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