Cast
Goebel, Gang Scientist / Goebel - Gang Scientist
Rex, the Wonder Horse / Rex - the Wonder Horse
Marco - Sailor-Thug in Officer's Hat
Captain of Dirigible 'California' [Chs. 13-14]
Jim Taylor - Infiltrator [Chs. 10-11]
Clark - Dying Man on Clipper Island
Gang Yacht Capt. Wilson / Wilson - Gang Yacht Captain
Dirigible 'San Francisco' Asst. Radioman [Chs. 1, 11]
Inspector O'Hara [Chs. 10-11]
Dirigible 'San Francisco' Radioman [Chs. 1, 11]
Joe Davis - Intelligence Chief [Ch. 10]
Ellsworth's Male Secretary [Chs. 1, 9-10]
Tollar - Sub Captain (Ch. 2,3,4,10-13 - 14)
Rontree - Sailor-Thug in Stocking Cap
Teekar - Porotu's Chief Henchman
Draker, Island Operations Chief / Draker - Island Operations Chief
Grover - Gang Pilot [Chs. 4-6]
Mercer - Cave Thug at Desk
Fairchild - Captain of Dirigible 'San Francisco' [Chs. 1, 11]
Wallace - Dirigble Henchman [Ch. 13]
Grover's Co-pilot/Agent Ed Varne
Dirigible 'California' Officer [Ch. 14]
Lamar, Headquarters Gang Member [Chs. 1-6] / Lamar - Headquarters Gang Member [Chs. 1-6]
Grover - Gang Headquarters Majordomo [Ch. 12]
Price - Cave Thug in Visor
Eppa the Wrestler / Eppa - the Wrestler
Larkin - Gang Chalkboard Monitor
