Garviel Loken - History: Captain Loken's courage and strength made him an officer on the rise in the Luna Wolves from the start. Loken's close friend Captain Tarik Torgaddon mentored Loken in several aspects of his martial life and eventually was responsible for his induction into the Mournival, the group of informal advisers from the Luna Wolves Legion who served Horus as his closest companions.Loken was inducted into the Mournival after the Luna Wolves' campaign on the world of Sixty-Three-Nineteen, bringing it into Imperial Compliance. Loken also had the distinction of being the only member of the Mournival not to share a direct facial similarity to the Warmaster Horus.As a member of the Mournival, Loken was to be the Warmaster's "naysmith", offering a counter-argument to those plans of Horus he found fault with and was intended to provide an advisor for Horus who possessed a calm and imperturbable nature. During this time Loken enjoyed a privileged position within the Warmaster's inner circle.When the Luna Wolves were conducting Imperial Compliance operations on the world of Sixty-Three-Nineteen at the end of the Great Crusade, a strange voice appeared on the Vox radio communication devices used by the Luna Wolves, which was actually the voice of a daemonic entity of Chaos.The walls between the physical world and the Immaterium were unusually thin in that region of Sixty-Three-Nineteen where the remaining hold-outs to the Imperial conquest were holed up, though the Imperial forces during the Great Crusade had been kept deliberately unaware of the existence of Chaos or the terrible daemonic dangers of the Immaterium by the Emperor and his Primarchs. The voice only identified itself as "Samus" and warned against the oncoming invasion by the Luna Wolves.The Luna Wolves chased the source of the communication into a mountainous region of the planet. While there, Sergeant Xavyer Jubal of Loken's 10th Company became possessed by the Chaos Daemon Samus, and transformed into what was described by witnesses to the event as a bloated monstrosity, trailing armour plate like metal rags, leaking pus and blood, which proceeded to attack his fellow Astartes.After a fierce confrontation, Captain Loken was able to subdue and ultimately kill the deranged, mutated form of Jubal. This confrontation would begin to stir within Loken a deep disquiet that perhaps the Imperial Truth was in error, as was everything he had been taught about religion and the supernatural being nothing more than superstitions rightly cast off by Humanity.After the terrible events on Sixty-Three-Nineteen, the Luna Wolves were sent to reinforce the Emperor's Children on a planet later nicknamed "Murder" by the Imperium for the sheer ferocity of the arachnoid xenos who called it home. The Emperor's Children had arrived at Murder in order to investigate the disappearance of a company of Astartes from the Blood Angels Legion. It was on Murder that Loken and his Mournival brother Tarik Torgaddon met and befriended Captain Saul Tarvitz of the Emperor's Children.It was at this time, after the completion of the war on Murder and soon after the collapse of Imperial relations with the Interex due to the machicnations of Erebus and the Word Bearers, that the Luna Wolves were renamed the "Sons of Horus," a suggestion originally made by the Emperor at the Triumph of Ullanor, in order to clearly stake the Warmaster's claim to superior authority over all the other primarchs. Horus had at first been reluctant to aggrandise himself in such a manner, but finally made the change after consulting with his greatest friend among the other primarchs, Sanguinius.The relationship between Loken and his Mournival brother First Captain Ezekyle Abaddon was always strained as his calm, thoughtful personality constantly clashed with Abaddon's volcanic temper and gruff nature. Despite this, they stood together with Horus as he led an attack on rebel Imperial forces on the moon of Davin.When the Warmaster was mortally wounded in battle there by the Nurglite former Planetary Governor of Davin, Eugen Temba, who used a Chaos-infused relic blade known as the Kinebrach Anathame to poison Horus with a Nurgle-spawned toxin that not even his superhuman immune system could defeat, it was Loken who vocally and absolutely opposed the idea of taking Horus to a Chaos temple known as the Temple of the Serpent Lodge on the world of Davin to be healed by shamans who were essentially Chaos Sorcerers.While Abaddon and Horus Aximand opposed him in their desperation to save Horus Lupercal's life by any means necessary, Tarik Torgaddon stood with Loken in believing that such a violation of the Imperial Truth could only lead to even greater harm than the Primarch's death. The rift in the Mournival over this issue nearly came to violence, but Loken ultimately gave into the broader Legion's feelings on the issue and he chose to wait and see the result.