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As Owlman was returned to his dimension in bondage, the Joker, alongside the other bad guys, were sent to prison. While the two are arguing, Batman manages to trap Joker and Owlman in wax.
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During the fight, he refused to let Owlman kill Batman as it was his “destiny” to do so. Eventfully, however, he joined Owlman when he gave him an opportunity to kill Batman at last. At first, Joker seemed to become good, saving Batman's life and even saving a child from getting killed in the crossfire. In "Game Over for Owlman", Joker teamed up with Batman to defeat Owlman when the villain was upstaging his own crimes.
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