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The Joker is a criminal from The World of Tomorrow who was taken to The World of the Knight and mutated into a monster by Warden Luthor.


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Batman Villains 0003
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Batman Villain(s)
This character, team or organization, has been 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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Superman Villain(s)
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This character has been primarily an enemy of Superman in any of his various incarnations, or members of the Superman Family. This template will categorize articles that include it into the "Superman Villains category."

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