Codename: Destiny
Real name: Irene Adler
Past: Destiny was a powerful precog, with the ability to see many, if not all possible threads of the future. She also used this ability to allow her to "see" where she was going, even though she was blind from birth. She had a very close relationship with Mystique, which was never fully explored, but suffice it to say that they shared a house and raised Rogue together. When Freedom Force went to Muir Island to defend it from the Reavers, Destiny was left in Forge's  care, but she told him to go help Mystique instead. Then, as she had apparently forseen, Legion (then presumably under the control of the Shadow King) killed her. Strangely, after the Shadow King was defeated, Legion began to see visions of Destiny while in his coma. She seemed to be inducing him to try and kill Magneto, precipitating the events of the "Legion Quest" and the "Age of Apocalypse." While Legion's plan failed, and he died in the past, consumed by his own energies, the sorceress Margali somehow managed to keep Destiny's and Legion's souls from departing this world completely, and now uses them to aid her as a new team of Defenders. Recently Shadowcat discovered Destiny's journal, which contained pages of cryptic prophecies about the end of the millenium and the gathering of The Twelve. It also hints at the rise of Apocalypse, and death for many of the mutants and the world in general. So far, some of her writings have been proven correct, but the rest are still shrouded in mystery.