Pascal Ackermann is probably one of the most talented computer graphics artist I've seen to date. I can tell he's a big Marvel Comics fan since he made realistic illustrations of Spider Man, Wolverine and even Angel. He is currently working for 'Actiplay.'
Pascal Ackermann is also a freelancer artist. Some of his artwork includes mythical characters and superheroes. I encourage you to go to the links provided to see more of his amazing computer graphics work.