Almost everyone, both readers and characters, want to know the origin of The Joker, and DC has finally given readers enough information to figure out who he truly was. While The Joker is one of the most mysterious characters around, he is still just a man and does have a past. While DC has tried to avoid giving direct answers to his identity for a while, they have offered a few hints to his true identity and have even gone further and explained exactly how the Joker became the mysterious maniac that he is today.

https://screenrant.com/who-is-the-joker-true-identity-explained/