In the DC Universe, Batman is the alias of Bruce Wayne, a wealthy American playboy, philanthropist, and industrialist who resides in the fictional Gotham City. His origin story features him swearing vengeance against criminals after witnessing the murder of his parents, Thomas and Martha, as a child, a vendetta tempered by the ideal of justice.
Following the Crisis on Infinite Earths and the resulting condensing of the Multiverse, Batman was given a new, streamlined history in the acclaimed storyline “Batman: Year One,” a tale that retroactively took place in the first year of Bruce Wayne’s life as a vigilante.
His secret identity is Bruce Wayne, a rich playboy and philanthropist who swore to fight crime after witnessing his parents' brutal murder. He has served as a member of various teams, including the Justice League, the Justice Society of America, and the Outsiders.