Prof. Jeff King
Glenda Thomas
Tony Dirken
Burt Winslow
Prof. Millard
Prof. Bryant
Martin Conway
Dr. Graffner
Gunther von Strum
Civil Defense Chairman
Chairman's Aide
Henchman
Old Watchman
Radio Voice
Feature version of the 1949 serial, KING OF THE ROCKETMEN: Young member of scientific group uses new rocket-powered flying suit to thwart shadowy saboteur known only as "Dr. Vulcan".
