The eagerly awaited sequel, Joker: Folie à Deux, features Joaquin Phoenix reprising his role as Arthur Fleck, with Lady Gaga portraying Harley Quinn, who visits him in a mental institution. The latest clips showcase their unconventional romance, including Gaga's character smearing a clownish grin on Fleck and expressing pride in his influence on the public. The film blends musical elements with its dark narrative, as Arthur awaits trial for murdering talk show host Murray Franklin. Phoenix revealed that he lost around 50 pounds for the role, while Gaga also underwent a transformation to embody her character. Directed by Todd Phillips, the film is set to release in theaters on October 4 and promises a unique take on the Joker mythos, diverging from traditional portrayals of Harley Quinn. The film's success is anticipated following the original's $1.079 billion box office performance.