More From James McAvoy And Michael Fassbender On Professor X And Magneto!

"It's set in a completely different time and you are also taking these people to a much earlier point in their personal development as well as their physical and super development. What's fun is you get to figure out who they were. For me Charles is a monk. He's like a selfless, egoless, almost sexless force for the betterment of humanity and mortality. And getting to kind of go 'Well, he's got to be different from that' is quite fun because the complete opposite is an ego-fuelled, sexed-up, self-serving dude. And we've not gone too far from that... he's definitely got an ego and he's definitely got a sex drive as well."

"Charles has this sort of empathy for everybody. He has this connection to everybody because he can feel and see their experiences; their memories are his memories. But he wasn't looking for Erik; he didn't know he was there and he suddenly felt Erik and perhaps he has never connected to anybody quite the same way that he connected to Erik, you know? Maybe because of the nature of the horrible things that happened to him and the level of anger that he carries. That makes a big impression on him, not just because he feels empathy for him, but also because it's a big challenge to fix someone and to try to help someone like that."

"I don't really think in terms of good and evil. I think about what he wants to get and how motivated he is and what sort of morals he has got in place. It's like I see him very much as a Machiavellian character. The end justifies the means. And you know, he is in a situation where he is really right!"