Ben Affleck reveals Deathstroke will appear in Justice League Ben Affleck has taken to social media to offer a cryptic teaser for fans, posting a video without comment or explanation, of someone in a Deathstroke costume on a set. Though it would be easy to think this is in regard to the solo Batman movie that Affleck is slated to direct, the actor is currently filming Justice League in London, so it would appear that the character is set to appear in the 2017 sequel!