Joe Manganiello Joins Ben Affleck's Batman Movie as Villain Deathstroke

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The Batman roster is heating up!

Joe Manganiello has signed on to Ben Affleck's upcoming solo Batman movie, the Magic Mike XXL star confirmed via Twitter on Thursday.

MORE: It's Official! Ben Affleck's Stand-Alone Batman Movie Is a Go and He's Directing

The 39-year-old actor will play Deathstroke -- a villainous mercenary who gains superpowers in a clandestine military experiment -- in the upcoming DC Comics franchise film, the Wall Street Journal reports.

In August, Affleck, who will also direct the flick, teased who Batman's adversary would be in a Twitter video introducing Deathstroke (but not who plays him!).

WATCH: Ben Affleck Says Dressing Up as Batman for His Son's Birthday Party 'Was So Mortifying'

Talk about a high-powered match-up!

While we can't wait to see Affleck v. Manganiello, the untitled Batman stand-alone does not yet have a release date, while DC's Justice League is set to hit theaters in November 2017. It's unclear whether Deathstroke will have a cameo in that film.

Watch the video below to see Affleck explain why he makes the perfect "older" Batman.

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