Vicente Sixx - Treachery: With the primarch's blessing, implantation of the Raptor gene-seed was increased, but due to the limited capacity of Ravendelve's infirmary, each generation of Raptors was limited to a hundred individuals before steps could be taken to increase productivity. Unknown to Sixx and indeed a great part of Legion command, including the XIX Legion's primarch, Ravendelve's garrison had been infiltrated by Alpha Legion Legionaries having taken the face and identity of fallen Raven Guard at Isstvan V.These double-agents most notoriously included one of the Raven Guard's senior officers: Commander Agapito, designated messenger of Corvus Corax and military liaison between Sixx, Orlandriaz and Legion headquarters, or so at least some were led to believe. These infiltrators were in constant contact with other elements on Kiavahr, namely one of the XX Legion's twin-primarchs -- Omegon -- who directed the operations from afar.Calling upon his allies within the Dark Mechanicum, Omegon devised a mean to sabotage Sixx's work. Well hidden in the underground network of Nabrik, Kiavahr's main city, wheels were set in motion to unravel the Raven Guard's efforts. Whilst this operation largely stayed secret, Commander Branne was tipped off as the rise in non-Legion and non-Mechanicum communications clearly indicated something was bound to happen.For reasons of his own, Branne chose neither to warn Corax, nor Sixx or any other officer of the Raven Guard. By this time, the Raptor company already numbered five hundred warriors and they had been tested in battle against an outpost of the Word Bearers Traitor Legion.Thanks to the continuous improvements of Sixx and Orlandriaz -- both on the gene-seed itself and its implantation procedures, the overwhelming majority of recruits had been transformed with no physical consequences or side-effects, and even rejection rates were non-existent as the gene-seed allowed the organs to be grown naturally inside the novitiate's body.Through Sixx's and Orlandriaz's efforts, the newly named Raptor Company began to form at a rate never attained before: fifty solar days to turn an unaugmented Human adolescent into a trained and combat-ready Legionary.When a diversionary attack was launched against Ravendelve to disturb the implantation progress, Sixx unwillingly helped the Alpha Legion gain access to the gene-seed storage as the Raven Guard sergeant charged with securing the infirmary was in truth also one of the infiltrators.Handing the infiltrator his personal data-spike so as not to be disturbed whilst he implanted the new gene-seed into yet another batch of recruits, Sixx gave the Alpha Legion access to what they coveted the most. Yet the gene-seed was not stolen on that occasion, but tampered with: the infiltrator introduced a virus which would lay dormant within the gene-seed, awakening only after implantation had been successful.Its true effects were unknown to the infiltrator, and perhaps even to its creators within the Alpha Legion's Order of the Dragon, but the Raven Guard and those recruits implanted with the corrupted gene-seed would quickly discover the truth of what was intended.The next one hundred recruits to be augmented received the virus-corrupted gene-seed which triggered uncontrollable genetic mutations in the Raptors' bodies that manifested simultaneously and in the same way for all the afflicted: a tightness in the chest and a flaming agony that locked limbs tight in place which inevitably caused the Raptor to fall to his knees before a creeping and burning pain crawled up their bodies.Horrified by these sudden changes, Sixx and Orlandriaz suspected a sudden manifestation of non-Human genes that had lain dormant in the gene-seed and did everything to alleviate the pain of the Raptors: conducting emergency operations to those worst afflicted, amputating vestigial tails that had unexpectedly grown, cutting claws, filing teeth that suddenly pierced gums.Some Raptors were mad with pain and as a precautionary measure, Corax ordered the Raptors put in the cages of Sixx's former animal lab-experiments. Tormented by this turn of events, Sixx promised the Raptors that he would do everything to revert their condition, but even with the primarch's help he did not know where to start looking and even to his own ears his words rang hollow.With more than a thousand Raptors now incapacitated, Legionaries from the Talons were ferried down from Ravenspire to secure and guard the compound. This proved to be a wise decision as within the week Ravendelve was attacked by secessionist elements stirred up by the agents of the Alpha Legion.