The first teaser trailer for Joker has finally arrived and it delivers a whole new perspective on DC's green-haired supervillain. Watch above.

The movie is set to be an origin story, following Arthur Fleck (Joaquin Phoenix), a failed stand-up comedian whose life appears to be one unfortunate event after another: he's abused on the street, hit by a car, mugged, mocked.

"I used to think that my life was a tragedy," Arthur says in the trailer as he transforms into his alter ego, the Joker. "But now I realize it's a comedy."

The trailer is backed by Nat King Cole's "Smile," a wistful track that becomes pretty creepy when paired with Arthur's wild laughter and a shot of fictional psychiatric hospital Arkham Asylum, giving us an indication of the direction the movie will take.

Joker hits theaters on October 4, 2019.