According to Comicbook.com, veteran actor Alec Baldwin has joined the cast of Joaquin Phoenix’s Joker origin movie. Baldwin is the latest to board production ahead of the movie’s September 10 shooting start date. Insiders claim the Academy Award-nominated actor will play Thomas Wayne, the doomed father of Bruce Wayne, who is spurred by the murder of his parents to become Batman. The film, which stars Phoenix as the legendary villain, hits theatres on October 4, 2019.