"X-Men: Days of Future Past" actor Shawn Ashmore talks about his role Iceman, a character he has been portraying for the more than 13 years.

In an interview with MTV, Ashmore talked about revisiting the character for the forth installment of the Bryan Singer's "X-Men" franchise films, dishing how the scale of the movies have evolved over the years.

"I've been playing Bobby for thirteen years," Ashmore told MTV News. "This is my fourth movie playing Iceman so not only is it amazing to come back and interact with the same actors again - and the caliber of actors we get to work with is amazing. But also, Bryan Singer, he directed the first two films, he sort of started this journey, he cast a lot of us... I know how important this move is to him."

"'I have to say the general scale of the story telling his huge, so now that we know these characters you can really open it up to bigger story telling, bigger action," Ashmore added.

The intensity of the story line has deeply affected the "X-Men" characters, but a young Charles Xavier might be the one dealing with the most inner turmoil. Actor James McAvoy talked about Xavier's struggles in an interview with Collider in February.

"You'll find him very different. Not just because he's got long hair, but because of what he is and how shaky his soul is. That's really the key to him in this one, that his power, which has always been seen as his psychic ability or great intelligence or whatever, really what I think it is empathy. That's his greatest power," McAvoy told Collider.

"But he's lost the ability to be able to empathize with other people, because it's too painful for him," the actor added. "Why? Because he's been given all of his own pain to deal with, by Erik and by, as we said, Raven as well. It's not just the loss of Erik. It has a lot to do with Erik, a lot to do with his relationship with Erik and their love for each other, but it's also equally as much to do with his love for Raven, and the fact that he was sort of abandoned at the end of the last movie by both of them. Not just abandoned, but horribly injured."

"X-Men: Days of Future Past" will be released to theaters on May 23.