Thread:Tupka217/@comment-26127492-20190627035407/@comment-26127492-20190627200816

But what other continuity is Joker set in? With Year One, DC hired Frank Miller to relaunch Batman's post-Crisis origin, which he decided to use as a prequel to his Dark Knight Saga.

With this, it appears that Brian Azzarello wrote an out-of-continuity story in 2009 and then wrote a sequel years later.