After the 12-issue limited series Crisis on Infinite Earths, DC Comics rebooted the stories of some major characters in an attempt at updating them for contemporary audiences. Frank Miller retold Batman's origin in the storyline Year One from Batman #404-407, which emphasizes a grittier tone in the character. Though the Earth-Two Batman is erased from history, many stories of Batman's Silver Age/Earth-One career (along with an amount of Golden Age ones) remain canonical in the post-Crisis universe, with his origins remaining the same in essence, despite alteration.
Batman is often treated as a vigilante by other characters in his stories. Frank Miller views the character as "a dionysian figure, a force for anarchy that imposes an individual order". Dressed as a bat, Batman deliberately cultivates a frightening persona in order to aid him in crime-fighting, a fear that originates from the criminals' own guilty conscience. Miller is often credited with reintroducing anti-heroic traits into Batman's characterization, such as his brooding personality, willingness to use violence and torture, and increasingly alienated behavior. Batman, shortly a year after his debut and the introduction of Robin, was changed in 1940 after DC editor Whitney Ellsworth felt the character would be tainted by his lethal methods and DC established their own ethical code, subsequently he was retconned as having a stringent moral code. Miller's Batman was closer to the original pre-Robin version, who was willing to kill criminals if necessary.
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