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    Eisenhorn & Company 

Inquisitor Gregor Eisenhorn
"My name is Gregor Eisenhorn, and these deeds were mine."

The titular Inquisitor, and the trilogy's main character.

Gregor Eisenhorn was a renowned Inquisitor of the Ordo Xenos, active during the third and fourth centuries of M41.

Initially a Puritan of the Amalathian faction, 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.

  • Hand Cannon: His bolt pistol, which was gifted to Eisenhorn by a Deathwatch Librarian in honour of him slaying Mandragore.
  • Holy Hand Grenade: In Malleus, Eisenhorn takes Barbarisater and the runestaff to be consecrated by a priest in preparation for his final encounter with Quixos and their daemonhosts. He also has pentagrammic wards carved into both weapons to make them more effective against daemons.
  • Master Swordsman: He grows into this trope over the course of Malleus after he starts using Barbarisater.
  • Necromancy: In Hereticus, he uses sorcery to reanimate a slain mercenary as an undead thrall that he can speak through and control from a distance. He sends it off to meet with—and kill—the people who are trying to kill him.
  • The Stoic: He expresses little emotion, though it's not by choice: the torturous ministrations of Gorgone Locke left permanent nerve damage in his facial muscles, leaving him unable to smile.
  • Sword and Gun: He typically wields a sword and large bore, solid projectile pistols as his main weapons.
  • Well-Intentioned Extremist: Like any in the Inquisition.

Alizebeth Bequin

A Pariah that Eisenhorn meets during his investigation on Hubris in Xenos. She joins his team then, and goes on to become one of the longest-serving members of his retinue as well as one of his closest companions.

  • Anti-Magic: As a Pariah, psychic powers and sorcery don't work in her presence, and she creates a blank spot where even the strongest psykers can't act or see into simply by being there.
  • Hooker with a Heart of Gold: Bequin is working as a prostitute when she is first encountered, and is one of the nicer characters in the books.
  • Naked First Impression: Eisenhorn first bumped into her during a raid on an apartment complex, where she'd been servicing a client. Naturally, she was quite mortified.
  • Older Than They Look: By Malleus, Bequin is a hundred and twenty-five. She doesn't look a day over thirty thanks to augmetic surgery and regular juvenat treatments. By Hereticus she’s close to a hundred and seventy, and the only visible signs of her age are some crow’s feet.

Uber Aemos

Eisenhorn's savant, who previously served his mentor Inquisitor Hapshant.
  • Catchphrase: "Most perturbatory...", which he utters whenever he finds something peculiar or perplexing.
  • Character Death: He dies from the strain of taking Cherubael into himself near the end of Hereticus.
  • Non-Action Guy: Aemos is a frail old man with little to no combat experience, so he leaves the fighting to the younger and more capable members of Eisenhorn’s retinue.
  • Photographic Memory: He never forgets anything he’s seen, and can remember things with perfect recall and incredible detail. He even memorizes the entirety of the Malus Codicium, allowing him to summon Cherubael near the end of Hereticus.
  • Powered Armor: He relies on an augmetic exoskeleton to support his frail body. It gives him enough strength to break a man’s neck with one punch.
  • The Smart Guy: The most learned and intelligent member of Eisenhorn's retinue, thanks in no small part to a meme-virus that compels him to learn as much information as possible, no matter how trivial. His primary role is to assist Eisenhorn's investigations by sifting through data and conducting research.
  • Willing Channeler: He forces Cherubael to possess him near the end of Hereticus, keeping the daemon contained long enough to prepare a proper vessel for it. The strain of holding Cherubael inside himself this way kills Aemos.

Godwyn Fischig
An Arbites chastener from the planet Hubris. Joins up with Eisenhorn in Xenos to untangle a conspiracy behind a terrible atrocity committed on his home planet, and becomes a full time member of Eisenhorn's retinue by the end of the book.
  • Demonic Possession: He becomes the host for Cherubael after his death.
  • Incorruptible Pure Pureness: Fischig ends up betraying Eisenhorn to the Inquisition because he believes he is helping a man he considers a friend, even if it means killing him to save his soul. Medea Betancore kills him before he can deliver the fatal shot.

Midas Betancore

A Glavian pilot and one of Eisenhorn's closest friends.
  • The Ace: Midas is easily the most competent and physically skilled member of the retinue in Xenos. He’s an ace pilot, an expert marksman with rifles and pistols, a master of stealth, and a talented musician.
  • Ace Pilot: He comes from Glavia, a planet renowned for its pilots, and is exceptionally skilled even by their standards. At one point he manages to hide the guncutter inside of a narrow cave on an asteroid while shaking off a squadron of pursuing fighters, and fool them into thinking that he crashed.
  • Brain–Computer Interface: His hands are laced with Glavian bio-circuitry, which can directly interface with the controls of any craft he pilots.
  • Dropped a Bridge on Him: He's killed offscreen between the first and second books.
  • Guns Akimbo: He wields a pair of Glavian needle pistols as his weapons of choice.
  • The Lancer: In Xenos, Betancore is the most trusted and competent member of Eisenhorn’s retinue, acting as the Inquisitor’s right-hand man.

Gideon Ravenor

Eisenhorn's Interrogator by the time of Malleus, and the best pupil he's ever trained.

For more information about him, see the character sheet for his own series.

Harlan Nayl

An ex-bounty hunter from Loki.

For more information, see the Ravenor character sheet.

Medea Betancore

Midas' daughter, who inherits his position as the pilot of Eisenhorn's guncutter. She never knew Midas, as he died shortly before she was born; this left her with a strong desire to get revenge on Fayde Thuring, the man who killed him.
  • It's Personal: Medea's normally coolly professional and snarky, but when she learns that her father's killer Fayde Thuring has been found at the beginning of Hereticus, she becomes very angry and demands that Eisenhorn let her be there to take him down.
  • Revenge: She wants this for her dead father. However...
  • Tell Me About My Father: After Thuring is killed, she realizes that what she really wanted was a chance to know her father, and asks Eisenhorn this.

Tobius Maxilla

Master of the rogue trader Essene, who joins Eisenhorn's motley band in Xenos.
  • Cyborg: Revealed to be mechanical from at least the chest down after being blasted by naval security officers (actually a bunch of Imperial Guard deserters sent to hunt for Eisenhorn).
  • I Just Want to Have Friends: Eisenhorn believes Maxilla is so keen to help him because he is often in the company of his entirely machine crew and misses having flesh-and-blood people to show off his ship (and its associated treasures) to.
  • Undying Loyalty: One of the few people who stuck with Eisenhorn even as he consorts with daemonhosts and disembodied heretics, believing wholeheartedly that Eisenhorn acted for the good of the Imperium.
  • We Can Rebuild Him: His crew servitors take him to have his lower body rebuilt after the "boarding action" in Xenos.

    Other Inquisitors 

Commodus Voke

A puritanical Inquisitor of the Ordo Malleus, whom Eisenhorn ends up working with during Xenos (to their mutual dislike).
  • Character Death: He dies at the hands of Prophaniti near the end of Malleus.
  • Fire-Forged Friends: Downplayed example. Voke initially dislikes Eisenhorn due to their different methods and philosophies, but comes to respect him as Eisenhorn repeatedly demonstrates his competence. By the end of Xenos he’s become a staunch supporter of Eisenhorn, and even asks him to complete Heldane’s training when Voke believes himself to be on his deathbed. In Malleus, he’s willing to answer Eisenhorn’s summons and hear him out about Quixos even after Eisenhorn had gone rogue.
  • In the Hood: Voke is frequently described as wearing a hooded robe.
  • Overt Operative: Voke doesn't believe in stealth or subterfuge, believing that concealing one’s allegiance to the Inquisition is the mark of the radical. When he’s on the case, he openly throws his weight around and makes his status clear because he wants people to know that the Inquisition is in town.
  • Powered Armor: Voke is old and physically frail, so he relies on a powered exoskeleton to get around.
  • Psychic Powers: He's a psyker, and his psychic abilities are clearly stronger than Eisenhorn's from their first encounter.

Golesh Heldane
A face you can trust.
Introduced as Voke's interrogator in Xenos, Golesh Heldane has become a full-fledged Inquisitor in his own right by the time Malleus rolls around.
  • Cold-Blooded Torture: His Modus Operandi for mind controlling people is to use painful mental and physical torture. He seems take pleasure in the process.
  • Facial Horror: A carnodon mauls his face partway through Xenos. By Malleus, he’s had his face surgically reconstructed to exaggerate those scars, resulting in a literal horse face that unnerves friend and foe alike.
  • Continuity Nod: Heldane's presence in the Eisenhorn series is this.
  • Hidden Agenda Villain: He wants to capture the STC machine in First and Only so that he can give it to Dravere who intends to use the Iron Men it creates against Warmaster Macaroth to earn a Klingon Promotion.
  • Hoist by His Own Petard: In Dan Abnett's Warhammer 40,000: Gaunt's Ghosts novel First & Only, Heldane attempts to Mind Control Rawne, but the Ghosts interrupt the torture. Later on, Heldane manipulates the "pawn" near Gaunt and Gaunt notices Rawne acting suspiciously. It turns out that Heldane only succeeded making Rawne sensitive to influence. This alerts him to Heldane's mental presence and the commands he gives to his real pawn, the spy Fereyd. When Heldane sends a command to Fereyd to kill Gaunt's party, Rawne intercepts the message and kills Fereyd first. Heldane, not expecting this, didn't prepare a failsafe in case his pawn was killed. The psychic backlash killed him and destroys Dravere's mobile fortress.
  • Humiliation Conga: His first puppet assassin is unexpectedly destroyed by Corbec, his torture session with Rawne is cut short when Corbec hits him with a thrown stun baton and as he tries to retaliate, Larkin fatally shoots him in the neck. Even worse, his failure to finish his session with Rawne makes him aware of Heldane's mental presence and the commands he gives to Fereyd which in turn leads to Fereyd's death and his loss of the STC machine. If that's not bad enough the psychic feedback not only kills him and his chosen pawn, Dravere, but the ensuing explosion atomizes his body. On top of all of this, the epilogue to the Eisenhorn series makes it clear that he died in obscurity. None of this takes in account all of his defeats in that series as well including the death of his main backer, the radical Grandmaster Osma which wouldn't have been so bad if the former Puritan Grandmaster Rorken hadn't miraculously recovered from his illness.
  • Hypocrite: He accuses Eisenhorn of being radical for using the Malus Codicium. He tries to have Eisenhorn executed... so that he and Osma can use the tome for themselves.
  • Karmic Death: His death by psychic feedback is indirectly caused by his torture of Rawne.
  • Made of Iron: Despite his failings, he shares his mentor's extreme resistance to death including getting his face horribly disfigured by a giant, crazed beast and years later having his legs crushed proceeded by immediately being set on fire by Cherubael. It takes a gunshot wound to the neck to take him down which takes over a day to finish him off. He ends up being killed by being atomized.
  • Nice Job Fixing It, Villain!: His downfall is caused by his arrogance, hypocrisy, radicalism, and a small amount of incompetence. However, he finally falls into this trope when he neglects to make a failsafe against psychic feedback. Had he done so, he wouldn't have indirectly killed Dravere who still had a chance of overthrowing Warmaster Macaroth without Heldane's help. To be fair, though, Heldane was fatally wounded at the time and Macaroth is only considered a slightly better leader than Dravere who should be noted as almost universally hated by his men.
  • Nightmare Face: In-universe; he had his face surgically rebuilt to resemble a horse's between Xenos and Malleus, to inspire fear in the enemies of Man.
  • Not Helping Your Case: He hates "blunt" bigots. He deals with them by using his psychic powers to cause mental and physic discomfort (messing with people's brains to induce vomiting and diarrhea) or he outright tortures them (show them what the warp shows psychics).
  • Offscreen Moment of Awesome: Catching and making an "instrument" out of a high level Imperial Agent like Fereyd without anyone noticing can't be easy.
  • Overly Long Name: His full name is Golesh Constantine Pheppos Heldane.
  • Psychic Powers: He's a powerful psyker, and much stronger than Eisenhorn himself. He even manages to go toe to toe with Cherubael, who Eisenhorn considers a daemon prince in terms of power, for a surprisingly long time. With a sword!
  • Smug Snake: His arrogance causes him to underestimate Gaunt. This leads to him being shot by Larkin. This fatal wound makes him careless later on by overplaying his hand. This leads directly to his death.
  • The Rival: It's obvious Eisenhorn and Heldane despise each other, but Eisenhorn doesn't seem to regard Heldane as a rival, just a nuisance. Only Heldane seems to consider their relationship a rivalry especially once he learns of the Malus Codicium.
  • There Is No Kill Like Overkill: The gunshot wound to the neck was already fatal, but the psychic backlash from his pawn's death atomizes his body and a fortress the size of a small city.
  • Torture Technician: He uses mental and physical torture to manipulate people through various methods of Mind Control. The method and length of the torture as well as he intended goal determines how much a person is put under his control. This bites him in the ass when the Ghosts interrupt his torture of Rawne as it made Rawne aware of his mental presence and commands.
  • Unexpected Character: He originally appeared in Gaunt's Ghosts First and Only, but he shows up in the Eisenhorn Trilogy. Eisenhorn's series explains Heldane's strange equine appearance in First and Only. The "Where Are They Now?" Epilogue is a Call-Forward to his death in First and Only.
  • Villain Ball: His eagerness to obtain the Iron Men STC machine causes him to accidentally reveal part of his true motives to Gaunt through Fereyd. This causes Gaunt to declare that he will destroy the machine forcing a desperate Heldane to have Fereyd attack Gaunt's party. However, he didn't prepare a failsafe in case Fereyd was killed. This leads to him suffering from psychic feedback. To be fair, though, the pain from his fatal wound made him careless.
  • Well-Intentioned Extremist: While he was originally a Puritan, his philosophy eventually changes. He believes that the Imperium must use Chaos against Chaos. He believes that "white" can't beat "black", but that "grey" can beat "black". He believes that Warmaster Macaroth is too pure and that Lord Militant General Hechtor Dravere would be a better leader for the Sabbat Campaign as he is willing to take more audacious risks.
  • Why Don't You Just Shoot Him?: Subverted in Xenos where Heldane shoots a psyker who was weakened after he forced a wall into revealing the location of the Saruthi Necroteuch.

Konrad Molitor

A radical Inquisitor brought onto the investigation of House Glaw. He has a keen interest in the Necroteuch.
  • Evil Gloating: Molitor has Eisenhorn at his mercy near the end of Xenos, but chooses to gloat for several paragraphs rather than finish him off right away. This gives Midas and Bequin enough time to catch up with their boss and rescue him, leading to Molitor’s death.
  • Make It Look Like an Accident: He tries to kill Eisenhorn after ordering the fleet to flatten the Saruthi structure they’re both in, with the intended explanation that Eisenhorn got lost inside and couldn’t escape before the structure was destroyed.
  • Yellow Eyes of Sneakiness: His eyes are consistently described as yellow, and he’s quickly established as a shifty, untrustworthy person perfectly willing to go behind Eisenhorn’s back in pursuit of his own goals. He even tries to murder Eisenhorn near the end of Xenos.

Leonid Osma

Another Malleus Inquisitor; he's introduced as head of the Ordo Malleus' branch in the Ordos Helican in Malleus, and becomes Grandmaster of the entire Ordos Helican partway through Hereticus.
  • Boom, Headshot!: Maxilla vaporizes Osma’s head with a shot from his digital weapon.
  • Cyborg: He has a cybernetic lower jaw. It’s the only part of his head left after Maxilla shoots the rest of it off.
  • Drop the Hammer: Osma’s weapon of choice is a huge power hammer.
  • Hypocrite: In Hereticus, he condemns Eisenhorn as a heretic for his possession of Cherubael and the Malus Codicium, but the questions he and Heldane ask Eisenhorn make it clear that they want the book and the daemonhost for themselves.
  • Inspector Javert: In Malleus, he arrests Eisenhorn on charges of consorting with daemons and causing the Thracian atrocity. Eisenhorn didn’t commit these crimes and repeatedly states his innocence in the three months that he’s held captive, but Osma refuses to believe him. He comes after him once again in Hereticus, and this time Eisenhorn is guilty, though Osma turns out to be no better.


An inquisitor-general stationed on Cadia. Eisenhorn consults her during his investigation into Cherubael’s connection to the Thracian atrocity.
  • Beleaguered Bureaucrat: Cadia is such a hotbed of cult activity that Neve can barely keep up with the day-to-day business of destroying those cults, leaving her sleep-deprived and ill-tempered. She isn’t happy when Eisenhorn shows up asking her to reopen a case that her predecessors closed.
  • Handicapped Badass: She has a bad limp and relies on a crutch to get around her offices. In the field, she uses a lift-assist cane with a built-in grenade launcher instead.


An infamous Inquisitor of the Ordo Malleus, Quixos was once held up as an exemplar of his Ordo by other Inquisitors before he began to dabble with the powers of Chaos and fell from grace. He vanished hundreds of years ago, and was assumed dead by his peers. In reality, he's very much alive...
  • Big Bad: Of Malleus. He orchestrated the Thrachian Atrocity which kicks off the novel's plot to cover up his kidnapping of an Alpha-plus psyker. He’s also the master of Konrad Molitor and the creator of Cherubael the daemonhost, making him indirectly responsible for their crimes.
  • Early-Bird Cameo: He first appears in the prologue of Xenos, but doesn't become directly relevant to the plot until Malleus.
  • Evil Weapon: His daemonic sword, Kharnagar.
  • Hidden Villain: Eisenhorn doesn't learn that Quixos is even alive, let alone behind both Cherubael and the Thracian Atrocity, until fairly late in the book.
  • Horned Humanoid: He’s grown rudimentary antlers as a result of his corruption by the time Eisenhorn encounters him.
  • Master Swordsman: He's described as moving so quickly in swordfights that he can't be seen with the naked eye.
  • Reduced to Dust: He crumbles into dust after Eisenhorn mortally wounds him, leaving behind his empty armour and cybernetic implants.
  • Tautological Templar: He's convinced that only heretics would try to stop him from completing his work, work which even the most radical of Inquisitors would denounce as heretical. Even his last words are to condemn Eisenhorn as a heretic.
  • Well-Intentioned Extremist: His end goal is to create duplicates of the Cadian Pylons, supercharge them with the energies of captive psykers, and use them to collapse the Eye of Terror in on itself. While the goal itself may be commendable, the methods he uses to achieve it—such as fostering Chaos cults to do his bidding, binding daemons into his service, murdering anyone who gets in his way, and committing acts of terrorism and mass murder against the very Imperium he ostensibly serves just to cover up his activities—are nothing short of monstrous.

    Imperial Citizens 

Arnault Tantalid

A fanatical witch-hunter of the Ministorum, Arnault Tantalid has a grudge against Eisenhorn. He comes after Eisenhorn in Malleus, looking to settle the score.
  • An Arm and a Leg: In their final encounter, Eisenhorn cuts off Tantalid’s hand before slicing him in half.
  • Badass Preacher: He’s a gun-toting, Powered Armor-wearing clergyman.
  • The Dreaded: He’s known and feared throughout the Helican sub-sector.
  • Fantastic Racism: He hates psykers, even those that might be of use to the Imperium. Before Malleus, he and Eisenhorn clashed over a group of psychic children that had been kidnapped by slavers. Eisenhorn wanted to free the kids so that they could go on to serve the Imperium, while Tantalid wanted to kill them.
  • Half the Man He Used to Be: Eisenhorn bisects him from the left shoulder to the groin.
  • Villainous Rescue: He kills Beldame Sadia, who had a poisoned and dying Eisenhorn at her mercy, because he wants to kill Eisenhorn himself.
  • Would Hurt a Child: In the backstory, he tried to murder a group of kidnapped children for the crime of being psykers. Though Eisenhorn drove him off, two of the kids were killed in the crossfire.

Crezia Berschilde

A former surgeon and old acquaintance of Eisenhorn’s, Crezia first met the Inquisitor when she operated on him after he lost his hand in a firefight. Eisenhorn seeks her out to treat Medea’s injuries following the attack on Spaeton House.
  • Call-Back: She’s the surgeon who gave Eisenhorn a new hand after he lost the original in the short story Missing in Action.
  • Florence Nightingale Effect: She fell in love with Eisenhorn after performing surgery on him, and though they broke off their relationship long ago, she still has strong feelings for him by the time of Hereticus.
  • New Old Flame: She had a relationship with Eisenhorn between the events of the first and second books, but isn’t introduced—or even mentioned—until book three.

Valentin Drusher

An aging Magos Biologis who has been trapped on the backwater world of Gershom for thirty years. Eisenhorn contracts him in The Magos with the promise of passage off Gershom to any planet he wants. His intellect and dry wit is only matched by his cowardice and crippling self-loathing.
  • And Now for Someone Completely Different: The Magos is told primarily from Drusher's perspective.
  • Amazon Chaser: His ex-wife, Germaine Macks, was a member of the Adeptus Arbites. Fifteen years after their divorce, he still holds a candle for her.
  • Ascended Extra: Drusher originally appeared in the short stories The Curiosity and Gardens of Tycho, which were unrelated to the Eisenhorn series, and became the focus character of The Magos.
  • Butt-Monkey: No one ever hesitates to have a laugh at the poor man's expense. He believes he's this for the universe itself.
  • Cowardly Lion: He's a feeble man, and he's terrified by the prospect of even holding a gun, but when push comes to shove, he'll stand his ground against rogue tyranids, murder servitors, and Cognitae agents. It earns him Harlan Nayl's respect.
  • Fatal Flaw: Low self-esteem. Drusher has a bad habit of thinking the worst of himself, and pretty much rolls over for anyone who kicks him. It is, in part, what cost him his marriage, after his wife got fed up with his self-pity and threw him out.
  • Genius Ditz: Drusher isn't very good with social cues and overthinks pretty much everything, but he's such a brilliant Biologis that he can apply his understanding of animal behaviour to criminal pathology with staggering accuracy.
  • Not That Kind of Doctor: Despite his title, Drusher does not seem to have any ties, previous or current, with the Adeptus Mechanicus, as he's entirely unaugmented and didn't know how juvenat treatments worked until someone told him. Instead, he is simply a freelance, albeit highly qualified, zoologist and botanist.
  • Prematurely Grey-Haired: Drusher's hair had already lost all color before he turned forty.
  • Relationship-Salvaging Disaster: The events of The Magos help him grow enough of a spine to reconcile with his ex-wife.
  • Smart People Know Latin: He's been shown to have at least a decent grasp of High Gothic.

    The Forces of Chaos 

Murdin Eyclone

Also called "the Recidivist," Murdin Eyclone is a heretic who acts as a mercenary, selling his services to various Chaos cults. Eisenhorn tracks him down on the planet Hubris and kills him at the beginning of Xenos.
  • Boom, Headshot!: Eisenhorn shoves a gun into Eyclone’s mouth and blows his brains out.
  • Posthumous Character: In many ways. He dies quickly in the first few chapters of Xenos, but most of what Eisenhorn and company do for the remainder of the trilogy is shaped, or at least initiated, by the clues they picked up from Eyclone.
  • Starter Villain: He was Eisenhorn’s first major nemesis, with Eisenhorn hunting him for six years prior to the events of the book. He’s dead by chapter three.

Pontius Glaw

An infamous heretic who was killed more than two hundred years before the events of the first book; while his physical body was slain, he lives on as a preserved consciousness inside an arcane device called "the Pontius".
  • And I Must Scream: He was trapped in a crystal for centuries, unable to do anything.
  • Deader Than Dead: Eisenhorn destroys Glaw's soul crystal at the end of Hereticus, killing him once and for all.
  • Flechette Storm: By spinning at a high speed, he can fire the blades that make up his cape at people. One of Eisenhorn’s associates is on the receiving end of this: he crumbles like cottage cheese.
  • From Nobody to Nightmare: Pontius was just a bored, thrill-seeking nobleman until he put on a cursed torc one day. The torc corrupted him instantly, and he became the most infamous heretic in the Helican subsector.
  • Not-So-Harmless Villain: Glaw isn’t much of a threat in the first two books. He has no body, after all, and he’s prevented from using his psychic powers in various ways. Then Magos Bure builds him a robotic body, and he becomes far more dangerous, rebuilding his powerbase, wiping out most of Eisenhorn’s associates in a single day, and getting his hands on a dead god’s superweapon that could destroy the universe.
  • Sense Loss Sadness: Being nothing more than a mind preserved in a crystal for centuries has left Glaw unable to experience the finer things in life, like the wind on his face or the taste of fine food.
  • Villainous Breakdown: He flips out when Eisenhorn rips up the Malus Codicium in front of him, and desperately tries to recover the pages. He’s so fixated on this that he forgets Eisenhorn is there, which allows the weakened Eisenhorn to kill him.
  • We Can Rebuild Him: Eisenhorn successfully wrests a great deal of information out of him by promising to have a custom robotic body built for him that his Soul Jar can be mounted in and controlled by. Eisenhorn is true to his word. Which costs him dearly in the end.

Oberon Glaw

The current lord of House Glaw. Though he and his house maintain a front of loyalty to the Imperium, Oberon and his kin are just as heretical as their ancestor Pontius.
  • Big Bad: As the ringleader of House Glaw’s conspiracy to obtain the Necroteuch, he is arguably the main villain of Xenos.
  • Impaled with Extreme Prejudice: He dies from an explosion hurling part of an axle through his skull.
  • Just Between You and Me: Defied. He refuses to tell Eisenhorn anything about his plans, even when he has Eisenhorn helpless and at his mercy.
    Eisenhorn: What is the Pontius?
    Glaw: If you don’t know, I’m hardly going to tell you.

Gorgone Locke

A rogue trader in service to House Glaw, Locke is one of the main antagonists of Xenos.
  • Dies Differently in Adaptation: In the book, Locke bleeds out after being crushed by falling debris, with Eisenhorn literally and figuratively branding him as a heretic as he dies. The videogame has Eisenhorn fatally stab Locke after defeating him in a boss fight, and omits the branding.
  • Torture Technician: He’s a master of the strousine neural scourge, and uses it to torture Eisenhorn for information.


A Chaos Space Marine of the Emperor's Children; he works with the Glaws to recover the Necroteuch in Xenos.
  • An Axe to Grind: Wields a chainaxe, oddly enough, which is a little unusual for a member of the Emperor's Children as they usually prefer elegant blades.


A powerful daemonhost who takes a keen interest in Eisenhorn as the series goes on...
  • Affably Evil: Straddles the line between this and Faux Affably Evil a lot. He speaks in a friendly familiar manner to Eisenhorn whenever they meet, despite the fact that he is always going to be doing something murderously evil.
  • Blasphemous Boast: He mocks Eisenhorn with one in Hereticus. Eisenhorn is not impressed.
    Eisenhorn: The Emperor protects.
    Cherubael: The Emperor craps himself at the sound of my name.
  • Captured Super-Entity: Like all daemonhosts, Cherubael is a powerful daemon bound into a human body and forced to serve a mortal master.
  • The Chessmaster: His reason for ensuring that Eisenhorn is pulled into Inquisitor Quixos' plans was the foreknowledge that Eisenhorn would be the one to free him from Quixos' control. This backfires when it turns out that Eisenhorn doesn't appreciate being used.
  • Cross-Melting Aura: In Hereticus, a priest brandishes an Aquila at Cherubael. It keeps Cherubael at bay for a little while, but then the Aquila melts in the priest’s hands.
  • Dragon with an Agenda: He’s effectively Quixos’s right-hand man, but his servitude is completely involuntarily and he wishes to be free. He manipulates Eisenhorn in order to bring this about.
  • God Guise: Cherubael established a minor cult on Cadia that worships him as a god. He exploits this cult to take measurements of the Cadian pylons for his hidden master.
  • Humanoid Abomination: The chaos entity known as "Cherubael" is a Daemon Prince, meaning it was originally human.
  • Light Is Not Good: His host's eyes radiate a white light, but you shouldn't let that fool you.
    I had always presumed white light to be pure and somehow chaste, to be noble and good. But this whiteness was unutterably evil, chilling, its purity an abomination.
  • Meaningful Name: "Cherub", after a kind of angel most people associate with plump little cheerful creatures; "Bael", after a name for the devil. Perfect fit for a character who embodies Light Is Not Good.
  • Seers: He can see the future to some extent, and foresaw that Eisenhorn would be the one to free him from Quixos’s control a century in advance. He did not foresee that Eisenhorn would enslave him afterward, however.
  • Time Abyss: One account states that he plagued the galaxy for thousands, if not millions of years before being bound.
  • To the Pain: He delivers this charming little threat of torture to Eisenhorn and Bequin in Xenos.
    ‘Let us both be abundantly clear about this, Gregor. You will give me the primer. Either you will hand me the primer now, or I will come over to you and take it. And break every bone in your body. And rape that girl at your side. And break every bone in her body too. And then drag your jiggling carcasses down into the chamber below and string you both up on the hooks, and burn out your agony centers as I wait for the bombardment to flatten this place.’
    He paused.
    ‘Your choice.’


Another daemonhost bound to the same master as Cherubael. Eisenhorn first encounters Prophaniti on Cadia while investigating the Sons of Bael cult.
  • Alien Blood: Its host body bleeds glowing white ichor.
  • Body Surf: He can possess another person whenever his current body is destroyed.
  • Bullet Catch: When Eisenhorn shoots at Prophaniti with a storm bolter, he effortlessly catches each round in his bare hands and tosses them aside. He focuses all of its attention on Eisenhorn to do so, however, leaving him vulnerable to follow-up attacks from the Inquisitor's retinue.
  • Deader Than Dead: Eisenhorn impales Prophaniti with his runestaff and channels so much power through it that he annihilates the daemon outright.
  • Punny Name: It’s a play on the word “profanity”.
  • Super Toughness: His host body can withstand injuries that would kill a normal person many times over, and he takes one hell of a pounding before finally being obliterated by the guncutter’s cannons. Even then, destroying Prophaniti’s body doesn’t actually stop him.


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