Brendan Gleeson, known for films like In Bruges and Paddington 2, has reportedly joined the cast of Joker: Folie à Deux.
The upcoming film is a "musical" follow-up to the Todd Phillips-directed anti-hero character study "Joker", which was released in 2019.
Phillips' original 2019 film 'Joker' became a box office phenomenon grossing just over $1 billion worldwide to become the highest-grossing R-rated movie in history.
Last week, the filmmaker confirmed the sequel to "Joker", which also revealed that Joaquin Phoenix, who played the titular character in the Warner Bros/DC film is expected to reprise his role.
Director Todd Phillips has officially confirmed the sequel to his hit psychological drama Joker.
Phillips unveiled the cover of the script, written by him and Scott Silver, with the title "Joker: Folie a Deux".
Filmmaker Martin Scorsese's untitled "Joker" origin film is scheduled to start production in May.
Actress Margot Robbie wants to see the relationship between her character Harley Quinn and actor Jared Leto's Joker "end in flames".