The cast of Kick-Ass 2 isn't the only thing that's growing. Aaron Johnson who plays the titular superhero recently talked about the changes his character was going through.For me, I’m very much the same, I’m back in the wet suit. But there are quite a few alterations on others. You’ll see that there’s not such a transition in him at first, but there is a journey that he goes on.I think there’s a challenge in trying to make him grow as a person and develop. Have a journey and an arc, I think there’s a challenge in that. But he’s got to have some similarity to the last one.Oh, and who you're seeing at the right is actually the villain of Kick-Ass 2, Mother Russia. Russian bodybuilder Olga Kurkulina has been cast to play the role and she couldn't be any more fit to do it--in more ways than one.Check out the next picture in the gallery and you'll see what we mean.