Little is known about DC’s upcoming The Batman Part II, but a new casting report suggests we might know something about what’s set to happen in the movie. Who is joining The Batman Part II cast? The name Arkham was briefly teased in 2022’s The Batman, with The Riddler being placed in Arkham State Hospital after being caught by Batman. According to a recent report, The Batman 2 — also known as The Batman Part II or The Batman Part 2 — will begin production at Warner Bros. Studios Leavesden in London, United Kingdom, on January 1, 2026. It also says Barry Keoghan is “expected” to return as the Joker, though this has not been confirmed by Warner Bros. Pictures as of yet.