Joe Manganiello Confirmed as Batman Villain Deathstroke

See what the actor had to say about facing off against Ben Affleck.

It's confirmed that Manganiello will be in the solo Batman film, but it's unclear whether he'll also be in "Justice League," which is set to come out next year.

Manganiello only had one thing to say about the casting, posting on Facebook, "It's on..."

He also changed his Twitter background photo to Deathstroke.

Here's the footage Affleck, who plays Batman in "League," shared late last month.