GamerFeed has put together a preview of X-Men Legends, based upon some hands-on experience with Activision's action RPG. Take a look:
Again, this is a real-time action game with RPG elements, so things fly fast and hard while playing the game. As you beat up the enemies, your experience and leveling up is done right on the fly with a cool visual flourish. No need to slow down the game at all.
So you start off with a team of four X-Men, but if any of them starts to act out, put them in their place by choosing another team member during the game at a number of extraction points. This keeps the game fresh and fun to play, especially when you encounter a certain problem that may require a special power to solve.