The film is being produced by Phillips and Bradley Cooper under their Joint Effort banner, and Emma Tillinger Koskoff.
Phillips (The Hangover trilogy) directs from a screenplay he co-wrote with writer Scott Silver (The Fighter), based on characters from DC.
Principal photography has begun on Warner Bros. Pictures’ Joker, starring Oscar nominee Joaquin Phoenix in the title role, alongside Oscar winner Robert De Niro, and directed, produced and co-written by Oscar nominee Todd Phillips.
Joker is set for release October 4, 2019, and will be distributed worldwide by Warner Bros. Pictures.