Blue Bettle - Origin

The Blue Beetle had a relatively short career on the radio,
between May and September of 1940. Motion picture and radio actor
Frank Lovejoy was the Blue Beetle for the first 13 episodes,
while for the rest of the shows, the voice was provided by a
different, uncredited actor. The Blue Beetle was a young police
officer who saw the need for extra-ordinary crime fighting. He
took the task on himself by secretly donning a superhero costume
to create fear in the criminals who were to learn to fear the
Blue Beetle's wrath.

The 13-minute segments were usually only two-parters, so the
stories were often more simple than other popular programs, such
as the Superman radio serial.