Cast
Kenne Duncan
Lt. Lacy
Jack Mulhall
Capt. Rankin
Al Bridge
Dynamo Room Floor Guard
Kenneth Harlan
Reporter at Wade's Lab
Stanley Price
Capt. Martin / Zugg Man
Anthony Warde
Killer Kane
Wheeler Oakman
Lt. Patten
Reed Howes
Capt. Roberts
Carleton Young
Scott
Wade Boteler
Prof. Wade
C. Montague Shaw
Prof. Huer
Eddy Chandler
Captain of Dirigible
Jackie Moran
George 'Buddy' Wade
Lane Chandler
Army Official at Wade's Lab
Frank Ellis
Kane Soldier
David Sharpe
Kane Pilot / Hidden City Sentry / Saturnian Lieutenant
Cyril Delevanti
Saturnian Councilman
Eddie Parker
Council-Room Guard
Buster Crabbe
Buck Rogers
Constance Moore
Wilma Deering
Karl Hackett
Councillor Krenko
John Harmon
Hidden City Air Controller
Theodore Lorch
Kane's Council Member
Guy Usher
Aldar
Henry Brandon
Capt. Laska
William Gould
Air Marshal Kragg