Arthur Fleck, later known as the Joker, is the titular protagonist villain and the main antagonist of the 2019 psychological comic book thriller film of the same name and its upcoming 2024 sequel, Joker: Folie à Deux; the former is intended as the first installment of the newly launched DC Black film series. A mentally unstable failed comedian who followed his great lack of success and respect, Fleck loses his sanity until he becomes a nihilistic and psychotic criminal known as the "Joker" aiming to create an anarchist mutiny against the rich population of Gotham City and make Gotham smile in his way.