It looks as though Atom's unique ability to change sizes is going to be a huge part of many players' technique.
"Physics prodigy Ryan Choi took on the mantle of the Atom when his mentor-and original Atom-Ray Palmer mysteriously disappeared". Armed with his quantum bio-belt and a "prodigal" knowledge of physics, Atom is able to shrink to the size of an atom (funny, that) and grow to very big proportions.
I particularly like how Atom can shrink to avoid projectiles (at one point he shrinks down to a tiny size to avoid Joker's crowbar attack), and fly into the body of his opponent (Bane hits his own head to force Atom out).
You can play with Atom if you have Fighter Pack 3. You may also purchase the Injustice 2 Ultimate Pack, which includes the first three Fighter Packs. The Atom will soon be a playable character and WB Interactive Entertainment and NetherRealm Studios have released the gameplay trailer featuring the hero. No, really. Watch the Fighter Pack 3 reveal trailer, below.
Remember that Injustice 2 is now available on PC and already has 4K support on Xbox One X.
The Atom is due out on 12th December.