Every person, whether good or evil, even those who stand in the middle of the battlefield, have a group they belong to. Some answer the calling of a hero, others the darkness of a villain, and some refuse to pick a side. These are the superheroes of the world, even those who seem to understand being a civilian as moral support will help their heroes stand and their most hated villains fall. But through everything they all belong to some organization, whether they realize it or not, and many will soon come to realize just how important this perspective on things can claim their lives. Some are consumed, others are unsure of where they stand. Fortunately there is always the chance to change sides, and the events leading up to it even more profound. In the end it depends on the person — even those who think they know where they stand will always find a change of heart, walking a path which could be good... Or evil.
X-Men & New Mutants