One of the most iconic fictional characters in the world, Batman has dedicated his life to an endless crusade, a war on all criminals in the name of his murdered parents, who were taken from him when he was just a child. Since that tragic night, he has trained his body and mind to near physical perfection to be a self-made Super Hero. He's developed an arsenal of technology that would put most armies to shame. And he's assembled teams of his fellow DC Super Heroes, like the Justice League, the Outsiders and Batman, Incorporated.
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.