User blog comment:UltiVerse/What Might Have Been: Monst3r/@comment-30109486-20170306162306/@comment-28063203-20170306223348

The first major element isn't anything the The Flash (hehe) made. Generator Rex had done that earlier, superheroes origins were basically "hero acquires his powers after exposure to"; the most popular being Spider-Man. The Flash only really popularized this trope. The second one, eh.