Does anyone remember Man-Made Monster (1941) a horror film from Universal Pictures, starring Lon Chaney, Jr.?
He survived electrocution that killed all the others in a bus accident where a high power line was hit. Then he was impervious to electric shocks.
Amazingly this was recalled in the comedy The Owl and the Pussycat (1970) where Barbara Streisand retells the plot to George Segal. One of my favorite movies.
There was also an episode of Twilight Zone. I guess it was this one:
https://www.imdb.com/title/tt0734566/?ref_=ttep_ep6