Bruce Wayne, also known by his superhero vigilante alias the Batman, is a fictional character in the DC Extended Universe (DCEU), based on the DC Comics character of the same name. The character was portrayed by Ben Affleck in Zack Snyder's 2016 superhero film Batman v Superman: Dawn of Justice, the 2017 film Justice League, Suicide Squad (2016), and The Flash (2023). Fans nicknamed this iteration of the character "Batfleck", a portmanteau of "Batman" and "Affleck". In the films' universe, Bruce had already been active as Batman for twenty years before the emergence of Superman, and despite being initially at odds with him to the point of paranoia and anger, Batman comes to appreciate the former, starting the Justice League in his honor after Superman's sacrifice to stop Doomsday. The Justice League, under Wayne's leadership, fights to prevent Steppenwolf from collecting the three Mother Boxes and destroying Earth alongside his master Darkseid, eventually resurrecting Superman to aid in their collective efforts.

Justice League is a 2017 American superhero film based on the DC Comics superhero team of the same name. Produced by Warner Bros. Pictures, DC Films, RatPac-Dune Entertainment, Atlas Entertainment, and Cruel and Unusual Films, and distributed by Warner Bros. Pictures, it is the fifth installment in the DC Extended Universe (DCEU). Directed by Zack Snyder and written by Chris Terrio and Joss Whedon, the film features an ensemble cast including Ben Affleck, Henry Cavill, Amy Adams, Gal Gadot, Ezra Miller, Jason Momoa, Ray Fisher, Jeremy Irons, Diane Lane, Connie Nielsen, and J. K. Simmons. In the film, following the events of Batman v Superman: Dawn of Justice (2016) Batman and Wonder Woman recruit The Flash, Aquaman, and Cyborg after the death of Superman to save the world from the catastrophic threat of Steppenwolf and his army of Parademons.