Baby Kal-El crashes into Earth, where he is discovered by Thomas and Martha Wayne. The couple decide to adopt Kal-El, and name him Bruce. One night, Thomas and Martha are gunned down by a mugger. Bruce incinerates the mugger with his heat vision and discovers his superpowers, but it is too late to save his parents. He decides to hide his powers in shame.
Bruce decides to create a secret identity for himself many years later. As the Batman, he begins to brutally strike back at the criminals in Gotham. Meanwhile, criminal Lex Luthor is on the run and is caught in a horribly disfiguring accident. Lex becomes this dimension’s version of the clown prince of crime, The Joker.
Bruce is eventually persuaded by Lois Lane that a more hopeful superhero is needed than his dark, violent Batman persona, giving rise to his new, more heroic identity of Superman.