Directed by
| Umberto Scarpelli | ... | (as R. Nichols) |
Writing Credits (in alphabetical order)
| Sabatino Ciuffini | ... | (screenplay) |
| Ambrogio Molteni | ... | (screenplay) |
| Oreste Palella | ... | (screenplay) |
| Emimmo Salvi | ... | (dialogue) |
| Emimmo Salvi | ... | (screenplay) |
| Umberto Scarpelli | ... | (dialogue) |
| Gino Stafford | ... | (screenplay) |
| Gino Stafford | ... | (story) |
Cast (in credits order) complete, awaiting verification
| Gordon Mitchell | ... | Obro | |
| Bella Cortez | ... | La Principessa Mecede | |
| Roldano Lupi | ... | Il re Yotar | |
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Marietto | ... | Elmos |
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Omero Gargano | ... | Il Vecchio Saggio |
| Mario Meniconi | ... | Il Padre di Obro | |
| Carlo Tamberlani | ... | Padre di Yotar | |
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Luigi Moneta | ... | Il Primo Ministro |
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Ugo Sasso | ... | Il Capitano delle Guardie Nere |
| Renato Terra | ... | Il Giovane Scienzato | |
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Carlo Enrici | ... | Assistente dello scienziato |
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Leopoldo Savona | ... | Danzatore (as Leo Coleman) |
| Furio Meniconi | ... | Egon - Father of Yota | |
| Liana Orfei | ... | Queen Texen | |
| Rest of cast listed alphabetically: | |||
| Alberto Farnese | ... | Musico (uncredited) | |
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Aldo Pedinotti | ... | Kronos il gigante (uncredited) |
Produced by
| Decio Salvi | ... | executive producer |
| Emimmo Salvi | ... | producer |
Music by
| Armando Trovajoli | ||
Cinematography by
| Oberdan Troiani | ... | (as Oberdan Trojani) |
Editing by
| Franco Fraticelli | ||
Production Design by
| Giorgio Giovannini | ||
Set Decoration by
| Giuseppe Ranieri | ... | (as Giuseppe Ranieri CSC) |
Costume Design by
| Giovanna Natili | ||
Makeup Department
| Romolo de Martino | ... | makeup artist |
| Adalgisa Favella | ... | hair stylist |
| Rocchetti | ... | hair stylist |
Production Management
| Franco Di Mauro | ... | production supervisor / unit manager |
| Decio Salvi | ... | general manager |
| Elios Vercelloni | ... | production manager |
Second Unit Director or Assistant Director
| Mario Tota | ... | assistant director |
Art Department
| Sergio Scalia | ... | constructor: special constructions |
Sound Department
| Richard McNamara | ... | dubbing director: English version |
| Alessandro Sarandrea | ... | sound engineer (as Sandro Sarandrea) |
Special Effects by
| Joseph Nathanson | ... | special effects (as Josef Nathanson) |
Stunts
| Bruno Ariè | ... | stunts (uncredited) |
| Enrico Chiappafreddo | ... | stunts (uncredited) |
| Oscar Giustini | ... | stunts (uncredited) |
Camera and Electrical Department
| Cristiano Civirani | ... | still photographer |
| Silvano Mancini | ... | assistant camera |
| Mario Sensi | ... | camera operator |
Costume and Wardrobe Department
| Maria Teresa Morelli | ... | assistant wardrobe |
Editorial Department
| Sergio Fraticelli | ... | assistant editor |
Music Department
| Armando Trovajoli | ... | conductor |
Script and Continuity Department
| Adriana Bellanti | ... | script supervisor |
| Leo Scuccuglia | ... | script supervisor |
Additional Crew
| Leo Coleman | ... | choreographer |
| Luigi Guasco | ... | production secretary |
| John Davis Hart | ... | script: English dubbing |
| Richard McNamara | ... | director: English Dub |
| Ditta Pompei | ... | footwear |
| Bruno Ukmar | ... | fencing master |
| Fiorella Betti | ... | voice dubbing: Liana Orfei (uncredited) |
| Giorgio Capecchi | ... | voice dubbing: Roldano Lupi (uncredited) |
| Emilio Cigoli | ... | voice dubbing: Gordon Mitchell (uncredited) |
| Gualtiero De Angelis | ... | voice dubbing: Omero Gargano (uncredited) |
| Maria Pia Di Meo | ... | voice dubbing: Bella Cortez (uncredited) |
| Bruno Persa | ... | voice dubbing: Carlo Tamberlani (uncredited) |
| Amilcare Pettinelli | ... | voice dubbing: Luigi Moneta (uncredited) |
| Renato Turi | ... | voice dubbing: Furio Meniconi (uncredited) |