Blackhawk
Laska
Chuck
Mr. Case
Olaf (as Don Harvey)
Stan / Boris
Andre
Chop Chop
Bork
Cress
Aller
Dyke
Dr. Rolph [Chs. 4-7]
Hodge [Chs. 11-14]
Hendrickson [Chs. 1-2, 4, 8-9]
Malcolm Smith - Chemist [Ch. 10] (uncredited)
Storage Plant Guard [Ch. 2] / Borrego's Servant [Ch.12] (uncredited)
Police Chief Valdez [Ch. 11] (uncredited)
Jose - Henchman-Guitarist [Chs. 11-14] (uncredited)
The Leader's Secretary [Chs. 1-3, 6, 8,, 15] (uncredited)
Dawson - New Fuel Demonstrator [Chs. 7-8] (uncredited)
Otto Helger - Seaman [Chs. 12-13] (uncredited)
Narrator (voice) (uncredited)
Diego - Border Guard [Ch. 14] (uncredited)
Defense Council Member [Chs. 7-8] (uncredited)
Colonel (uncredited)
Henchman [Chs. 7, 15] / Mexican Motor Cop [Ch. 14] (uncredited)
Henchman [Chs. 7-8] (uncredited)
Mexican Driver [Ch. 11] (uncredited)