The Atom can change size, and he puts that ability to use in Injustice 2, shrinking to dodge attacks or go on the offensive, even entering the head of his enemies during one move. The Atom also comes with a number of other abilities that set him apart from the rest of the Injustice 2 cast, many of which you can check out in the trailer to get a look at them before the character releases next week.
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The Atom will release as a part of Fighter Pack 3, which also includes the Teenage Mutant Ninja Turtles and the Enchantress. There’s no release date for the pack yet, but players who own the Ultimate Edition of the game or have bought the Ultimate Pack or Fighter Pack 3 will have early access to the Atom starting December 12.
[Source: Injustice on Youtube]