Jack Napier (Earth-89)

Jack Napier was a criminal crime lord active in the 1980s in Gotham City. After falling into a chemical tub in Axis Chemicals, he became the psychotic enemy of Batman as the Joker.

Crisis on Infinite Earths
Through some unknown means, the Joker either did not die from his fall or was resurrected afterwards. Prior to the Crisis, the Joker was captured by Batman.

Abilities

 * Genius-level intellect
 * Chemistry

Weaknesses

 * Mental instability

Former Equipment

 * Joy Buzzer
 * Acid Flower
 * Long Barreled Gun
 * Boxing Glove Gun
 * Joker Goon Cars
 * Joker Goon Helicopter
 * Joker Goon Van
 * Smylex
 * Guns
 * BANG Gun