Fabius Bile

Fabius Bile was born on Terra and inducted into the III Legion before it became known as the Emperor’s Children. He survived the genetic catastrophe called the Blight that nearly destroyed the Legion and dedicated himself to understanding the flaws within its gene-seed. By the end of the Great Crusade he had become Chief Apothecary. His obsession with perfecting the Astartes eventually pushed him beyond accepted medical practice. He experimented upon warriors from his own Legion and harvested genetic material from other Space Marines while convincing Fulgrim that the Emperor’s Children could be improved beyond their original design. During the Horus Heresy his expertise became valuable to the Traitor Legions. He restored fallen warriors such as Eidolon and Lucius while pursuing increasingly extreme experiments involving gene-seed and the creation of artificial life.

After the Heresy Fabius abandoned any meaningful loyalty to the shattered Emperor’s Children and traveled throughout the Eye of Terror and the wider galaxy. He traded his medical knowledge to warlords in exchange for genetic material and forbidden knowledge while establishing laboratories wherever his work required them. His greatest ambition became the creation of the New Men. These altered humans were designed to exceed ordinary humanity and eventually replace both baseline humans and the Adeptus Astartes. Fabius later recovered a surviving clone of Fulgrim but surrendered the Primarch to Trazyn the Infinite when he concluded that Fulgrim’s influence threatened the independence of his creations. He subsequently entered Commorragh and studied under the Haemonculi before escaping with knowledge that expanded his mastery of fleshcraft.

Fabius has prolonged his existence through repeated cloning and the transfer of his memories into replacement bodies. Over time his identity became distributed across multiple autonomous versions of himself that continued separate experiments while sharing the same fundamental mind and purpose. His creations eventually began venerating him as the Pater Mutatis despite his own contempt for worship and divinity. After the opening of the Great Rift he resumed his work on a vast scale and acquired new genetic material from the Imperium. He later infiltrated Belisarius Cawl’s Zar-Quaesitor and escaped with progenoid material taken from Alpha Primus. Fabius continues seeking a form of life capable of surpassing both humanity and the Space Marines while treating the galaxy itself as material for his experiments.

Appearance: Fabius Bile has pale sallow skin and a tall broad heavily built frame. His eyes are dark. Sparse gray hair hangs in long thin strands from the sides and back of his mostly bald head.

He wears a long tan coat made from thick stitched panels with heavy seams running across the chest and down the skirt. Large asymmetrical shoulder armor sits over the coat with worn bronze and dark purple plating. Thick black tubes and green fluid lines run across his torso and into circular mechanical fittings at his chest and shoulders.

A bulky harness rises from his back with several articulated metal limbs. Some end in syringe-like tools while others support translucent cylinders filled with red and green fluid. Small skulls are mounted at the tops of several reservoirs. His forearms are encased in dark segmented armor with exposed mechanical joints.

His lower body is protected by dark armored trousers and heavy black boots. Utility pouches and small medical tools hang from his waist. He carries a large injector-like weapon with a metal body and a transparent green fluid chamber.

Personality: Fabius is intensely rational and utterly convinced of his own intellectual superiority. He rejects conventional morality whenever it obstructs discovery and considers suffering acceptable if it produces useful knowledge. He has little reverence for gods and long maintained that the powers worshipped by others were merely entities that could eventually be understood. His greatest loyalty is to his work. Even his contempt for Chaos has weakened when compromise became necessary to preserve the future of the New Men. Fabius views himself less as a destroyer than as someone forcing life to evolve beyond its existing limitations.

Fulgrim remains one of Fabius’s most complicated relationships. He once served the Primarch faithfully but gradually came to regard the degeneration of the Emperor’s Children as evidence that Fulgrim had failed them. His decision to surrender Fulgrim’s clone rather than let the New Men fall under another Primarch’s influence showed how completely his creations had replaced the Legion as his central concern. Melusine is one of his most significant creations and possesses a relationship with him closer to that of a daughter than a simple experiment. Trazyn has dealt with Fabius through bargaining rather than friendship while Abaddon values his abilities enough to tolerate his independence. Belisarius Cawl is both a rival intellect and a source of fascination because his work on the Primaris Space Marines provides Fabius with another path of human genetic advancement to dissect and surpass.

Fabius possesses the enhanced physiology of an ancient Space Marine but his body suffers from a hereditary degeneration that repeatedly destroys each physical form he inhabits. He circumvents this through advanced cloning and neural transfer technology. His memories and personality can be copied into prepared bodies through wraithbone-based receivers adapted from Aeldari technology. His true expertise lies in genetics and surgery and cloning. He can alter Astartes gene-seed and create enhanced human strains and rebuild damaged transhuman bodies while combining biological material from radically different sources. His experience also makes him a dangerous combatant despite his preference for scientific work over straightforward battle.

The Chirurgeon is permanently attached to Fabius’s back and supports both his research and survival. Its articulated limbs carry surgical blades and saws while the device circulates Warp-infused ichor through his body and helps shield him from injury. Fabius also carries the Rod of Torment which can overwhelm a victim with extreme pain and a Xyclos Needler that fires highly toxic darts. His laboratories contain cloning vats and genetic archives and specialized machinery accumulated across thousands of years. His principal vessel is the Vesalius while the sentient gunship Butcher-Bird provides personal transport and battlefield support.