Jack Napier (Earth-Prime)

"Ever wonder why the Joker hasn't reared his head in five years? He's not in Arkham, Kate."

- Luke Fox to Kate Kane on the death of the Joker

Jack Napier (died 2015) was the criminal known as the Joker who was responsible for terrorising Gotham City until he was finally killed by his archenemy, the Batman.

Early life
At some point, Jack Napier became a talented painter and created a painting that had a subliminal reference to Safiyah Sohail.

Enemy of Batman
He later became the supervillain known as the Joker and the archenemy of Batman.

The Joker was eventually defeated by Batman at some point during an all-out battle against him.

Death
In 2015, the Joker was killed by Batman which led to him leave Gotham City. However, it is widely believed by the general public that he still remains locked up in Arkham Asylum.

Kate Kane's Investigation
In 2020, Kate Kane began an investigation into a painting made by Jack Napier due to it containing a subliminal reference to Safiyah Sohail.

Abilities

 * Artist: Jack was a skilled painter.