TheVillain, you'll have to pick a side and commit; none of this in between stuff. The back story is pretty good as far as I can see, but I'm not too keen on having a character join a side just to use them for personal gain. It sounds like it could disrupt the intended nature of the game.
Aurora, I'll need to see more in the Role section, as there's not enough to really get a sense for why a high school student is even in The Order, powers or not. Also, I will need some more elaboration on your part about her powers. How effective is the power she acquires from others? Does the person have to be using it, or can they just be standing there and it would have no effect? This could be a pretty significant weakness, as all it would take is someone with a weapon not using their powers to subdue her.