Irish actor Michael Fassbender has been telling 'X-Men' fans what they can expect from his portrayal of villain Magneto in the upcoming prequel 'X-Men: First Class'.

Speaking to SuperHeroHype, Fassbender said he had not based his performance on Ian McKellen's Magneto in the first three 'X-Men' films and hoped that "the fans aren't going to be disappointed by that".

"I just tried to steep myself in the source material, the comic books, and there's so much," said Fassbender.

The actor also paid tribute to his co-star, James McAvoy, who plays Magneto's friend-turned-nemesis, Charles Xavier.

"That was a big draw when I heard that [James McAvoy] was going to be playing Charles Xavier," said Fassbender.

"I thought, 'That's really interesting', being a big fan of his and we briefly worked together 10 years ago on 'Band of Brothers.'

"I like him a lot. He's really easy to work with. He's just a normal, practical worker, and we sat down and made sure that the relationship had all the elements that we wanted and that the progression was a good one, that there's no filler scenes and every scene is there for a reason.

"We did a lot of writing together with Matthew [Vaughn] director. Each day we'd sit down and make sure the scene was tight and that it was dealing with everything we wanted to deal with, the fact that they're unsure of each other, sniffing each other, almost like dogs, and then there's a real respect and liking for each other, and then the relationship fractures."

'X-Men: First Class' is released in cinemas on Monday, 30 May.