See Lady Gaga as Harley Quinn in 'Joker: Folie à Deux'—and Get Every Detail on the Sequel

Find out the release date, cast, story details and more for 'Joker: Folie à Deux.'

Joker broke box office records for R-rated movies when it came out in October 2019, and Joker 2, officially titled Joker: Folie à Deux, will likely make waves just as big.

While much of the sequel has been kept under wraps, set photos and tidbits teased from Todd Phillips make it clear that Joaquin Phoenix may have met his match in Lady Gaga, who will star as Harley Quinn. Here's everything we know about Joker 2 so far.

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When is Joker 2 coming out?

Joker: Folie à Deux is scheduled to release on Oct. 4, 2024. The film will premiere in theaters and will likely have a full theatrical run before it is available to stream.

Related: How to Watch Every Batman Movie In Order

When is the Joker 2 release date?

Joker: Folie à Deux will release to theaters on Oct. 4, 2024. It does not have a streaming release date yet.

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Is Joker 2 filming?

Joker: Folie à Deux began filming in December 2022, with director Todd Phillips posting a photo of Phoenix in character on Dec. 10, 2022, with the caption, "Day 1. Our boy. #joker." As of March 2023, the film is still in active production.

Where is Joker 2 filming?

Joker: Folie à Deux is filming in Los Angeles; some scenes will also be filmed in New Jersey. In 2018, some Joker scenes were filmed in Newark and Jersey City, New Jersey.

Scenes with Lady Gaga as Harley Quinn were also filmed in New York City in front of a courthouse in late March 2023.

Is there a Joker 2 poster?

An official poster for Joker: Folie à Deux has not been released. One will likely be released closer to the film's release date.

However, one theme of the movie we may expect to see on a Joker 2 poster may be "Free Joker," which was visible on a slew of signs and pins during a scene filmed with Lady Gaga on March 25, 2023.

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Is there a Joker 2 with Joaquin Phoenix?

Joaquin Phoenix is returning for Joker: Folie à Deux. He will once again portray Arthur Fleck as he continues to become the Joker.

Who is in the Joker: Folie à Deux cast?

The confirmed cast for Joker: Folie à Deux includes:

Joaquin Phoenix as Arthur Fleck/The Joker

Joaquin Phoenix will reprise his Oscar-winning role of the mentally ill murderous clown Joker (and his unvarnished alter ego Arthur Fleck).

Related: 150 Joker Quotes

Lady Gaga as Harley Quinn/Harleen Quinzell

Lady Gaga will star as Harley Quinn, whose real name is Dr. Harleen Quinzell. While her story arc in the film isn't yet known, in the comics, she is a psychiatrist who falls in love with the Joker when she treats Arthur Fleck and becomes his literal partner in crime.

We got the first look at Gaga's Harley Quinn in February 2023 when Todd Phillips posted a photo of her with Joaquin Phoenix as Dr. Harleen Quinzell—the pre-Harley Quinn version of the character.

Later, we saw Mother Monster in some of Harley Quinn's stylings.

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Zazie Beetz as Sophie Dumond

Zazie Beetz will return as Sophie Dumond, one of Arthur Fleck's neighbors in his Bronx apartment building. In Joker, he hallucinated that she was his girlfriend, but due to the character's unreliable narration, it's likely that in reality she had only ever met him in passing.

Beetz told The Hollywood Reporter that she's sure Sophie survived the shooting at the end of the first film, explaining, “In my mind, she lives because she never actively wronged Arthur. His victims in the film were generally people that pointedly hurt him. Even within the horror of his realization around his own state of mind, he acknowledges that she’s more of a bystander to his situation than an actor to his situation. So she makes it out unscathed, at least physically.”

Brendan Gleeson

Brendan Gleeson, who was nominated for an Oscar in 2023 for Banshees of Inisherin, will appear in Joker: Folie à Deux. His role has not yet been disclosed. Incidentally, Gleeson's Banshees co-star Colin Farrell played the Penguin in The Batman and will reprise the role in an HBO Max series.

Catherine Keener

Catherine Keener is part of the Joker 2 cast, though her character is not yet known.

Harry Lawtey

British actor Harry Lawtey's role hasn't been disclosed.

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Jacob Lofland

Jacob Lofland will be in Joker: Folie à Deux in a "key role" as an inmate at Arkham Asylum who develops a relationship with Arthur Fleck.

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Is Joker 2 going to be a musical?

Joker: Folie à Deux is rumored to be a musical. The film's composer spoke about shifting to a musical mindset for the sequel during a red-carpet appearance.

Is there a Joker 2 trailer?

There are no trailers for Joker: Folie à Deux yet. The film is still in production and won't release for over a year.

Related: Everything to Know About James Gunn's Superman: Legacy

Is Joker 2 streaming?

Joker: Folie à Deux will be released exclusively in theaters. After its theatrical window, it will likely be available to stream on HBO and HBO Max.

How to stream Joker: Folie à Deux

Joker: Folie à Deux will likely stream on HBO and HBO Max after its theatrical window closes.

Who is playing Harley Quinn in Joker 2?

Lady Gaga has been cast as Harley Quinn in Joker: Folie à Deux. It's unclear how similar the film's version of the character will be to how Harley Quinn is traditionally depicted.

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Will Robert Pattinson be in Joker 2?

Robert Pattinson has not been confirmed to appear in Joker: Folie à Deux. Based on the timeline of the films, it seems unlikely that a fully grown Batman could appear in the film.

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Is Lady Gaga playing Harley Quinn in Joker 2?

Lady Gaga has been cast as Harley Quinn in Joker: Folie à Deux. It's unclear how similar her version of the character will be to the comic book version.

Who is the Joker 2 Batman?

Batman has not been confirmed to appear in Joker: Folie à Deux. The first film portrayed Bruce Wayne as a young boy, and it's unlikely that he'd already have become Batman based on the timeline.

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What is the Joker's real name?

In the film Joker, the character's real name is Arthur Fleck. While he was briefly led to believe he might actually be Thomas Wayne's son, he later discovered that his mother had adopted him and he's unlikely related to the Waynes.

Is Lady Gaga in the new Joker?

Lady Gaga has been cast in Joker: Folie à Deux. She will portray Harley Quinn.

Related: Singing the Joker’s Praises

What mental illness does Joker have in the new movie?

It's unclear what mental illness Arthur Fleck suffers from. It is widely speculated that the character is a depiction of narcissistic personality disorder, but as he is a fictional character, the filmmakers can decide to go in another direction. Some experts speculate he has a psychotic disorder also due to his hallucinations and lack of empathy for his victims.

One disorder we do know for a fact that Arthur Fleck suffers from is pseudobulbar affect, in which someone laughs (or cries) uncontrollably without cause.

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Who becomes the new Joker?

It has not been confirmed that anyone will become a new Joker in the sequel. It is likely that Lady Gaga's Harley Quinn will become a form of her villainous persona and the Joker's ally.

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Who turned into the Joker?

In Joker, Arthur Fleck becomes the titular Joker. It is likely that he will still be living under this identity in the sequel.

Next, find out everything to know about DC Comics' fan-favorite series The Sandman Season 2.