Not many official details have been revealed about Joker: Folie à Deux’s story; however, the movie’s main change from the original Joker was announced before the sequel went into production. Joker: Folie à Deux will be a musical. That is a first for comic book movies, and given how dark and realistic the first movie in the franchise was, it will be interesting to see just how the musical element will impact the sequel’s tone.
As Joker: Folie à Deux is a musical, it makes sense that Gaga was cast to play Harley Quinn in the movie. The DC newcomer is one of the world’s best actresses and singers, which should help with the franchise’s bold new direction. Based on that and the movie’s title, Harley should play a major role in the sequel.