Did Ben Affleck Just Reveal 'Justice League' Villain?

The actor posted video footage to Twitter.

The silent 27-second clip features the famed DC villain Deathstroke.

Deathstroke is from the 1980s and is a pretty amazing foe. He's often the nemesis of both Batman and the Green Arrow, so that could also be a hint of a new Justice League member.

Here's the clip. Enjoy!