Director Zack Snyder revealed some interesting insights into the relationship between Batman (Ben Affleck) and Deathstroke (Joe Manganiello) in the forthcoming Snyder Cut of Justice League during Saturday’s IGN Fan Fest 2021. Traditionally Batman’s foe, Deathstroke, aka Slade Wilson, is an assassin (albeit one with his own code) who has allied with other supervillains in the past.