Warning: Spoilers for Batman '89: Echoes #2!The version of The Joker played by Jack Nicholson in Tim Burton's 1989 Batman movie is back in an entirely new way. The Burton series has received sequels in comic book form (first Batman '89, now the ongoing Batman '89: Echoes), but with Nicholson's Joker falling to his death at the end of the original movie, readers have not expected him to return in these comics.
https://screenrant.com/batman-89-sequel-joker-presence-fear-gotham-city/