The Joker was an insane serial killer and terrorist. One Christmas Eve when he was holding hostages in a grocery store, Batman talked him out of causing any trouble, in doing so reforming him. After this, the Joker was probably tasked by god with giving Bruce the "reward" of seeing what his life would be like if he had chosen Talia over Batman.
In the glimpse
In this glimpse of Batman's, the Joker took his place as Gotham's vigilante. He later explained to Bruce what was happening and gave him a flashlight.
Batman Villain(s) This character, team or organization, is or was primarily an enemy of the Batman, or the Batman Family as a whole. This template will categorize articles that include it into the category "Batman Villains."
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