He reportedly shared the news with Showbiz 411 after being congratulated for his performance in the 2015 biographical drama "The Man Who Knew Infinity." Irons will then return as Bruce Wayne's butler/partner-in-crime-fighting in the planned Ben Affleck-helmed "Batman" film.
Directed by Zack Snyder, "Justice League: Part One" also sees Affleck, Henry Cavill and Gal Gadot reprise their roles as Batman, Superman and Wonder Woman. They're joined by as Jason Momoa as Aquaman, Ray Fisher as Cyborg, Ezra Miller as The Flash, Amber Heard as Mera, J.K. Simmons as Commissioner Gordon, and Willem Dafoe in an undisclosed role.
Targeted for release on Nov. 10, 2017, "Justice League" is now filming in London.