Fakes: James McAvoy

James McAvoy: Hard to Control

He can read your mind, control your mind and even communicate with you through his mind.
But even this guy has trouble with an unwanted erection from now and then. 

Fake: Michael Fassbender

Michael Fassbender: Hard as steel

I love love love the movie X-Men: First Class. And this guy is a big reason why. Being able to control and move metal, but this is something just as hard as metal that he might need some help with ;)