Zack Snyder teases a Deathstroke scene from Justice League Exactly one month ago, Batman himself, Ben Affleck, posted a mysterious video online revealing that the assassin Deathstroke would be appearing in the upcoming Justice League movie. Now, director Zack Snyder has posted a photo from the set that (as pointed out by @TheDCEU Twitter account) reveals a set of storyboards for a scene with the character set to be played by Joe Manganiello. What is interesting to note about the scene in question is who Deathstroke is talking to.