4) WONDERMAN (but not Simon Williams)
The third hero to use his alias in the space of five years, Brad Spencer got his powers by being exposed to a strange, random electrical current. Ably assisted by his girlfriend Carol as Wonder Girl, Brad appeared in comics from a publisher know as Better, Standard or Nedor through 1948. (Nedor is probably best remembered these days as the publisher whose characters became the basis of Alan Moore’s Terra Obscura series; Doc Strange, The Black Terror and others.)