X-Men

Professor Xavier created a school designed to train young mutants in the use of their powers, eventually becoming the X-men, the first five members of his team were Alex Summers (Havok), Jean grey (Ariel), Hank McCoy (the Beast), Bobby Drake (Iceman), and Warren Worthington III (the Angle). He also had a sentient robot called Cerebro who helped train the first generation of X-Men. Some years later, when Professor Xavier became too ill to lead his team, he placed the X-Men in the hands of his rival, Magneto. This decision, to entrust the well-being of the team to the man who once led the Brotherhood of evil mutants, caused great dissension in their ranks. Several members left the group, forming a separate team whose mission was to uphold the ideals taught by Xavier. This team was, for a time known as X-Factor, and its leader was Havok. After Magneto's team of X-Men returned from the Shi'ar home world, they helped Havok to defeat the evil of, the Goblin Queen.

Magneto's team of X-Men were thought to have been killed by S.H.I.E.L.D. when they dropped a small A- Bomb on the X- Mansion, but instead of dying they were saved by Apocalypse. Cerebro, believing the X-Men to be dead, escaped to Bannerman castle to find the Six. The X-Men have now relocated to their moon base.
After the Moon was destroyed the X-Men returned to Earth and most of them were killed either by Dracula or the Beyonder.