Jim Marsden
Patricia Harding
Carter / Kane
Yank
Tommy (as Marshall J. Reed)
John Galbraith [Chs. 1, 7, 15]
Dr. Oliver Harding [Chs. 1-4]
Lawson [Ch. 1, 6-7]
Fredrick Vorhees [Ch. 1]
Dranga
Gregg
Snell
Port Captain [Chs. 1, 15]
Constable #2 [Chs. 1,7] / Kassim [Ch. 2] / Henchman Neville [Chs. 6-7] / Cabin thug [Ch. 8] / Radio bomb thug [Ch. 10] Henchman Ronson [Chs. 14-15]
Gold Theft Thug [Ch. 12] / Sailor #1[Chs. 13-14]
Constable #1 [Chs. 1, 7] / Store Thug [Ch. 2] / Radio Bomb Thug [Ch. 10] / Henchman Bert Mead [Chs. 14-15]
Tamil [Chs. 10,11] (as Rico de Montez)
Constable at Vorhees' Office [Ch. 1] (uncredited)
Native (uncredited)
Constable at Cafe [Ch. 7] (uncredited)
Barfly (uncredited)
Henchman Dunning [Ch. 6] (uncredited)
Barfly [Chs. 1, 7] (uncredited)
Henchman (uncredited)
Mine Thug [Chs. 3, 15] / 2nd Bartender [Chs. 6-7] (uncredited)
Man in Suit at Bar [Ch. 1] (uncredited)
Cave Thug #2 [Ch. 7] (uncredited)
Second Ambush Thug [Ch. 3] (uncredited)
Native [Chs. 11-12] (uncredited)
Priest [Ch. 1] (uncredited)
Taola, Tobacco Peddler [Ch. 7] / Sailor [Chs. 13-14] (uncredited)
Native Chief [Chs. 10-11] (uncredited)
1st Bartender [Ch. 1] (uncredited)
Barfly [Ch. 1] (uncredited)
Cave Thug #1 [Ch. 7] (uncredited)