Cast & Crew zu Joker: Folie à Deux
| Arthur Fleck | Joaquin Phoenix | |
| Lee Quinzel | Lady Gaga | |
| Jackie Sullivan | Brendan Gleeson | |
| Maryanne Stewart | Catherine Keener | |
| Sophie Dumond | Zazie Beetz | |
| Paddy Meyers | Steve Coogan | |
| Harvey Dent | Harry Lawtey | |
| Gary Puddles | Leigh Gill | |
| Dr. Victor Liu | Ken Leung | |
| Ricky Meline | Jacob Lofland | |
| Judge Herman Rothwax | Bill Smitrovich | |
| Debra Kane | Sharon Washington | |
| Ernie Bullock | Alfred Rubin Thompson | |
| Young Inmate | Connor Storrie | |
| Music Teacher | Gregg Daniel | |
| Arkham Guard | Mac Brandt | |
| Arkham Guard | George Carroll | |
| Arkham Guard | John Lacy | |
| Arkham Guard | Tim Dillon | |
| E Ward Inmate | Wayne Dehart | |
| E Ward Inmate | Troy Fromin | |
| E Ward Inmate | Ajgie Kirkland | |
| E Ward Inmate | Terrance T.P. Polite | |
| E Ward Inmate | Jimmy Walker Jr. | |
| E Ward Inmate | Toney Wilson | |
| Dr. Louise Beatty | June Carryl | |
| Paddy Myers' Producer | Don McManus | |
| Head Bailiff | G.L. McQueary | |
| Jury Foreman | Angela D. Watson | |
| White Chapel Minister | Murphy Guyer | |
| Junior Associate | Carson Higgins | |
| Masked Joker Driver | Gattlin Griffith | |
| Joker Doppelganger | Hudson Oz | |
| Victim's Dad | Ray Lykins | |
| Joker Fan #1 | Will Ropp | |
| Joker Fan #2 | Ashton Moio | |
| Joker Fan #3 | Emilio Rojas | |
| Police Escort | Joe Spinney | |
| Additional Guard | Richard Busser | |
| Additional Guard | Brian Donahue | |
| Additional Guard | Mike Houston | |
| Additional Guard | Jess King | |
| Additional Guard | Jimmy Smagula | |
| Stan L. Brooks | Stephen Stanton | |
| News Anchor | Martin Kildare | |
| Regie |
Todd Phillips |
|
| Buch |
Scott Silver Todd Phillips |
|
| Kamera |
Lawrence Sher |
|
| Schnitt |
Jeff Groth |
|
| Musik |
Hildur Guðnadóttir |
|