Screen Rant

The Joker's fate after The Dark Knight was unknown... 1 / 7

As he wasn't mentioned in The Dark Knight Rises... 2 / 7

Out of respect to Heath Ledger... 3 / 7

But the novelization of the film mentioned him... 4 / 7

Saying he could have been the only inmate left in Arkham Asylum... 5 / 7

And might have escaped during Bane's revolution. 6 / 7

Whatever he did after that remains a mystery. 7 / 7