X-Terminators, the characters left X-Factor and were moved to New Mutants. In the last major storyline of the first X-Factor series, published in early 1991, Apocalypse kidnaps Nathan Summers, sensing that he would grow up to be a powerful mutant and possible threat. X-Factor rescue Nathan from Apocalypse's lunar base, but find him infected with a "techno-organic" virus that cannot be treated. A clan of rebels from the future, known as the Askani, send a representative to the present time to bring Nathan 2,000 years into the future to be treated. Fully grown, he returns to the 20th century as the antihero, Cable. X-Factor, the X-Men, and several minor characters team up to fight the telepathic Shadow King in another crossover event, The Muir Island Saga. Afterward, the original members of X-Factor rejoin the X-Men and several characters from various X-Men-related series become founding members of a new X-Factor. Government team (1991–1998) Rather than end the series, Marvel hired writer Peter David and illustrator Larry Stroman to recreate X-Factor with new members, all of whom were already allies of the X-Men, and three of whom were involved in the Muir Island Saga. The new X-Factor worked for the Pentagon, replacing Freedom Force as the government's salaried mutant team. Their relationship with their benefactors was often strained and complicated. The new X-Factor, debuting in issue #71, included: Valerie Cooper – A U.S. government agent with history as both ally and adversary of the X-Men who becomes X-Factor's government liaison, carrying over from her duties as liaison to a prior government-sponsored team of mutants, Freedom Force. Havok – A former X-Man and brother of Cyclops who can manipulate powerful, but hard to control, cosmic rays. Havok serves as X-Factor's leader. Multiple Man – He can create duplicates of himself on physical impact. He was previously offered X-Men membership, but he declined, opting instead to work at the Muir Island research center. Polaris – Havok's long-time lover, and also a former X-Man who can control magnetism. Rumored to be Magneto's Daughter. Quicksilver – A long-running Avengers character, and a former foe of the X-Men, who possesses super speed and a difficult temperament. Strong Guy – A wise-cracking character who can re-channel kinetic energy aimed at him, transforming it into muscular mass and power. Lila Cheney's former bodyguard. Wolfsbane – A Scottish, former New Mutant who can transform into a wolf-like creature. Some artificial