Spear, the Black Pariah - Within Imperial history, there has only been one known so-called "Black Pariah" to have ever existed. He was a former Imperial Assassin by the code-name of "Spear," who lived during the time of the Horus Heresy. Born as a human Untouchable, he was captured by the Silent Sisterhood and brought to Terra, where Clade Culexus experimented upon and augmented him in an attempt to create a more powerful and deadly form of Culexus Assassin. It is not known whether these augmentations or his unnatural abilities made him a Black Pariah. Spear was eventually deemed too unstable and dangerous by his clade's masters to be left alive. He was placed in the care of the Sisters of Silence and was sent aboard one of their lone vessels, bound for the heart of a nearby sun. Unfortunately, this vessel was intercepted by a Renegade vessel carrying the Dark Apostle Erebus of the traitorous Word Bearers Legion. Boarding the Sisters' vessel, the Word Bearers killed all aboard, with the exception of Spear. Sensing the usefulness of such a unique specimen, Erebus found a new purpose for his captive. He forced Spear to undergo a painful and vile Chaotic ritual, in which a minor daemon from the Immaterium was bonded with the former assassin. This bonding created a highly dangerous apex predator -- a "counter-psyker" -- capable of redirecting a psyker's attack directly back upon them. In order to utilise this ability, the Black Pariah first had to obtain a sample of his target's blood. This was a necessary component that helped him synchronise with his target's psionic abilities in order to reflect their attacks. Two standard years later, following the events of the Drop Site Massacre on Istvaan V, Erebus tasked his deadly minion to assassinate the Emperor. Spear spent an inordinate amount of time in order to painstakingly reach his ultimate goal -- a document that possessed a minute drop of the Emperor of Mankind's precious blood. Spear obtained the document on the world of Dagonet, bringing him into direct conflict with an Imperial Execution Force composed of Imperial Assassins from every clade, who were attempting to assassinate the Traitor Primarch Horus. Though the mission was ultimately deemed a failure, resulting in the death of all its members, this confrontation resulted in the Black Pariah's destruction. Horus later chastised Erebus for his audacious plan to assassinate the Emperor, declaring that when the opportune moment finally dawned, it would be him -- and him alone -- who killed the Master of Mankind.