Directed by
| René Cardona Jr. | ||
Writing Credits
| René Cardona Jr. | ... | (story) |
| René Cardona Jr. | ... | (screenplay) and |
| Jacques Wilson | ... | (screenplay) |
Cast (in credits order) complete, awaiting verification
| Stuart Whitman | ... | Gringo | |
| Donald Pleasence | ... | Klaus von Blantz | |
| Bradford Dillman | ... | Clark | |
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Sonia Infante | ... | Morimba |
| John Ireland | ... | Priest | |
| Emilio Fernández | ... | Tacho / Paco (as Emilio 'El Indio' Fernandez) | |
| Pedro Armendáriz Jr. | ... | Pablo / Zapata (as Pedro Armendariz) | |
| Jorge Luke | ... | Jairo / Jaime | |
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Ann Sidney | ... | Barbara |
| Clark Jarrett | ... | Dick | |
| Hugo Stiglitz | ... | Riverboat Captain | |
Produced by
| René Cardona Jr. | ... | producer |
Music by
| Mort Garson | ||
Cinematography by
| Daniel López | ... | director of photography: first unit (as Daniel Lopez) |
Editing by
| Earl Watson | ||
Makeup Department
| Bertha Chiu | ... | hair stylist |
| Francisco Jaramillo | ... | hair stylist |
| Elvira Oropeza | ... | makeup artist |
Production Management
| Fidel Pizarro | ... | production manager |
Second Unit Director or Assistant Director
| René Cardona III | ... | second unit director |
| Miguel A. Madrigal | ... | assistant director |
| Roberto Schlosser | ... | assistant director |
Sound Department
| Roberto Camacho | ... | sound |
Special Effects by
| Sergio Jara | ... | special effects |
Camera and Electrical Department
| Raúl Argumedo | ... | still photographer |
| León Sánchez | ... | director of photography: second unit |
Costume and Wardrobe Department
| Alicia Rubio | ... | costumes / wardrobe |
| Noel Taylor | ... | costumes / wardrobe |
Editorial Department
| Alfredo Rosas Priego | ... | editor: second unit (as Alfredo Rosas) |
Music Department
| Mort Garson | ... | conductor |
Script and Continuity Department
| Patricia Luke | ... | script girl |
Additional Crew
| Hnos Gurza | ... | Animal Wrangler |
| Humberto Gurza | ... | animal wrangler |
| Miguel Gurza | ... | animal wrangler |
| Sergio Labat | ... | production assistant |
| Óscar Lancer | ... | production assistant |
| Federico Serrano | ... | production assistant |
| Jacques Wilson | ... | dialogue coach |
| Alfredo Zacarías | ... | assistant to the producer (as Alfredo Zacarias) |