The theatrical cut of Justice League ended with a tantalizing teaser. Jesse Eisenberg’s Lex Luthor had escaped from prison and was lounging on a yacht. A mysterious armored figure has approached, turning out to be DC’s fan-favorite villain Mortal Blow performed by Joe Manganiello. Luthor offered proof of Batman’s secret identity and the pair celebrated, hinting at a future DCEU movie in which Affleck’s Batman takes on the master assassin.
The humiliating failure of Joss Whedon Justice League meant the movie never happened, although Zack Snyder brought back Manganiello for the post-apocalyptic coda “Knightmare” at the end of Zack Snyder’s Justice League. But with this film moving away now and Warner Bros. clearly having little to no interest in working with the remnants of Snyder’s DCEU history, are we ever going to see Deathstroke in action?