Directed by
| Juan Ibáñez | ... | (as Jhon Ibanez) |
| Jack Hill | ... | (US scenes) |
Writing Credits (in alphabetical order)
| Jack Hill | ... | (screenplay) |
| Juan Ibáñez | ||
| Luis Enrique Vergara | ||
Cast (in credits order) complete, awaiting verification
| Boris Karloff | ... | Karl Van Molder / Damballah | |
| Julissa | ... | Anabella Vandenberg | |
| Carlos East | ... | Lt. Andrew Wilhelm (as Charles East) | |
 |
Rafael Bertrand | ... | Capt. Pierre Labiche (as Ralph Bertrand) |
| Tongolele | ... | Kalea | |
| Quintín Bulnes | ... | Klinsor (as Quintin Bulnes) | |
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Santanón | ... | Dwarf (as Santanon) |
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Martinique | ||
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Julia Marichal | ... | Mary Ann Vandenberg (as July Marichael) |
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Yol Duhalt | ||
| Rest of cast listed alphabetically: | |||
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Quintin Miller | ... | Gomez (uncredited) |
Produced by
| Juan Ibáñez | ... | producer |
| Luis Enrique Vergara | ... | producer (as Henry Verg) |
Music by
| Alicia Urreta | ... | (as Alice Uretta) |
Cinematography by
| Raúl Domínguez | ||
| Austin McKinney | ... | director of photography |
Editing by
| John Mungea | ||
Art Direction by
| Ray Markham | ||
Set Decoration by
| Robert Vincent O'Neil | ... | (as Bob O'Neil) |
Makeup Department
| Louis Lane | ... | makeup artist |
| Jean Udko | ... | hair stylist: Julissa |
Production Management
| José Luis Cerrada | ... | production manager (as J.L. Cerad) |
| Richard Compton | ... | production supervisor (as Dick Compton) |
Second Unit Director or Assistant Director
| José Luis García de León | ... | assistant director (as Louis G. Leon) |
| Henry von Seyfried | ... | assistant director |
Art Department
| Richard Compton | ... | prop supervisor (as Dick Compton) |
| Jo Anne Jordan | ... | special art designer |
Sound Department
| Heinrich Henkel | ... | sound supervisor |
| F.X. Murphy | ... | dialogue recordist |
| Vic Red | ... | dialogue recordist |
| Ricardo Saldívar | ... | sound recordist (as Richard Saldiv) |
Special Effects by
| Ross Hahn | ... | special effects |
Camera and Electrical Department
| Mindaugus Bagdon | ... | assistant camera (as Bagdon Mindaugis) |
| Ciro | ... | still photographer |
| Frank Ruttencutter | ... | camera operator |
| Jim Enochs | ... | key grip (uncredited) |
| Larry Lapointe | ... | grip (uncredited) |
Costume and Wardrobe Department
| Richard Bruno | ... | wardrobe (as Richard S. Bruno) |
Editorial Department
| J. Gamma | ... | assistant film editor |
| Lilia Lupercio | ... | negative cutter (as Lily Lupers) |
Music Department
| Enrico C. Cabiati | ... | musical director (as Henry Caviatti) |
Script and Continuity Department
| John Buono | ... | script clerk |
Additional Crew
| Richard H. Dunlai | ... | production coordinator |
| Mike Garzon | ... | prompter |
| Raul G. Manjarrez | ... | actor agent (as Raoul G.M.) |
| Jerry Petty | ... | stand-in: Boris Karloff |
| Stillman Segar | ... | dialogue director (as Stim Segar) |
| José Ángel de Juanes | ... | voice dubbing: Boris Karloff- redubbing (uncredited) |
| Fernando De Luis | ... | voice dubbing: Carlos East- redubbing (uncredited) |
| Marta García | ... | voice dubbing: Julissa- redubbing (uncredited) |
| Miguel Ángel Jenner | ... | voice dubbing: Quintín Bulnes- original dubbing (uncredited) |
| Enrique Jordá | ... | voice dubbing- redubbing (uncredited) |
| Luis Posada Mendoza | ... | voice dubbing: Boris Karloff- original dubbing (uncredited) |
| Glòria Roig | ... | voice dubbing: Yolanda Montes- original dubbing (uncredited) |
| María Luisa Solá | ... | voice dubbing: Julissa- original dubbing (uncredited) |
| Albert Trifol | ... | voice dubbing: Rafael Bertand- original dubbing (uncredited) |
| Salvador Vives | ... | voice dubbing: Carlos East- original dubbing (uncredited) |
