Ray Mala Mala, operative of the United States Intelligence Department undercover as a Pacific Dirigible Airlines radio operator. Mala was a rare non-Caucasian hero in serials. Mamo Clark Princess Melani Herbert Rawlinson Grant Jackson John Ward Anthony Tupper, English Novelist accompanying Agent Mala Selmer Jackson Mr. Canfield John Dilson E.G. Ellsworth George Chesebro Draker, Island Operations Chief Bob Kortman Gang Yacht Capt. Wilson George Cleveland Goebel, Gang Scientist Lloyd Whitlock Lamar, Headquarters Gang Member [Chs. 1-6]