The right guy is either Facade or Mastermind. I think that he is Facade because Jason, who has similar powers, was in X2.
Facade can fade into any background and essentially disappear by matching his appearance to that of whatever he's standing in front of, and can blend in so well he's virtually invisible to the eye. He needs to be standing next to something to do this. He also seems to have the ability to "melt" into a solid surface, like the ground. He is a Morlock.