John Carter
Ben
Tony
George (as George Dinica)
Jean
Bill Mann
Prof. Luca
Dan
Burt
Fred
Ionescu
Diana Astor
The Boss
Gregory
Michael (as Mihai Vasile Boghita)
Boss' Secretary
The Doctor
Security Chief
(as Salman al-Jawhar)
Judo Fighter
(as Constantin Brânzea)
George (voice) (uncredited)
Ionesco (voice) (uncredited)