| Person | Type | Job | Role(s) |
|---|---|---|---|
 Ford Beebe | Crew | Directing | Director |
 Paul Huston | Crew | Writing | Screenplay |
 Anne Nagel | Cast | Actress | Misty Gaye |
 Arthur Loft | Cast | Actor | Enemy Sub Capt. Tranker [Ch. 1] |
 Ben Taggart | Cast | Actor | John Blake |
 Claire Dodd | Cast | Actress | Mercedes Colby |
Dirk Thane | Cast | Lt. Cdr. Grady | |
 Don Terry | Cast | Actor | Cmdr. Don Winslow |
 Eddie Polo | Cast | Actor | Taylor's Lab Assistant [Ch. 8] |
 Edward Hearn | Cast | Actor | Lead Henchman at Mill [Ch. 5] |
 Ethan Laidlaw | Cast | Actor | Henchman Spike |
 Frank Lackteen | Cast | Actor | Witch Doctor Koloka [Chs. 6-7] |
Guy Kingsford | Cast | Actor | Sub Capt. Jackson [Chs. 7, 9] |
 Herbert Rawlinson | Cast | Actor | Admiral Warburton [Ch. 1] |
 Iron Eyes Cody | Cast | Actor | Native Henchman at Mill [Ch. 5] |
Irving Mitchell | Cast | Gang Chemist Taylor [Chs. 8-9] | |
 Jack Rockwell | Cast | Actor | Henchman Butch [Ch. 8] |
 Jerry Mandy | Cast | Actor | Tangita Jim [Chs. 2, 10] |
 John Holland | Cast | Actor | Paul Barsac |
 John Litel | Cast | Actor | Spencer Merlin |
Ken Terrell | Cast | Actor | Sam Munn, henchman [Ch. 8] |
 Kenneth Harlan | Cast | Actor | Capt. Holding [Ch. 1] |
 Kurt Katch | Cast | Actor | The Scorpion |
 Lane Chandler | Cast | Actor | Henchman Corley |
 Paul Bryar | Cast | Actor | Saboteur Kramer [Chs. 3-4] |
