• Ship's Master Captain Philip Karney is a principled man of action who places mission above personal gain. • First Officer Red Gallagher is a skilled bo'sun and a loyal sidekick to Karney, although the loyalty is suspect for the first few episodes. • Ku Chei Kang, Karney's employer and the financier of the voyage of the Scarlet Queen, appears in only one episode, but figures prominently in episodes 1–21. Kang is the owner of the sprawling international "China Traders, Kang and Sons", offices of which are visited numerous times by Karney in those episodes. • Constantino, a Portuguese crime lord or similar stature villain, is Kang's antagonist and the source of many (but by no means all) of the troubles that befall Karney and the Scarlet Queen. Constantino's many agents appear in the first 20 episodes, but Constantino himself does not appear until episode 21. • Ah Sin is a remarkably obese, delicate, vain, educated and ruthless Chinese trader who speaks "like
Charles Laughton" and surrounds himself with clouds of jasmine perfume. He appears in three episodes. Ah Sin has a sidekick, a Texan named Mangan who carried a pearl-handled frontier pistol. (Ah Sin was the name of an unrelated character in a
Bret Harte poem and later a play by Harte and
Mark Twain that attempted to expose American racist attitudes toward immigrant Chinese laborers in California. See
The Heathen Chinee.) • Henrietta "Hank" Ainley is a love interest of Karney who appears in two episodes. She is acted by
Cathy Lewis, real-life wife of Captain Karney actor Elliott Lewis. • Neilson is the crew member who is mentioned most by name and the only one with any speaking lines. He is voiced by Frank Driscoll in Episode 4 and by
William Conrad in episode 20. Other crew members mentioned in the action include Cronin, Gordon, and Kohler. ==Changes from the pilot to the series==