Owlman

As a boy, Thomas Wayne Jr. plotted with the family butler, Alfred, to kill his parents, Thomas and Martha Wayne, whom he feared were squandering his inheritance. His younger brother, Bruce, was also killed by Alfred and Thomas to stamp out any weakness in the older boy. As an adult, Thomas would become the brutal Owlman, ruling Gotham City by any means necessary. After the destruction of his world, Owlman traveled to Earth-0 with the Crime Syndicate. He disappeared following the defeat of the Crime Syndicate.