One of the characters that will be available in the next Injustice 2 fighter pack is Atom, a hero that can shrink to minute sizes or grow rather big. He is essentially the DC version of Ant-Man except Atom came first. If you’ve watched either Arrow or Legends of Tomorrow then you’ll be familiar with some of his powers.
In the trailer below you can see Atom in action and you can already tell he is going to be a pain to fight against.
Source: YouTube