Batman-Superman Film Enlists 'Argo' Writer (Exclusive)

Chris Terrio, who recently changed agencies from CAA to WME, has a strong relationship with the film's star Ben Affleck.

Warner Bros. is bringing Argo writer Chris Terrio into the Batman-Superman universe.

The Oscar-winning writer, who recently changed agencies from CAA to WME, has been brought in to write a draft of the Man of Steel follow-up, the untitled Batman-Superman movie.

Terrio has a strong relationship with the studio and the film's star Ben Affleck. Affleck directed and starred in Argo, which won last year's best picture Oscar for Warners.

PHOTOS: Two-Timing Superheroes: Ben Affleck and 10 Actors Who've Played Multiple Comic Characters

Affleck will star as Batman in the Zack Snyder-helmed film, while Henry Cavill and Amy Adams also star. Game of Thrones star Jason Momoa is in talks for a role in the movie, and Gal Gadot is on board as Wonder Woman.

The film, which opens July 17, 2015, already shot a few exterior scenes this fall, but principal photography doesn't begin until early next year in Michigan and is expected to wrap in August.

David Goyer wrote the screenplay, which is based on characters created by Jerry Siegel and Joe Shuster (Superman) and Bob Kane (Batman). But sources say Terrio has been brought in to get the script in shape before filming begins. Goyer has been tied up with a number of other DC Comics titles including Sandman.

Warner Bros. declined to comment.

Email: Tatiana.Siegel@THR.com

Twitter: @TatianaSiegel27