So if Zack Snyder hadn’t come along to shoot that extra Justice League material, a Batman/Joker pairing in the DCEU might never have happened.
Granted, the Snyder Cut takes place in an Elseworlds-like reality rather than the main DCEU continuity, but we’re still working with familiar versions of these characters.
Although Ben Affleck’s Batman is taking part in The Flash, it’s looking like the Scarlet Speedster’s solo movie might end up being the swan song for this iteration of the Dark Knight, although that could change.
As for Jared Leto, while there was once a time where his Joker was being lined up to appear in movies like Gotham City Sirens and a Suicide Squad sequel, that no longer appears to be in the cards, and he’s now contributing to the Sony Pictures Universe of Marvel Characters as Morbius.