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While "The Killing Joke" by Alan Moore has always been one of the 'Go To' comic books for fans of Batman, or comics in general, "Three Jokers" cements "The Killing Joke" into the Batman universe. How so? By taking the ambiguous ending of Moore's master piece and turning the joker into a human being. The joker has always been an idea, chaos to Batman's structure. His identity has never been important. "Three Jokers" gives him an identity. Good or bad, that's up to you.