Remnants, prompting him to flee. 2Face, convinced that Billy is setting them up to fail attempts to kill Billy, resulting with Billy killing her but giving her a vision of her mother to die peacefully. Echo then willingly agrees to risk her baby's life and gives her to Billy. In the epilogue, the ritual has succeeded but 2Face's attack made Billy unable to survive the regreening. Jobs has married Echo and have named their next daughter after Tate, Mo'steel has married Noyze, who have one child and another on the way, Mattock and Lyric have married and Violet marries Sanchez. They have searched for the Alphas with no luck and there's no sign of Newton. At last, the survivors have peace. Notes Although there are numerous references to "The Ancient Enemy", it is never specified what The Ancient Enemy is: a being, a place, or something else. Several points of evidence (including Te identifying him as such) point to Billy as being The Ancient Enemy. However, at one point the Troika chant "We are The Ancient Enemy". Furthermore, it is not known who or what The Ancient Enemy is the enemy of. The sources of the various mutations are not known. Most are described as being a result of exposure to radiation; however, even some of the characters note that this is not an adequate explanation: some are subtle, while some are extreme (compare the Troika to a lesser mutation like Edward's chameleon-like power to change the color of his skin). Some only become apparent after a time: Tate's mutation "The Mouth" is only discovered over halfway through the series. Certain characters seem to have unusual traits unrelated to the others. Examples include Kubrick, whose see-through skin is caused by Mother, and Billy, whose strange abilities (also unexplained) existed before the main events of the stories. The bodies of all the corpses of the Mayflower passengers vanish without explanation. Eight "Missings" are unaccounted for. Three become the Troika, and the others, called "The Missing Five" are later revealed to be, somehow, alive within Billy. Although the Moon, or any of the three parts it breaks into never impact Earth (Jobs and Mo watch the devastation unfold from orbit after manually releasing the Mayflower's solar sails), the Earth that the Remnants return to has the Moon embedded in its side. The book series has a few references to The Beatles, with