| Víctor Albarrán | ... | assistant unit manager |
| Francisco Ariza | ... | production manager |
Second Unit Director or Assistant Director
| Hermenegildo Romero | ... | assistant director |
Art Department
| Vicente Jesús | ... | plaster/sculptor (uncredited) |
| Jacinto Soria | ... | plasterer (uncredited) |
Sound Department
| Luis Castro | ... | foley artist |
| Enrique Molinero | ... | sound engineer |
Special Effects by
| Juan Piquer Simón | ... | special effects |
| Francisco Prósper | ... | special effects (as F. Prosper) |
| Emilio Ruiz del Río | ... | special effects (as Ruiz) |
Visual Effects by
| Jack Elkoubi | ... | visual effects |
| Carlos J. Santos | ... | optical: rotoscopy |
| Miguel Villafáfila | ... | visual effects |
Camera and Electrical Department
| Ricardo Andreu | ... | camera operator |
| César Cruz | ... | still photographer |
| Fernando Fernández | ... | assistant camera |
| Rafael García Martos | ... | gaffer |
| Alfredo Mayo | ... | camera operator |
| Ramiro Sabell | ... | assistant camera |
Costume and Wardrobe Department
| Carmen Zorrilla | ... | costumer |
Editorial Department
| Blanca del Rey | ... | assistant editor |
| Blanca Rodríguez | ... | assistant editor |
Script and Continuity Department
| Luis Izquierdo | ... | script supervisor |
Additional Crew
| Pancho Alted | ... | production assistant |
| Andrés Santana | ... | production assistant |
| Félix Acaso | ... | voice dubbing (uncredited) |
| Juan Miguel Cuesta | ... | voice dubbing: Emilio Higuera (uncredited) |
| Gloria Cámara | ... | voice dubbing: Diana Poliakov (uncredited) |
| Javier Dotú | ... | voice dubbing: Antonio Cantafora & Richard Yesteran (uncredited) |
| Javier Franquelo | ... | voice dubbing: Luis Barboo (uncredited) |
| Manolo García | ... | voice dubbing: Frank Braña (uncredited) |
| José Guardiola | ... | voice dubbing: Cameron Mitchell (uncredited) |
| Antonio Medina | ... | voice dubbing (uncredited) |
| José Moratalla | ... | voice dubbing: Quique Camoiras (uncredited) |
| Simón Ramírez | ... | voice dubbing (uncredited) |
| Manuel Torremocha | ... | voice dubbing (uncredited) |
