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