Swamp Thing was a major character in Year 4 of the Injustice comic. And now, he's going to be a part of the roster in Injustice 2. He might be best known for the campy movie made in the 80's by John Carpenter, but in the DC world he's one of the most powerful beings on Earth.
With control over all vegetation, he's also practically immortal and has mastery over all elements. He's gotten a major upgrade in the past couple years and I hope, hope he gets an appearance in the planned Justice League Dark movie.
Check out what he can do in the new game in this exclusive video from IGN.