Todd Phillips Eyeing Lady Gaga To Join Joaquin Phoenix As Harley Quinn in Musical 'Joker' Sequel. 'Joker: Folie à Deux' will be a musical. Lady Gaga is in talks to play Harley Quinn in Todd Phillips's 'Joker' sequel.
‘Joker’ Tops Box Office With Over $ 1 Billion: ‘Joker 2’ Already In the Making? This Warner Brothers movie becomes the first R-rated movie to make $1 billion at the box office.