- Billet - Farley Granger
- Gaucho - Alex Rocco
- Professor Von Gunther - Damian London
- Stewardess - Julie Bennett
- Man in Street - Bill Dana (uncredited)
Weapons and Gadgets
The cameo appearance by Don Adams' friend Bill Dana as a passerby who doesn't speak Spanish is something of an in-joke given that Dana rose to fame portraying the Mexican character Jose Jimenez including in The Bill Dana Show in which Adams co-starred.