Quixos
From Lexicanum
Quixos, also called "Quixos the Great" and "Quixos the Bright", was a venerated Inquisitor of the Ordo Malleus who became tainted by the forces of Chaos he had sworn to combat.
History
While battling a Daemon on Lackan XV, Quixos was wounded by one of the Daemon's claws, which embedded itself in his heart. As removing the fragment would kill him, Quixos decided to tap its energy to increase his already considerable psychic potential, though this had the effect of corrupting his body.
Some decades later, he encountered a group called the Mystic Path on the planet Maginor, who used warp artifacts to increase demand for their products. Rather than destroying them, as most Inquisitors would have done, Quixos observed their practices and deduced that Chaos was not a corruptive influence, but rather something that was merely put to wrong ends. He built up a relationship with the Mystic Path and delivered many artifacts to them for investigation. This eventually led him into a confrontation with the puritan Inquisitor Helgrund.
Helgrund had launched himself on a search for a powerful tome called the Malus Codicium, which dealt with summoning Daemons. Upon arriving on Zandrini Prime, where the Malus was held, Helgrund was dismayed to discover that the book was gone. His subsequent investigation led him to Maginor, where he battled the Mystic Path...now a cult under Quixos' control. Eventually, Helgrund - horrified to discover a fellow Inquisitor at the center of the Mystic Path's operations - came face to face with Quixos himself. Quixos had, by that time, channeled the Daemon Kharnagar the Deathly into a sword, created Daemonhosts for the creatures Cherubael and Prophaniti, and also mastered the art of creating Soulguards, individuals who warded off Chaos. The two Inquisitors battled, blessed hammer and unholy blade clashing, each blasting through the wards the other had erected. But Quixos gained the upper hand, plunging his blade into Helgrund's stomach, causing him to immolate.
In 239.M41, Quixos encountered and killed Inquisitor Hetris Lugenbrau, who had attempted to locate and kill the renegade Inquisitor, but instead shared Helgrund's fate at the end of Quixos' daemonblade. After that, he disappeared and was believed to be dead at least a century later. However, Quixos' influence remained. He manipulated Inquisitor Konrad Molitor and had him infiltrate Gregor Eisenhorn's cell to locate a powerful tome known as the Necroteuch, and also instigated a bloody incident at the Triumph on Thracian Primaris. Eventually, Quixos was declared Heretic and Extremis Diabolus, and hunted by a cell of five Inquisitors led by Eisenhorn. He was killed in single combat with Eisenhorn at his base on Farness Beta, and his ashes launched into the heart of a star.
Conflicting Dates
There has been conflicting sources as to when, exactly, Quixos lived. Some sources had him living as early as M35, while the Eisenhorn Trilogy explicitly places his activity around the first half of M41. At the beginning of the investigation that would eventually end in his death, Quixos was 342 standard years old.
A small section of Codex: Daemonhunters that talks about Quixos appears to place the confrontation between the two Inquisitors in 345.M35 - about six thousand years before the time in which the Eisenhorn Trilogy is set. According to Malleus, however, the battle between Eisenhorn and Quixos took place in 343.M41.
