Cast 18

1. 

   Robert Clarke

   Major William Allison

2. 

   Darlene Tompkins

   Princess Trirene

3. 

   Vladimir Sokoloff

   The Supreme

4. 

   Boyd 'Red' Morgan

   Captain

5. 

   Stephen Bekassy

   Gen. Karl Kruse

6. John van Dreelen

   Dr. Bourman

7. Arianne Ulmer

   Capt. Markova

8. Ken Knox

   Col. Marty Martin

9. 

   Neil Fletcher

   Air Force Chief

10. Jack Herman

    Dr. Richman

11. William Shephard

    Gen. York

12. James 'Ike' Altgens

    Secretary Lloyd Patterson

13. John Loughney

    Gen. Lamont

14. Russ Marker

    Col. Curtis

15. Tom Ravick

    Mutant

16. Don Flournoy

    Mutant

17. Arthur C. Pierce

    Mutant Escaping from Jail (uncredited)

18. Malcolm Thompson

    Guard (uncredited)

Crew 12