Joker Would Lose His Mind Over a Justice League Hero's Final Form

screenrant.com:

While the Joker likes to think of himself as the ultimate jester, poking fun at those who perceive any sense of meaning in the universe, it turns out that title actually belongs to a surprising Justice League antihero. Hopefully, he'll never find out, because if there's one thing the Harlequin of Hate won't accept, it's competition.

Joker considers himself the last word on humor, and finds nothing funnier than what he perceives to be the lies normal people tell to try and force some sort of order on the world around them. It's because of this that he considers Batman — the ultimate enforcer of rules, and yet someone intimately acquainted with the world's true chaos — the perfect straight man, endlessly tormenting the Dark Knight in the hopes of revealing him as a kindred spirit. However, while Joker would like to consider himself the fool to Batman's king (and has even assembled a 'royal court' for the Caped Crusader before), it turns out that the universe actually sees a hero in this role.

Related: Joker's Dark Secret Explains How He Became the Ultimate Supervillain

In The Books of Magic #4, Tim Hunter is being tutored in his mystic potential by Mister E, following lessons from John Constantine and other magical luminaries in the DC Universe. In order to communicate the scope of magic to Timothy, Mister E takes him forward in time, and the two eventually come across the final beings in existence. Patterned after cards in the Tarot, these beings are unsure of their own origins, wondering aloud if they're real or simply the universe reflecting core facets of reality as it folds in on itself. However, to his shock, Tim actually recognizes one of the figures as Justice League Dark's John Constantine, aka the Hellblazer.

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