Arthur Fleck zit gevangen in Arkham en is in afwachting van het proces voor de misdaden die hij als Joker heeft begaan. Maar terwijl hij worstelt met zijn gespleten persoonlijkheid, vindt Arthur de liefde en de muziek die altijd al in hem heeft gezeten.
Ja! de film Joker: Folie à Deux is nu beschikbaar om te kijken op Netflix in Nederland.
| Writing | Bill Finger | Characters |
| Writing | Jerry Robinson | Characters |
| Production | Joseph Garner | Producer |
| Writing | Bob Kane | Characters |
| Production | Emma Tillinger Koskoff | Producer |
| Production | Todd Phillips | Producer |
| Editing | Jeff Groth | Editor |
| Production | Georgia Kacandes | Executive Producer |
| Directing | Trevor Tavares | Second Assistant Director |
| Costume & Make-Up | John Damiani | Key Makeup Artist |
| Costume & Make-Up | Jacqueline Fernandez | Makeup Artist |
| Costume & Make-Up | Martina Sykes | Makeup Artist |
| Costume & Make-Up | Mia Bauman | Makeup Artist |
| Costume & Make-Up | Alyssa Morgan | Makeup Artist |
| Costume & Make-Up | Heather Galipo | Makeup Artist |
| Directing | Ryan Robert Howard | Second Assistant Director |
| Directing | David Webb | First Assistant Director |
| Production | Randy Manion | Unit Production Manager |
| Costume & Make-Up | Kay Georgiou | Hair Designer |
| Costume & Make-Up | Mitchell Beck | Key Hair Stylist |
| Production | Georgia Kacandes | Unit Production Manager |
| Directing | Travis Rehwaldt | First Assistant Director |
| Costume & Make-Up | Brian Kinney | Makeup Artist |
| Crew | Brian Machleit | Stunt Coordinator |
| Costume & Make-Up | Jessie Bishop | Makeup Artist |
| Costume & Make-Up | Nicki Ledermann | Makeup Designer |
| Costume & Make-Up | Sweet P. Vaughn | Makeup Artist |
| Writing | Scott Silver | Writer |
| Directing | Todd Phillips | Director |
| Writing | Todd Phillips | Writer |
| Production | Francine Maisler | Casting |
| Art | Rick Chavez | Assistant Property Master |
| Crew | Jason Ruder | Executive Music Producer |
| Sound | Bryan Mendoza | Utility Sound |
| Art | Ken Haber | Location Scout |
| Art | Aaron Hurvitz | Location Scout |
| Camera | Gregory Irwin | First Assistant "A" Camera |
| Sound | Steven A. Morrow | Sound Mixer |
| Sound | Michael Kaleta | Boom Operator |
| Camera | John Reynolds | Best Boy Grip |
| Camera | Lawrence Sher | Director of Photography |
| Costume & Make-Up | Lori DeLapp | Costume Supervisor |
| Costume & Make-Up | Arianne Phillips | Costume Design |
| Production | Michael Uslan | Executive Producer |
| Production | Mark Friedberg | Executive Producer |
| Sound | Hildur Guðnadóttir | Original Music Composer |
| Art | Mark Friedberg | Production Design |
| Art | Michael Thurman | Set Dresser |
| Art | Hogan Lee | Set Designer |
| Art | Noelle King | Set Designer |
| Art | Sarah Contant | Set Designer |
| Art | Sydnie Ponic | Art Direction |
| Writing | Paul Dini | Characters |
| Writing | Bruce Timm | Characters |
| Production | Jason Ruder | Executive Producer |
| Sound | George Drakoulias | Music Supervisor |
| Sound | Randall Poster | Music Supervisor |
| Production | Scott Silver | Executive Producer |
| Crew | Nitasha Bhambree | Stunts |
| Sound | Erik Aadahl | Supervising Sound Editor |
| Crew | Shauna Duggins | Stunts |
| Production | David Webb | Co-Producer |
| Crew | Carson O'Dell | Special Effects |
| Crew | Matthew Bouchard | Special Effects Technician |
| Art | David Meyer | Art Direction |
| Art | Jared Patrick Gerbig | Art Direction |
| Crew | Michael Duenas | Special Effects Technician |
| Production | Firat Averbek | Casting |
| Crew | Marc Tantin | Special Effects Technician |
| Art | Dan Webster | Supervising Art Director |
| Art | Erica Hohf | Art Direction |
| Crew | Taylor Walters | Special Effects Technician |
| Crew | Matthew Lillis | Special Effects |
| Art | Gordon Stotz | Art Direction |
| Crew | Brendon O'Dell | Special Effects Coordinator |
| Sound | Meghan Currier | Music Coordinator |
| Sound | Lady Gaga | Music Consultant |
| Crew | Mallory Thompson | Stunts |
| Visual Effects | Sylvain Chomet | Animation |
| Production | Pete Chiappetta | Executive Producer |
| Production | Andrew Lary | Executive Producer |
| Production | Anthony Tittanegro | Executive Producer |
| Crew | Michael Arnold | Choreographer |
| Production | Justine Conte | Co-Producer |
| Visual Effects | Beverly Abbott | Visual Effects Producer |
| Crew | Colby Lemmo | Stunt Double |
| Crew | Richard Epper | Utility Stunts |
| Crew | Doug Coleman | Stunts |
| Crew | Eliza Coleman | Stunts |
| Crew | Matt Berberi | Stunt Double |
| Crew | Tim Rigby | Stunts |
| Crew | Declan Mulvey | Stunts |
| Sound | Tom Ozanich | Sound Re-Recording Mixer |
| Sound | Dean A. Zupancic | Sound Re-Recording Mixer |
| Crew | Craig Baxley Jr. | Stunts |
| Crew | James M. Halty | Stunts |
| Crew | Colby Lemmo | Stunts |
| Crew | Brian Simpson | Stunts |
| Crew | Brent Fletcher | Stunts |
| Crew | Ross Kohnstam | Stunts |
| Crew | Brett Smrz | Stunts |
| Crew | John Branagan | Stunts |
| Crew | Wayne Dalglish | Stunts |
| Crew | Andy Gill | Stunts |
| Crew | Daniel Leavitt | Stunts |
| Crew | Rhys Millen | Stunts |
| Crew | Jake Swallow | Stunts |
| Crew | Tim Trella | Stunts |
| Crew | Ray Lykins | Stunts |
| Sound | Malte Bieler | Sound Designer |
| Sound | Jack Cucci | Foley Mixer |
| Sound | John T. Cucci | Foley Artist |
| Sound | Russell Farmarco | Dialogue Editor |
| Sound | Russell Farmarco | ADR Editor |
| Sound | Dan Gamache | Sound Designer |
| Sound | Jeanne Gilliland | Boom Operator |
| Sound | Tavish Grade | Foley Mixer |
| Sound | Jon Greasley | Dialogue Editor |
| Sound | Darren Maynard | Sound Effects Editor |
| Sound | John-Paul Natysin | Boom Operator |
| Sound | Jason Oliver | ADR Mixer |
| Sound | Dan O'Connell | Foley Artist |
| Sound | Mikel Parraga-Wills | Foley Mixer |
| Sound | Ethan Van der Ryn | Supervising Sound Editor |
| Sound | Ethan Van der Ryn | Sound Designer |
| Art | Karen O'Hara | Set Decoration |
| Art | Lauren Baker | Set Dresser |
| Art | Matt Boucard | Set Dresser |
| Art | Jeremy Cisneros | Set Dresser |
| Art | Mason Chesler | Graphic Designer |
| Art | Wylie Griffin | Assistant Art Director |
| Crew | Amanda Hagy | Scenic Artist |
| Art | Damon Hahn | Set Dresser |
| Art | Stephanie Higgins Frey | Art Department Coordinator |
| Art | Klara Jogalla | Art Department Assistant |
| Art | J.P. Jones | Property Master |
| Art | Maciej Kuciara | Concept Artist |
| Art | David Mauch | Set Dresser |
| Costume & Make-Up | Merdyce McClaran | On Set Dresser |
| Writing | Todd Phillips | Original Film Writer |
| Writing | Scott Silver | Original Film Writer |
| Art | John McElroy | Props |
| Costume & Make-Up | Stephen McGlade | On Set Dresser |
| Art | Marilyn Morgan-Mouneu | Props |
| Art | David Nardoni | Assistant Set Decoration |
| Crew | Tanicia Osuch | Scenic Artist |
| Art | Kristina Parsons | Props |
| Art | Dennis Richardson | Construction Foreman |
| Art | Joel Ruiz | Set Dresser |
| Art | Jessica Santisteban | Set Dresser |
| Art | Jeff Shewbert | Construction Coordinator |
| Art | Justin Simonetti | Set Dresser |
| Art | Benjamin Kimball Smith | Set Dresser |
| Art | Jake Spongberg | Set Dresser |
| Art | Hanna Woltz | Set Dresser |
| Art | Jane Wuu | Set Designer |
| Lighting | Carolina Acero | Lighting Technician |
| Visual Effects | Praveen Allu | Digital Compositor |
| Visual Effects | Jorge Arista | Digital Compositor |
| Visual Effects | Abdullah Azizi | Visual Effects Coordinator |
| Visual Effects | Romero Benitez | Visual Effects Coordinator |
| Visual Effects | Ashleigh Biller | Visual Effects Coordinator |
| Visual Effects | Marlon Victor Bondoc | VFX Artist |
| Visual Effects | Anwei Chen | Visual Effects Producer |
| Visual Effects | Samuel Côté | VFX Artist |
| Visual Effects | Sydney Erbez | Visual Effects Coordinator |
| Crew | Jason Howey | CG Supervisor |
| Visual Effects | Thippabathula Shiva | Visual Effects Supervisor |
| Crew | David Armstrong | Stunts |
| Editing | Jill Bogdanowicz | Other |
| Lighting | Rafael E. Sánchez | Gaffer |
| Camera | Geoffrey Haley | Camera Operator |
| Crew | George B. Colucci Jr. | Stunts |
| Camera | Colin Anderson | Steadicam Operator |
| Camera | Colin Anderson | "A" Camera Operator |
| Crew | Chris Barnes | Stunts |
| Visual Effects | Ivan Moran | Visual Effects Supervisor |
