When Batman sat atop Metron's Mobius Chair in Justice League #42 and asked it the true name of The Joker, his reaction was enough to tell fans that the story, if they decided to tell it, would be big.
Today, at WonderCon, Justice League writer Geoff Johns and artist Jason Fabok revealed that Justice League #50, due out next month, will tell that story.
You can see a piece of teaser art above, featuring art from a number of different Joker artists over the years -- which Johns jokingly begged co-publishers Jim Lee and Dan DiDio not to share.
In the fairly recent past, and as part of this same story, Johns has revealed the true nature of both Darkseid and the Anti-Monitor.
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Batman v. Superman: Dawn of Justice is now playing in theaters.