Batman and Nightwing are forced to team with the Joker's sometimes-girlfriend Harley Quinn to stop a global threat brought about by Poison Ivy and Jason Woodrue, the Floronic Man.
Unfortunately the movie Batman and Harley Quinn is not yet available on HBO Max.
| Sound | Michael McCuistion | Original Music Composer |
| Sound | Kristopher Carter | Original Music Composer |
| Sound | Lolita Ritmanis | Original Music Composer |
| Production | Amy McKenna | Line Producer |
| Production | Matthew Mahoney | Associate Producer |
| Sound | Mark A. Keatts | Supervising Dialogue Editor |
| Sound | David M. Cowan | Dialogue Editor |
| Sound | David M. Cowan | ADR Editor |
| Sound | Kelly Ann Foley | ADR Editor |
| Sound | Kelly Ann Foley | Dialogue Editor |
| Sound | Patrick J. Foley | ADR Editor |
| Sound | Patrick J. Foley | Dialogue Editor |
| Sound | Michael Garcia | ADR Editor |
| Editing | Darren Griffiths | Online Editor |
| Sound | Michael Garcia | Dialogue Editor |
| Production | Liz Carroll | Administration |
| Production | Bobbie Page | Production Supervisor |
| Production | Ed Adams | Production Manager |
| Writing | Bob Kane | Characters |
| Writing | Bill Finger | Characters |
| Writing | Dan Jurgens | Characters |
| Writing | Bruce Timm | Characters |
| Writing | Marv Wolfman | Characters |
| Writing | George Pérez | Characters |
| Writing | Len Wein | Characters |
| Writing | Bernie Wrightson | Characters |
| Writing | Paul Dini | Characters |
| Directing | Sam Liu | Director |
| Production | Wes Gleason | Casting |
| Editing | Christopher D. Lozinski | Editor |
| Production | Alan Burnett | Co-Producer |
| Production | Bruce Timm | Executive Producer |
| Production | Sam Register | Executive Producer |
| Production | Benjamin Melniker | Executive Producer |
| Production | Michael Uslan | Executive Producer |
| Writing | Bruce Timm | Story |
| Writing | Bruce Timm | Screenplay |
| Writing | James Krieg | Screenplay |
| Sound | Mark A. Keatts | Supervising ADR Editor |
| Production | Leore Berris | Assistant Production Manager |
| Production | Melissa Lohman | Assistant Production Manager |
| Visual Effects | Steven Choi | Character Designer |
| Visual Effects | Will Nichols | Character Designer |
| Art | Art Lee | Prop Designer |
| Art | Norm Ryang | Prop Designer |
| Art | Jay Hong | Background Designer |
| Art | Fedja Jovanovic | Background Designer |
| Art | Pakin Liptawat | Background Designer |
| Art | Chris Copeland | Storyboard Artist |
| Art | Chase Conley | Storyboard Artist |
| Art | Justin Copeland | Storyboard Artist |
| Art | Chrissy Delk | Storyboard Artist |
| Art | Tim Divar | Storyboard Artist |
| Art | Chuck Drost | Storyboard Artist |
| Art | Christina Sotta | Storyboard Artist |
| Art | Ethan Spaulding | Storyboard Artist |
| Art | James Tucker | Storyboard Artist |
| Art | Bruce Timm | Storyboard Artist |
| Art | Emi Yonemura | Storyboard Artist |
| Crew | Matthew Girardi | Supervising Technical Director |
