Joker 2: Folie à Deux has dropped its first trailer ahead of its highly-anticipated release this October.

The upcoming Batman spin-off stars Joaquin Phoenix as the titular supervillain, aka Arthur Fleck, reprising his role as the iconic DC Comics character from the original 2019 film.

Joining him in the sequel is Lady Gaga as Arthur’s psychiatrist Harleen Quinzel, who becomes Joker’s girlfriend and partner-in-crime Harley Quinn.

Returning from the original is director Todd Phillips, who…