Lady Gaga's casting as Harley Quinn in 'Joker: Folie á Deux' has garnered high praise from casting director Francine Maisler, despite not being her initial choice. Director Todd Phillips selected Gaga, and Maisler has since expressed her surprise and admiration for Gaga's performance, highlighting her ability to hold her own alongside Joaquin Phoenix. The film, set to release on October 4, will be a 'jukebox musical' featuring numerous well-known songs. Gaga emphasized that her portrayal of Harley Quinn is unique and authentic to the film, differing from Margot Robbie's previous interpretations. Robbie herself has supported Gaga's casting, expressing excitement over the diverse directions the character can take.