Cyclops - the X-man I love the most but unfortunately Wolverine is the main storyline in the movie. Is it because of Hugh Jackman? Either way I can't complain because I love the two of them.
Charles Xavier: Since the dawn of existence, there have always been moments when the course of history shifted. Such a turning point is upon us now. A conflict between the better and worse angels of our very nature. Its outcome will change our world so greatly, and will be no going back. I do not know if victory is possible. I only that know great sacrifice will be required. And because of fate of many will depend on a few, we must make the last stand.
Mystique. I tot Rebecca didn't wanna come back for anymore of the X movies? She had to go thru 4-5 hours of make-up in order to stick those blue scales on her body. Apparently Alan Cumming (Nightcrawler the teleporter in X2) can't afford to have anymore blue days.