Joker: Folie à deux can finally adapt a famous DC comic book scene that was teased in 2008’s The Dark Knight.

The first Joker is a hard-hitting drama set in a comic book universe. It doesn’t lean into the comic aspects of Gotham City, but it does include notable Batman characters like Thomas Wayne and a young Bruce Wayne. Joker 2 could expand further into DC lore, especially with the addition of Harley Quinn. There may also be several famous villains who could appear while Arthur is locked inside Arkham prison.

As Joker: Folie à Deux nears its release, new images and details are being shared, giving a better look at who else is in the cast. A trailer shared on Instagram by Warner Bros. included a brief glimpse at Harvey Dent, played by Harry Lawtey. Most people know Dent as the District Attorney who transforms into Two-Face, but Joker 2’s version is before his face is scarred beyond repair. However, this gives Joker 2 the perfect opportunity to give audiences Dent’s comic book origins, a moment that was teased but altered by Christopher Nolan in The Dark Knight.