A movie featuring the Joker and Harley Quinn is reportedly in development, with some outlets suggesting it is a spin-off of the Suicide Squad film. The script for the movie is said to be complete, with writers describing it as a unique blend of dark humor and emotional depth. The project's tone and style are still unclear, with some outlets comparing it to unconventional comedies and others reviewing a musical sequel, possibly titled "Joker: Folie à Deux".