Buster Crabbe

Col. Buck Rogers

Constance Moore

Lt. Wilma Deering

Jackie Moran

George 'Buddy' Wade

Anthony Warde

Killer Kane

Jack Mulhall

Capt. Rankin, Hidden City forces

Philson Ahn

Prince Tallen

C. Montague Shaw

Dr. Huer

Guy Usher

Aldar