The Jokester is Jack Napier who was abused as a child by his father, even though exactly what happened is a mystery. To prevent himself from going mad, he decided to use his abuse to motivate himself to become an optimist, and laugh in the face of the horrible.
Bullied and abused in his life, Jack was happiness with the beautiful, loving wife, Jeannie, only to lose her when her split personalities developed. He became a struggling comedian at the Last Laugh comedy club, but then witnessed the club's owner being murdered by the vicious Owlman.
Aftee his wife death, Sick of being bullied, Jackie redesigned his act, focusing all his jokes on Owlman. At some point in his teenaged years, he was taken to an ophanage, and his father was sent to prison after his mother confessed to the police about the abuse. He realized that things can be just if someone were to just speak up. He decided that when he was older, he would become the defender of the innocent. He also met Harleen at this time. Later, he left the orphanage in order to make a living for himself. Aided by his Psychologist and manager Harleen Quinzel, he became a kind of hero to the frustrated Gotham populace for boldly ridiculing every aspect of the thuggish vigilante.
Jack joins the Red Revolution and Jack took chemistry and self-denfense classes to train himself. Using the materials he could find. It was time to bring justice to the streets. The Rogue Group of Red Hood Gang to fight against crime but he fells in vat of Chemicals. After this, The Jokester became depressed, and gave up his career as a heroic Jokester.
Power and Abililties
The Jokester is an expert at chemistry and self-defense. He is also talented at the art of parkour. Also, The Jokester uses a gas gun and gas bombs which causes his opponent to laugh, allowing the Jokester to attack or flee. He also throws cards with metal edges.