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The subject of this article has been mentioned only and never actually shown in a comic book or on-screen. Despite their lack of physical appearances, information about them might still be relevant or interesting or at least worthy of documentation. Anything known about them is to be considered second-hand information.

The Joker was an enemy of Batman that was killed by Superman when the former hero went on a seemingly inexplicable killing spree.

When Superman went on an evil murderous killing spree for an unknown reason whether it be mind control or kryptonite. Joker was one of the many heroes and villains murdered in his killing spree. Later on after the Bruce Wayne of that universe became Devastator to kill Superman, the Bruce Wayne of an alternate universe known as The Batman Who Laughs appeared and was briefly confused for Earth -1's Joker.



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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."