Jean Grey is one of the founding members of the X-Men and also turns out to be one of the most powerful mutants in the Marvel Universe. Following an exposure to a solar flare during a mission in space with the X-Men, Jean is possessed by the Phoenix Force. Known as The Dark Phoenix Saga, Jean has to battle the god-like power within her as well as a host of other who seek to use, control, save and destroy her. In the end, Jean sacrifices herself in order to save the entire solar system and potentially the galaxy from the all-consuming power within her. She uses an ancient Kree weapon to disintegrate herself following an emotional goodbye with Cyclops. Uatu the Watcher closes the storyline stating that "Jean Grey could have lived to become a god. But it was more important to her that she die...a human."