The Great Escape of Trap Joker

The Great Escape of Trap Joker was a monumental event in the Jokerverse timeline. There are two Jokers in the Jokerverse who look different, and they are Female Joker and Trap Joker. However, none of the Jokers can tell the difference between Female Joker and Trap Joker.

So the way they combat this issue is to put a necklace on Trap Joker. But, one-day Trap Joker took his necklace off, and Heath Ledger Batman had to get Batman from the DC Universe because he couldn't stand Detective Joker.