by scientists among the human resistance during what were called the Genesis Wars. Before the Genesis Wars, the Peacemakers were created by humans as weapons against humanity's alien foes, but, determined to protect their human creators and prevent them from destroying themselves, the Peacemakers switched sides and assisted the aliens by imprisoning the survivors of the war in an artificial environment, while at the same time backing up their cultural development to the Middle Ages. The Peacemakers were able to do this with the help of a gifted psychic named Celia Mauser, who, like the Peacemakers themselves, had originally been a tool of the defense. Her powers were used to enhance humanity's weaponry, to the point where it was possible to predict enemy movements. The Peacemakers encouraged Celia Mauser to leak information to them in exchange for the lives of her brother and sister. She was too late; her siblings died, and Celia Mauser's treason was for nothing. Celia was then kept in an area of phase space in a sort of virtual reality for 5000 years, while humanity continued to live on unknowingly in an intangible cage, isolated on a single continent called Dusbin. Her powerful mind was programmed into the artificial environment's control system, and the religion concocted by the aliens to control humanity worships her as a god. For 5000 years, the Peacemakers watched over humanity, keeping cultural development at a standstill, and prepared to wipe out much of the human race if it ever showed any sign of stepping beyond its apportioned limits (as the Kingdom of Leinwan does toward the end of the series when the attempt is made to coerce the Peacemakers into helping them conquer the world). As the Peacemakers put it, "You don't know you are trapped if all you've ever known is your cage." Humans are completely incapable of resisting the will of the Peacemakers. Just looking a Peacemaker in the eye renders a human obedient – even Shannon and Raquel are not immune to this. Pacifica is the only human being in 5000 years who is immune to this control, and her ability will become communicable to others once she reaches her sixteenth birthday. This is why the Peacemakers are determined to destroy her, and why they have used the Grendel Prophecies to induce others to do the job for them, since Pacifica cannot be directly attacked by the Peacemakers.