We still don't know too much about the new non-DCEU movie that will specifically deal with the Clown Prince of Crime. The film is said to be an origin story for Batman's archnemesis (and possible best friend), and it is aptly titled The Joker. Joaquin Phoenix is set to star in the title role, and today he is being joined by another famous face.
According to Deadline, Alec Baldwin has joined the impressive cast, which already includes Robert De Niro, Frances Conroy, Marc Maron, and Deadpool 2's Zazie Beetz. Warner Bros. has not confirmed what character Baldwin will play, but according to Deadline, there is "buzz that Baldwin will play the role of Thomas Wayne." Thomas Wayne is Bruce Wayne's father, and we don't really know how this would work.
The murder of Thomas and Martha (WHY DID YOU SAY THAT NAME???) Wayne is what famously sets Bruce Wayne on his course to becoming the Batman. The comics (and the film Batman Begins) have this being done by a criminal named Joe Chill, but the 1989 Tim Burton-helmed Batman had a young Jack Napier doing the killing. In that film, the gangster Napier would go on to become the Joker.
Will Phoenix's Joker once again gun down the Waynes, or is Thomas Wayne involved in the Joker's origin in some other strange way? This movie could end up having Booster Gold ultimately pull the trigger on the Waynes, for all we know at this point.
Will Baldwin play Thomas Wayne when the Todd Phillips-directed film drops Oct. 4, 2019? Or will he play some other DC character? Will he play someone entirely new? With this movie, it would seem that all of the joker cards are on the table.