From 1940 in glorious Black and White comes this Republic serial in 15 episodes.

CRAZED WITH THE LUST TO KILL! A power-mad maniac unleashes a lightning attack on an unsuspecting nation...And finds the Copperhead thirsting for revenge! (original poster) 

A mad scientist named Dr. Satan plots to steal key pieces of technolgy to enable him to build an army of robots based on his prototype to conquer America. The only one standing in his way is Bob Wayne, who fights Satan as the enigmatic Copperhead. Written by Kenneth Chisholm <[email protected]>