Trivia: This film marks Ben Affleck's fourth appearance as Bruce Wayne/Batman (fifth if you count Zack Snyder's Justice League as a separate film). Although his time in the role has been a little fleeting, this technically makes him the actor with the most live action film roles as the character, edging out Christian Bale and Michael Keaton with three each (this film also being Keaton's third appearance).
Trivia: The focus of the marketing and even the release of this film had to be called in to question due to star Ezra Miller being mired in serious legal troubles prior to its release, including assault, harassment, and child grooming.