Directed by
| Spencer Gordon Bennet | ... | (as Spencer G. Bennet) |
| Wallace Grissell | ... | (as Wallace A. Grissell) |
Writing Credits
| George H. Plympton | ... | (written for the screen by) and |
| Royal K. Cole | ... | (written for the screen by) and |
| Arthur Hoerl | ... | (written for the screen by) |
Cast (in credits order)
| Buster Crabbe | ... | Thunda / Roger Drum | |
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Gloria Dea | ... | Princess Pha |
| Leonard Penn | ... | Boris | |
| Jack Ingram | ... | Clark | |
| Rick Vallin | ... | Andreov | |
| Nick Stuart | ... | Degar | |
| William Fawcett | ... | High Priest | |
| Neyle Morrow | ... | Nahee | |
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Bart Davidson | ... | Alexis |
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Rusty Wescoatt | ... | Kor |
| Bernie Gozier | ... | Zahlia | |
| Lee Roberts | ... | Lt. Blake | |
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Alex Montoya | ... | Lipah |
| Frank Ellis | ... | Ivan | |
| Rest of cast listed alphabetically: | |||
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Abdullah Abbas | ... | Rockman (uncredited) |
| Steve Calvert | ... | Gorilla (uncredited) | |
|
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Richard Elmore | ... | Henchman (uncredited) |
| Frank Gerstle | ... | General (uncredited) | |
| Stuart Hall | ... | Military Officer (uncredited) | |
| Frank Matts | ... | Henchman (uncredited) | |
| Merrill McCormick | ... | Rockman (uncredited) | |
|
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Max Reid | ... | Caveman (uncredited) |
| Bert Stevens | ... | Military Officer (uncredited) | |
| Pierre Watkin | ... | Military Officer (uncredited) | |
| Wally West | ... | Henchman (uncredited) | |
Produced by
| Sam Katzman | ... | producer |
Cinematography by
| William P. Whitley | ... | (as William Whitley) |
Editing by
| Earl Turner | ||
Production Management
| Herbert B. Leonard | ... | production manager (as Herbert Leonard) |
Second Unit Director or Assistant Director
| Charles S. Gould | ... | assistant director |
| Arthur Marks | ... | assistant director (uncredited) |
Art Department
| Glenn Cravath | ... | poster artist (uncredited) |
Music Department
| Mischa Bakaleinikoff | ... | musical director |
| Daniele Amfitheatrof | ... | composer: stock music (uncredited) |
| Mischa Bakaleinikoff | ... | composer: stock music (uncredited) |