- Ben F. Wilson
- Carter Holmes
- Neva Gerber
- Ruth Stanhope
- William Dyer
- Sandy MacNab
- Howard Crampton
- Dr. Reid Stanhope
- William A. Carroll
- Omar
- Marie Pavis
- Mlle. Zora Ruharde
- Al Ernest Garcia
- Wang
- Harry Archer
- Raoul Bornay
- C.M. Williams
- Aboul Shabistari
- John George
- Borno - The Ape Man
- Charles King
- Henchman
