- Jack Holt
- Jim Horne
- Julie Bishop
- Joan Hammond
- Dick Purcell
- Bill Kellogg
- James Burke
- Ike Matthews
- Lotus Long
- L-Ana
- Fritz Leiber
- Ti-Ana
- Howard Hickman
- Howard Hammond
- Robert Fiske
- Dr. Butler
- Hector V. Sarno
- Vincente
- Ward Bond
- Radio Operator
- Agostino Borgato
- Elderly Native
- Tom London
- Mechanic
- Frank Orth
- Hammond's Associate
- Julian Rivero
- Martinez - Panama City Official
- Forrest Taylor
- Hammond's Associate
