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.
Nee, helaas is Joker: Folie à Deux nog niet beschikbaar op Netflix in Nederland.
| Writing | Bill Finger | Characters |
| Writing | Bob Kane | Characters |
| Writing | Jerry Robinson | Characters |
| Production | Emma Tillinger Koskoff | Producer |
| Production | Joseph Garner | Producer |
| Production | Todd Phillips | Producer |
| Production | Georgia Kacandes | Executive Producer |
| Editing | Jeff Groth | Editor |
| Costume & Make-Up | Mia Bauman | Makeup Artist |
| Costume & Make-Up | Mitchell Beck | Key Hair Stylist |
| Costume & Make-Up | Jessie Bishop | Makeup Artist |
| Costume & Make-Up | John Damiani | Key Makeup Artist |
| Costume & Make-Up | Jacqueline Fernandez | Makeup Artist |
| Costume & Make-Up | Heather Galipo | Makeup Artist |
| Costume & Make-Up | Kay Georgiou | Hair Designer |
| Costume & Make-Up | Brian Kinney | Makeup Artist |
| Costume & Make-Up | Nicki Ledermann | Makeup Designer |
| Costume & Make-Up | Alyssa Morgan | Makeup Artist |
| Costume & Make-Up | Martina Sykes | Makeup Artist |
| Costume & Make-Up | Sweet P. Vaughn | Makeup Artist |
| Production | Georgia Kacandes | Unit Production Manager |
| Production | Randy Manion | Unit Production Manager |
| Directing | David Webb | First Assistant Director |
| Directing | Trevor Tavares | Second Assistant Director |
| Directing | Travis Rehwaldt | First Assistant Director |
| Directing | Ryan Robert Howard | Second Assistant Director |
| Crew | Brian Machleit | Stunt Coordinator |
| Directing | Todd Phillips | Director |
| Writing | Todd Phillips | Writer |
| Writing | Scott Silver | Writer |
| Production | Francine Maisler | Casting |
| Sound | Bryan Mendoza | Utility Sound |
| Sound | Steven A. Morrow | Sound Mixer |
| Sound | Michael Kaleta | Boom Operator |
| Costume & Make-Up | Lori DeLapp | Costume Supervisor |
| Crew | Jason Ruder | Executive Music Producer |
| Art | Ken Haber | Location Scout |
| Art | Aaron Hurvitz | Location Scout |
| Camera | Gregory Irwin | First Assistant "A" Camera |
| Camera | John Reynolds | Best Boy Grip |
| Art | Rick Chavez | Assistant Property Master |
| Camera | Lawrence Sher | Director of Photography |
| 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 | Sydnie Ponic | Art Direction |
| Art | Sarah Contant | Set Designer |
| Art | Noelle King | Set Designer |
| Art | Hogan Lee | Set Designer |
| Art | Michael Thurman | Set Dresser |
| Writing | Bruce Timm | Characters |
| Writing | Paul Dini | Characters |
| Sound | Randall Poster | Music Supervisor |
| Sound | George Drakoulias | Music Supervisor |
| Production | Scott Silver | Executive Producer |
| Production | Jason Ruder | Executive Producer |
| Crew | Nitasha Bhambree | Stunts |
| Sound | Erik Aadahl | Supervising Sound Editor |
| Crew | Shauna Duggins | Stunts |
| Production | David Webb | Co-Producer |
| Production | Firat Averbek | Casting |
| Art | Jared Patrick Gerbig | Art Direction |
| Art | Erica Hohf | Art Direction |
| Art | David Meyer | Art Direction |
| Art | Gordon Stotz | Art Direction |
| Art | Dan Webster | Supervising Art Director |
| Crew | Matthew Bouchard | Special Effects Technician |
| Crew | Michael Duenas | Special Effects Technician |
| Crew | Matthew Lillis | Special Effects |
| Crew | Brendon O'Dell | Special Effects Coordinator |
| Crew | Carson O'Dell | Special Effects |
| Crew | Marc Tantin | Special Effects Technician |
| Crew | Taylor Walters | Special Effects Technician |
| 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 |
