Garviel Loken was the Captain of the 10th company of the Luna Wolves Space Marine Legion during the latter half of the Great Crusade. After distinguishing himself in battle, he was inducted into the Mournival, the advisory council to the Warmaster Horus, and from this position was a first-hand witness to the series of events that would result in Horus' damnation and the beginning of the Horus Heresy.
|This page contains spoilers for:||Horus Heresy Series|
Long an upwardly mobile officer, and friend to senior Captain Tarik Torgaddon, Garviel Loken was inducted into the Mournival after the pacification of Sixty-Three-Nineteen, the first Mournival member not to be a 'son of Horus', the term for those Luna Wolves who bore a facial similarity to their Primarch.[1x]
The bloodline of Cthonia was strong in Loken, and as a result he had pale, craggy features, short fair hair, grey eyes and a slightly freckled face. His tally of glories reckoned to be in line after those of Ezekyle Abaddon and Luc Sedirae[1x], Loken's martial record was unquestionable.
His strength of character was vouched for by Torgaddon and no less a personage than the Primarch of the Imperial Fists, Rogal Dorn, who was said to appreciate Loken's calm attitude. During a brief visit to the Vengeful Spirit, before his Legion's return to Terra, Dorn counseled Loken to always speak his mind as he saw it, advising that his humanity would balance Abaddon's choler and Horus Aximand's "lofty disdain," when the Mournival was advising the Warmaster.[1x]
For a time Loken enjoyed a privileged position at the Warmaster's side. His relationship with his fellow Mournival brothers was cordial, and he was encouraged from his oath of service to speak as an equal.[1x] Loken and the other members of the Mournival continued to get along well until the battles on Davin and Aureus, often in these happier times even play fighting with his brothers.
However, as it became apparent that more and more activities amidst the Astartes of the legion were becoming increasingly clandestine and out of character, Loken became suspicious and began to investigate. After the Warmaster's botched attempt at peaceful negotiations with the Interex[1x], the Luna Wolves were renamed the Sons of Horus, confirming Loken's fears that the old ways of the legion were being forgotten.
His research into the turbulent ancient history of Terra (in ancient tomes such as The Chronicles of Ursh)[1x] at the behest of his troubled mentor Kyril Sindermann, and his sponsorship of the rebellious remembrancer poet Ignace Karkasy put him at odds with some of the most powerful and influential Astartes in the 63rd Expeditionary Fleet, including Chaplain Erebus of the Word Bearers, and even the Warmaster himself.[Needs Citation]
When Horus was injured on Davin, Loken and Tarik Torgeddon landed on Davin to try and find the weapon used to wound him. Recognizing the blade as being of Kinebrach origin, he realized that it had been stolen from Xenobia, the Interex's capital city. He and Torgaddon realized Erebus's treachery, but were unable to stop him from corrupting Horus.[Needs Citation]
Horus eventually saw fit to have Loken eliminated during the betrayal at Isstvan III, placing him at the front of the doomed invasion force alongside his friend and fellow marginalized Mournival member Torgaddon. When the virus bomb strike failed to kill all of the loyalist forces on the surface, the entirety of the traitor legions were eventually deployed to wipe out the survivors, who had fortified the Precentor's Palace under Loken's, Torgaddon's, and Saul Tarvitz's command. Given command of the loyalist Astartes of the XVI Legion, Loken declared that they were once again the Luna Wolves.
Loken fought to the last as a loyal servant of the Emperor and refused to give any quarter to those who had betrayed the Emperor in favour of Horus. After witnessing the death of Tarik Torgaddon at the hands of Horus Aximand he was wounded on Isstvan III by his old comrade Ezekyle Abaddon, and was believed to have perished in the final orbital bombardment of the planet, along with the last surviving loyalists. Loken and Torgaddon's deaths (supposed in the case of former) marked the removal of one of the final obstacles to Horus' great ambitions.
Although it initially appeared that Loken perished in the final bombardment of Isstvan III, many months later a team of Astartes led by Nathaniel Garro on the orders of Malcador the Sigillite were sent to the planet to recruit a single warrior.[4a]
The wars of the Horus Heresy had long since moved onwards, leaving Isstvan III a shattered and desolate graveyard. In these circumstances, the one surviving and abandoned Astartes left upon the world had fallen to a form of madness, believing himself rejected by death and unable to remember his name. He took upon himself the name Cerberus and believed himself to be the only remaining loyalist, (a Legion of One), until he was confronted by Garro and his men.[4b]
Initially hostile to a group that he perceived as traitors, the lone astartes forced Nathaniel Garro to engage him in single combat, and Garro proved unable to overcome him physically. Thus Garro appealed to the warrior's faith and duty and reminded him of his true identity.[4c]
In this moment of lucidity, Loken remembered himself and agreed to go with them.[4c]
Before leaving Isstvan, Garro confided to Loken that he was the final recruit the Sigillite had ordered them to find, and that they would learn the true purpose of their order when they returned to Terra.[4d]
Loken's first mission for the Sigillite took him to Caliban, alongside his former comrade, Iacton Qruze. The mission was to ascertain the strength and loyalty of the Dark Angels under Luther and if possible the location and loyalty of Lion El'Jonson. Loken allowed himself to be captured by the Dark Angels, confident Luther himself would interrogate him. He was correct and during his conversation with Luther, one of the Watchers in the Dark gave Loken a small portion of its telepathy abilities to read Luther's mind. To Loken's shock it seemed Luther himself did not know where he fell in the Horus Heresy, only that he was against the Lion. This complicated the mission as no one knew the loyalty of the Lion. Loken escaped his cell with the help of the Watcher but encountered a lone Dark Angel sentry. Loken fought not to kill, but subdue and capture - he would not kill a possibly loyal Space Marine. Qruze intervened with the help of Cypher who was an old friend of both from their days in the Luna Wolves. Qruze shot and killed the Dark Angel, much to Loken's horror. He confronted Qruze about this unnecessary murder, telling Qruze this death may have tipped the scales of loyalty against the Imperium. Qruze casually dismissed it stating "He will not be the first loyal servant of the Imperium I've killed, nor do I think the last." The two made their escape from the Dark Angel dungeon with the help of Cypher, who ultimately refused their offer to join them as one of Malcador's agents. Instead he would serve in the shadows, loyal but unremembered.
Seeking a refuge, Loken occupied a small disused dome of the Somnus Citadel (formerly the domain of a Sister of Silence who had perished on Prospero) and devoted his time to restoring her small garden. In doing this, he also restored a small measure of peace to his fragile psyche. During his time here, he was "visited" by his old friend Torgaddon, still very much dead. Torgaddon reminded Loken of the oath he swore when he joined the Mournival, even if the Mournival itself no longer existed: to uphold the safety of the Imperium and to loyally serve the Emperor of Mankind above any Primarch. Torgaddon also warned, ominously, that the traitors had done something terrible to him after his death, and only Loken could right it. Loken, reinvigorated, left the garden and told Qruze that he was ready to undertake his next mission for the Sigillite.
Loken's ultimate fate is unknown, but in a conversation with Epimetheus, one of the original Grand Masters of the Grey Knights, during the Pandorax Campaign, Abaddon questions the Grey Knight's lineage. Abaddon quickly dismisses several possibilities, stating he knows he's "not the Ultramarine Rubio," nor any of the other 'traitors' from the Traitor Legions - e.g., Nathaniel Garro of the Death Guard or Macer Varren of the World Eaters.
Abaddon also concludes that Epimetheus can't be his "erstwhile brother," as he personally saw that Grand Master dead. This suggests that at least one, and possibly both, of the former Luna Wolves - Loken and Qruze - became Grand Masters of the Knights, but at least one was killed by Abaddon.
However, Qruze was killed aboard the Vengeful Spirit during the Heresy, which makes it more likely that Abaddon was referring to Loken. Alternatively Abaddon could have been refering to Severian, an old rival from the time of the Luna Wolves. 
- Cerberus, the name adopted by Loken after the battle of Isstvan III, is the dog who guards the Underworld in classical mythology. Torgaddon joked that it was an appropriate appellation for Loken, the last Luna Wolf standing sentry over the graveyard of Isstvan III.
- 1: Horus Rising (Novel) by Dan Abnett
- 2: False Gods (Novel) by Graham McNeill, [Needs Citation]
- 3: Galaxy In Flames (Novel) by Ben Counter, [Needs Citation]
- 4: Garro: Legion of One (Audio Book) by James Swallow
- 5: Grey Angel (Audio Book) by John French, Time 00:10 - 35:24
- 6: Luna Mendax (Short Story) by Graham McNeill
- 7: Forge World
- 8: Pandorax (Novel) by C.Z. Dunn, [Needs Citation]
- 9: Vengeful Spirit (Novel) by Graham McNeill, Chapter Twenty-Four