Cast 18

1. 

   Antonio Cantafora

   Paul

2. 

   José Luis Ayestarán

   Kronos/Supersonic Man

3. 

   Cameron Mitchell

   Dr. Gulik

4. Diana Polakov

   Patricia Morgan / Patricia Gordon

5. 

   José María Caffarel

   Prof. Morgan / Prof. Gordon

6. 

   Frank Braña

   Peterson

7. Javier De Campos

   Drunk

8. Tito García

   George

9. 

   Luis Barboo

   Harrison

10. 

    Quique Camoiras

    Bill

11. 

    Ángel Ter

12. Emilio Higuera

13. Luis Castilla

14. 

    Emilio Fornet

15. 

    Marta Fernández Muro

16. José Antonio Rico

17. Teófilo Martínez

    (voice)

18. Óscar Simón

Crew 16