Initially a Puritan of the Amalathian faction[1b], Eisenhorn's ideology would alter over the course of his career so dramatically towards Radical Xanthism that other members of the Inquisition would consider him possibly heretical. Indeed, Eisenhorn has officially been considered a rogue agent at least twice in his Inquisitorial career, only to be proved righteous both times.[3x][4x]
Born in 198.M41[1a][1b], on DeKere's World[1h], Gregor Eisenhorn became a pupil of Inquisitor Hapshant at a young age. He studied alongside fellow trainee Titus Endor and was elevated to the rank of Inquisitor in 222.M41, aged 24[1b]. His first successful persecution was that of the heretic Lemete Syre.[3a][3b]
Carving out a stable and competent career, Eisenhorn eventually found himself being drawn into events that would change the course of his life in the year 240.M41.[1a] During this year, Eisenhorn successfully tracked down and killed the mass-murderer Murdin Eyclone on Hubris[1c], an investigation that is notable not only for bringing Godwyn Fischig[1d] and Alizebeth Bequin[1e] into his retinue, but also for setting him on the route of both Pontius Glaw and the Necroteuch.[1f]
The Necroteuch Affair
Following leads from the Eyclone investigation, Eisenhorn became tangled up with a heretical cabal on the world of Gudrun[1g], and in fact was briefly captured and tortured by one of their members, Gorgone Locke[1h]. The cabal was eventually driven off Gudrun by a full Inquisitorial purge led by Inquisitor Commodus Voke.[1i][1j]
Eisenhorn was able to recover a device known as "the Pontius" from the cabal, and it later transpired that this device held the encoded brain-engrams of the long-dead infamous heretic Pontius Glaw; one of the cabal's schemes had involved arranging his resurrection.[1k] Eisenhorn held Pontius Glaw captive and interrogated him regularly, before finally choosing to have the Pontius device incarcerated by Magos Bure of the Adeptus Mechanicus. This decision would have a profound effect on Eisenhorn's future.[3x]
Following up further leads from the purge of the cabal led Eisenhorn into one of his most famous investigations; the affair of the Necroteuch - a tome of chaotic knowledge. Eisenhorn tracked the survivors of the cabal to a colony world inhabited by the xenos Saruthi.
The Saruthi had come into the possession of a copy of the Necroteuch, and had translated it into their own language, creating two versions of this powerful chaotic tome and a translating tool. The human Necroteuch tome was quickly found and destroyed by Eisenhorn himself. Some radical Inquisitors deemed this a heretical act, and damned Eisenhorn for it. However, the majority of the local Inquisitorial conclave supported Eisenhorn's decision to burn the tome, outvoting the radicals.
Eisenhorn was therefore spared from censure and was in fact instrumental in planning a raid on the Saruthi homeworld during which the remaining items were destroyed. It was during this attack that Eisenhorn also first met Cherubael, a powerful daemonhost who would plague Eisenhorn and the Imperium in later endeavours.
The following year, 241.M41, Eisenhorn investigated apparent ritual murders on the world of Sameter, at first believing the killings to be the work of some chaotic cult. Soon, however, it was revealed that the culprits were ex-soldiers of the Imperial Guard. These former soldiers of the Sameter 9th Infantry had been driven mad by the horrors they had faced in war, and were ritually killing regular citizens. Backed up by the local Adeptus Arbites, Eisenhorn managed to corner and eliminate the fanatics in an abandoned and decaying building. During the resultant firefight Eisenhorn lost his left hand to an experienced former-sharpshooter. He was offered a prosthetic but declined, making do with a fused stump until he could have a vat-grown hand grafted on two years later.
In 312.M41, Eisenhorn's best friend, Midas Betancore was killed by the heretic Fayde Thuring during an investigation. Thuring escaped, and Eisenhorn promised to keep a watchful eye on Midas' infant daughter, Medea. Years later, when she came of age, she would follow the path of her father and join the retinue of Inquisitor Eisenhorn as his pilot.
26 years later, in 338.M41, Eisenhorn began the investigation that he would become most known for; the elimination of the heretic Inquisitor Quixos. The investigation took place in the aftermath of the disaster of the Thracian Primaris Triumph (where Eisenhorn's Interrogator, Gideon Ravenor, was horrifically injured), an atrocity that appeared to have been engineered to free several alpha-plus class rogue psykers.
Eisenhorn's investigation took him to the world of Eechan, where, posing as mutants, he and his team discovered that there was Inquisitorial collusion in the scheme that freed the psykers. Inquisitor Lyko was discovered in the company of the daemonhost, Cherubael. Taken aback by the reappearance of Cherubael, Eisenhorn focused his investigations upon the creature. This led him to Cadia, where he discovered another daemonhost, Prophaniti, and ties between these daemonhosts and the missing radical Inquisitor Quixos. However, Eisenhorn's investigation was sidelined for some time by his arrest by Inquisitor Osma for consorting with daemons. Escaping, he was declared outcast and forced to operate as a rogue for the remainder of the investigation. Eisenhorn sojurned with his associate Magos Bure on the world of Cinchare for some time, where he conferred with his prisoner, Pontius Glaw. During this period he defeated a Chaos cult that existed on the world and gained master-crafted Force Weapons.
Eisenhorn next assembled a small strike group of three other Inquisitors, and acting in concert with them tracked down and confronted Quixos. Eisenhorn himself was the one who killed Quixos, recovered his heretical book, the Malus Codicium, and banished both Prophaniti and Cherubael. He was cleared of all charges against him at the conclusion of the investigation.In 345.M41, Eisenhorn succeeded in secretly summoning the daemon Cherubael and trapping him for interrogation and study.[Needs Citation] In 355.M41 he dealt with a minor warp incursion on Gudrun.[Needs Citation]
It was in the year 386.M41 that Eisenhorn was able to avenge the death of Midas Betancore, but it came at considerable cost. Killing the heretic Fayde Thuring cost him the lives of several associates, placed Bequin into a coma, resulted in the destruction of his gun-cutter and forced him to use Cherubael as an ally.
Shortly afterwards Eisenhorn was the victim of a carefully planned attack orchestrated by Pontius Glaw, who had escaped captivity and decided to punish and torment his captors. Almost every facet of Eisenhorn's life was brought crashing down around him, including his career, as he was once again declared an outcast by Inquisitors Osma and Heldane. His organisation shattered, his own body broken and much of his retinue dead, Eisenhorn was eventually able to call on the aid of his once-pupil, Gideon Ravenor, who was now a full Inquisitor. With Ravenor's assistance, Eisenhorn was able to track Pontius down and eliminate him for good. However, the Pontius affair did more than deplete Eisenhorn's physical resources, it also finally broke down his resistance to employing radical methods - he began to travel with Cherubael as his constant companion.
Eisenhorn largely dropped out of sight after the Pontius affair, despite his outcast status apparently being rescinded once again. He has reappeared for only brief moments in the years following, to recruit new retainers or confer with past associates, such as warning Gideon Ravenor about the intentions of the cult known as the Divine Fratery. Later members of the cult discuss Eisenhorn and it is suggested that he may have been killed fighting their followers, as he was inside a building that they bombed, and Eisenhorn subsequently vanished from their foresight. The truth of this can be disputed.
Eisenhorn seemingly escaped death, as he was seen protecting the secret of the Keeler Image, which contained an uncorrupted visage of Horus Lupercal and an explanation that the Emperor denied his own divinity. To keep the heretical document from harming the Imperium, Eisenhorn massacred a group of Inquisitorial Stormtroopers to keep the secret safe.
Later, while investigating suspicious heretical activity on Gershom, Eisenhorn recruited the Magos Biologis Valentin Drusher. Along with the Arbites official Germaine Macks they discovered a local plot by the Cognitae under Goran Gobleka. Captured, Eisenhorn was subjected to a Warp infused device which unexpectedly vastly increased his psychic abilities while also allowing him an encyclopedic knowledge of Enuncia. Eisenhorn also learned of a new foe connected to the Cognitae, the mysterious King in Yellow. After a brief reunion with Gideon Ravenor, Eisenhorn pledged to hunt down and destroy the figure before he could destroy the Imperium.[7a]
Eisenhorn seemingly escaped death, as he was next observed pursuing Alizebeth Bequin, who in turn was being sought after by the Cognitae and the mysterious King in Yellow due to her Blank abilities. Now working with a Space Marine identifying himself as Alpharius, Eisenhorn has Cherubael free Bequin from Ravenor's captivity.
Eisenhorn and his entourage next traveled to Queen Mab on the world of Sancour to investigate how to enter the City of Dust, the pocket dimension of the Yellow King. During their travels they encountered Ravenor, who Eisenhorn was able to establish a tenuous truce with via Bequin.[12a][12b] Eisenhorn later attempted to use Cherubael to take Bequin back into his custody before she entered the City of Dust, but was foiled by Comus.[12b]
Appearance and Abilities
A psyker, Eisenhorn possesses considerable natural willpower and resolve, which combined with his pool of psychic power, makes him a potent telepath. He normally channels his psychic talent through his voice, compelling people to follow his instructions. He can focus this talent upon distinct individuals in a crowd, or upon many people at once.[Needs Citation] After being experimented on by the Cognitae, Eisenhorn's psychic abilities increased substantially to the point where even Cherubael feared him.
The most obvious physical attribute of Inquisitor Eisenhorn is his crude augmentic assist system, which can be seen projecting from the back of his head and encasing his lower limbs. This implantion was done in a hurry near the end of the Pontius affair and appeared to both be permanent and sub-par. The augmetic rig allows him reasonable movement, but he has taken to using a swordstick to aid balance. Several centuries old, Eisenhorn only looks roughly middle-aged to the casual observer; his aging process has been retarded by Inquisitorial Rejuvenat treatments.[Needs Citation]
The torture inflicted by Gorgone Locke resulted in the permanent destruction of many of the nerves in Eisenhorn's face. As a result, he has limited facial expressions and movement and notably can no longer smile - though he conceded to himself that this was no great change.
Clean-shaven and dark-haired, Eisenhorn was forced to permanently shave his head when accepting his augmetic system. He normally wears sober suits of dark greys or blacks under long blue or black high-collared coats.[Needs Citation]
Underneath the coat could once be found his sword, sheathed at his hip. It is now fashioned into a sword-stick, with the scabbard forming a walking-cane. Also under his coat is the chest-rig for his sidearm, normally holstered under his left shoulder. His Inquisitorial rosette is normally placed in an inside pocket. While Eisenhorn typically plays down his Inquisitorial station, he occasionally chooses to proudly display the full majesty of his office. In such circumstances he dresses more ornately and colourfully, if still in the same basic pattern of suit and long coat. His Inquisitorial rosette is then pinned to the front of his jacket, alongside other symbols and distinctions he is eligible to wear.[Needs Citation]
Eisenhorn and his retinue also employed their own personal form of coded language, named Glossia. The basic format was created by Eisenhorn when he was 32 years of age, but it grew organically with use over the years, with several of his employees contributing to its form.
In the early part of his career, Eisenhorn carried a power sword of unusual design; instead of having a conventional metal blade as the focus of its energy-field, the blade was itself made of pure energy. This antique, graceful and deadly blade had been blessed by the Provost of Inx.
In contrast to this priceless weapon, his standard sidearm during most of the same period was a cheap Naval-pattern Scipio stub-pistol that had been crudely gang-marked by Lores Vibben, an ex-ganger employed by Eisenhorn as his bodyguard and personal aide. The grips had been replaced with ivory, upon which was etched an entwined skull and rose; droplets of blood from the rose thorns were represented by inlaid carmine gems.
Eisenhorn was initially rather embarrassed by this customisation to his pistol, but later realised that he was being honoured by Vibben's marking of his weapon in her gang-colours. When Vibben was killed by agents of Murdin Eyclone, Eisenhorn made sure to use the pistol she had altered to execute Eyclone. It was then buried with her.
Eisenhorn's next signature weapon was a heavily customised Bolt Pistol given to him by a Librarian of the Deathwatch. Made of green-hued chased steel, it was hand-crafted to be of compact dimensions and given an unusual feature of the magazine housing being in the handgrip. It was lost during the Quixos investigation and never replaced with another particular favourite handgun.[Needs Citation]
His power-sword destroyed in battle with Cherubael, Eisenhorn had Magos Bure craft him two powerful force weapons; a force staff topped by a powerful psychic lodestone carved to resemble Eisenhorn's own skull and a force sword based on Barbarisater, a blade once carried by Arianhrod Esw Sweydyr, one of his deceased retainers. A very old weapon, the blade had been folded over 900 times and enhanced by potent pentagrammatic wards. Originally a long, double-handed saber-like weapon, Barbarisater was straightened and reforged into a single-handed sword after it was broken in battle against Quixos. His force-staff is slung across his back when not in use.[Needs Citation]
The most powerful conventional weapon in his arsenal was his gun-cutter, a personal spacecraft capable of atmospheric flight, if not independent warp-travel. Large enough to contain cabins and crew-quarters for a half-dozen people as well as a sizable cargo deck, the cutter was fast, agile and well-armed with several autocannon turrets.[Needs Citation]
Inquisitor Eisenhorn created a considerable organisation during the first part of his career, starting out with a bare handful of hired hands and eventually employing dozens of retainers, including the Distaff, a group of psychic Blanks. This world-spanning organisation was destroyed by the machinations of Pontius Glaw, who also ensured the deaths of most of Eisenhorn's retinue. With Eisenhorn missing at the end of the Pontius case, his surviving followers became part of the retinue of Inquisitor Ravenor. Eisenhorn largely avoided acquiring servants other than Cherubael for some time, but eventually began assembling a small retinue around himself once more. His notable employees and associates are listed below:
The Necroteuch Affair
During his investigation of House Glaw and the hunt for the Necroteuch, Eisenhorn employed only a small retinue.
- Uber Aemos (Savant)
- Midas Betancore (Pilot)
- Lores Vibben (Bodyguard)
- Alizebeth Bequin (Untouchable)
- Godwyn Fischig (Adeptus Arbite)
The Hunt for Quixos
By the time Eisenhorn came up against the machinations of Quixos, his retinue had expanded dramatically, with some members operating semi-independently and recruiting new agents on Eisenhorn's behalf.
- Uber Aemos
- Alizebeth Bequin - now in charge of recruiting and training psychic Blanks for the ranks of the Distaff.
- Godwyn Fischig - now enacting distant missions on Eisenhorn's behalf.
- Gideon Ravenor (Interrogator)
- Arianhrod Esw Sweydyr (Swordswoman)
- Mescher Qus (ex-Astra Militarum heavy-gunner)
- Medea Betancore (Pilot)
- Harlon Nayl (Former bounty-hunter, now hired gun and recruiter of same)
- Jan Husmaan (Sniper)
- Nathun Inshabel (Interrogator)
Eisenhorn's retinue, including almost the entire Distaff, was gutted by the actions of Pontius Glaw. However, several members from this era survived and later transferred to the retinue of Gideon Ravenor.
- Uber Aemos
- Alizebeth Bequin
- Godwyn Fischig
- Medea Betancore
- Harlon Nayl
- Kara Swole (Acrobat turned hired gun)
- Bex Begundi (Gang-gunner hired by Harlon Nayl)
- Duclane Haar (ex-Astra Militarum sniper)
- Eleena Koi (Psychic Blank recruited for the Distaff)
- Cherubael (Daemonhost)
- Lucius 'Slick' Devlan (Gunfighter)
- Severina and Sevora Devout (Death Cultists)
- Quovandius (Warrior)
- Valentin Drusher (Magos Biologis)
- Germaine Macks (Arbites official)
- An Alpha Legion Space Marine identifying himself as Alpharius
Eisenhorn often worked alongside trusted allies who were not official members of his retinue.
- Tobias Maxilla (Merchant Captain)
- Olm Madorthene (Ranking officer, Naval Security, Imperial Battlefleet Scarus)
- Geard Bure (Tech Priest)
- Crezia Berschilde (Surgeon and Eisenhorn's former lover)
- 1: Xenos (Novel) - Eisenhorn (Omnibus):
- 1a: Chapter One, pg. 7
- 1b: Chapter One, pgs. 19-22
- 1c: Chapter Two, pg. 28
- 1d: Chapter Three, pg. 40
- 1e: Chapter Four, pgs. 51-52
- 1f: Chapter Five, pgs. 57-58
- 1g: Chapter Ten, pgs. 99-108
- 1h: Chapter Eleven, pgs. 110-113
- 1i: Chapter Eleven, pgs. 121-123
- 1j: Chapter Twelve, pgs. 124-126
- 1k: Chapter Sixteen, pgs. 163-166
- 2: Missing in Action (Short Story)
- 3: Malleus (Novel):
- 4: Hereticus (Novel):
- 5: Thorn Wishes Talon (Short Story)
- 6: The Strange Demise of Titus Endor (Short Story)
- 7: The Magos (Novel)
- 8: The Keeler Image (Short Story)
- 9: Pariah (Novel) Chapters 37-40
- 10: Eisenhorn Omnibus Cover
- 11: The Inquisition (Background Book), pg. 32
- 12: Penitent (Novel) Chapters 1-2