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Stygies VIII Sicarian Rustwalkers.png|Stygies VIII [[Sicarian Ruststalker]]s
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Stygies VIII Sicarian Infiltrators.png|Stygies VIII [[Sicarian Infiltrator]]s
Stygies VIII_Tech-Priests.png|A pair of Stygies VIII [[Tech-Priest]]s Note: The pitch black ceremonial robes and the crimson coloured armour plate.
Stygies VIII_Legio Cybernetica.png|A Stygies VIII Tech-Priest of the ''[[Legio Cybernetica]]'' responsible for controlling their legions of [[Battle-Automata]]
Stygies VIII_Kastelan Robot.png|A Stygies VIII [[Kastelan Robot]]

Revision as of 18:23, September 1, 2017

Stygies VIII, also known as "The Ever-staring Cyclops," is an Imperial Forge World of the Adeptus Mechanicus that is located on the seventh and largest moon orbiting a massive gas giant on the outer fringes of the Vulcanis System in the Segmentum Pacificus of the Milky Way Galaxy. The planet is currently home to the Legio Honorum, a Loyalist Titan Legion also known as the "Deathbolts." The moon was previously home to both the Legio Vulcanum I and Legio Vulcanum II, but both of those Titan Legions turned Traitor during the Horus Heresy. Even before the Heresy it was very rare for a Forge World to be home to more than one Titan Legion.

Stygies VIII is a large Forge World that produces everything from Imperial Guard infantry weapons and battle tanks to the mighty Battle Titans of the Collegia Titanica. It is known that Stygies VIII is a Production Grade II-Extremis Forge World with a Tithe Grade of Aptus Non, meaning it pays no tithe to the Administratum, as its industrial output is considered of potent strategic value for the Imperium of Man in and of itself. The forge-cities of Stygies VIII are known to be the homes of some of the best munitions artisans in the Imperium and they produce gun barrels, recoil dampeners, and propellent chemicals second only to Mars itself in quality.

The Tech-Priests of Stygies VIII have an infamous reputation for their continued pursuance of forbidden xenos technology. Such is their curiosity, they wage war against the alien races of the galaxy not to conquer, but to study. Their dangerous yearning for the war-tech of other races is often overlooked, for Stygies VIII provides a great deal of vital war materiel for the surrounding systems, and in these tempestuous times the Imperium cannot afford to lose it -- even the High Lords of Terra have deemed its continued existence vital. Even with that official sanction, a secret war unfolds upon Stygies VIII. Within its yawning reliquary-halls, battles between Deathwatch Kill-teams and radical Tech-Priests are still a disturbingly frequent occurrence. There are those amongst the Stygian priesthood who have taken their obsession with xenos war-tech to another level entirely, breaching the ancient webway portals of nearby Vulcanis III and taking entire war processions into the labyrinth dimension of the Eldar. They seek nothing less than to find the Black Library, plunder its boundless riches of knowledge and return triumphant to Stygies VIII -- even if they have to cut their way through Eldar Harlequins, Chaos Space Marines and worse to achieve their goal.


Stygies VIII is the moon of a ringed gas giant in the binary star system of Vulcanis. It lies far to the galactic north of Terra and perilously near the Eye of Terror. Stygies itself almost fell to heretic forces in the times of the Horus Heresy, only being saved by the intervention of the enigmatic Eldar race, who had their own sake in seeing that the Forces of Chaos did not gain access to such a strategic treasure which might turn the Heresy in Warmaster Horus' favour. This event has led to Vulcanis being the home of a secretive sect within the Adeptus Mechanicus known as the Xenarites. The Xenarites are dedicated to the study and exploitation of alien technology, a policy which most Tech-Priests find highly offensive. The Xenarites point to the intervention of the Eldar to assist the true followers of the Machine God as a sign that even they are subject to his will, and that it is their sacred duty to study them. Aware of the antipathy of their colleagues, the Xenarites pursue a policy of covert study, often despatching cohorts of Skitarii to garrison alien sites instead of bringing artefacts back to Forge Worlds for study as prescribed by doctrine. It is not unusual for Xenarite expeditions to come under attack from alien populations, planetary garrisons, even the Skitarii Legions of other Forge Worlds. Open war with Imperial authorities is not unknown -- these regrettable occurrences have only served to drive the Xenarites deeper underground.

Notable Events

  • The Xenarite Schism (335.M36) - Stygies VIII comes under attack from dozens of Deathwatch Kill-teams when news of the Xenarites' dabblings with alien technology reaches the Ordo Xenos. The Adeptus Mechanicus on Stygies VIII are forced to employ radical measures in order to survive the ensuing purges.
  • The Unknowable (991.M41) - Skitarii from Stygies VIII are sent to the diluvian-class world of Magogue when the planet's industry dries up its oceans to reveal Necrontyr architecture. The Skitarii fight valiantly against the Necrons of the awakening tomb complexes, allowing the planet’s islander people to evacuate to a man, but are badly outmatched. Only their commanding Tech-Priests, hunting for knowledge behind the lines, escape the ensuing carnage. However, in doing so they clash with Trazyn the Infinite. One by one the Tech-Priests are collected in stasis fields and displayed as part of a monument to Magogue's fall.

Stygies VIII Appearance

Stygies VIII Iconography

Ryza Forge World

The official Imperial stamp of the Forge World of Ryza

The stark white icon of Stygies VIII stands out from the dark robes of its warriors. It symbolises not just enlightenment, but the acquisition of knowledge no matter how steep the cost.

Stygies VIII Forge World Colours

Stygies VIII has been accused of heresy in the past. To show that its faith in the Omnissiah is pure, its heraldry incorporates the colours of Mars, albeit redistributed. The bulk of Stygies VIII's Skitarii wear long pitch black robes of endless night, crimson armour plate the sacred colour of Mars and burnished steel cybernetics. Should such a warrior shed his robe, he could almost pass for one of Mars' cohorts -- a similarity Stygies has exploited many times. Likewise, the deep red of the Cult Mechanicus is proudly displayed on the armour plates of the Stygian Kastelan Robots and the Tech-Priests who command them, with icons and glyphs proudly picked out in white. The officers of Stygies VIII fight at the forefront of the war for enlightenment. When their red, silver and black heraldry is sighted near an excavation or quarantine zone, the treasures inside will be seized in Stygies' name, whatever it takes.

Manufactoria Capabilities

Stygies VIII was once one of only three known Forge Worlds capable of producing Vanquisher Cannons on a large scale. After the Forge World of Tigrus was overrun in the 35th Millennium by the Ork Warlord Arrgard the Defiler and the Forge World of Gryphonne IV was consumed by Hive Fleet Leviathan, Stygies VIII became the sole known producer of Vanquisher Cannons. The forges of Stygies VIII are also known for producing the most common pattern of Manticores used by the Imperial Guard.

Canon Conflict

The location of Stygies VIII has been listed as being located in three different Segmentae according to different sources. In Imperial Armour Volume One its location is given as the Ultima Segmentum, in White Dwarf 260 (UK) it is listed as being in the Segmentum Obscurus. In Forge World's Horus Heresy - Book One: Betrayal and most recently the Codex: Adeptus Mechanicus - Skitarii, it is shown on galaxy maps as being located in the Segmentum Pacificus. As the latter source is the most current of the four sources to be released, Stygies VIII is listed above as officially located in the Segmentum Pacificus.


  • Codex: Adeptus Mechanicus - Cult Mechanicus (7th Edition), pp. 27, 84-86, 88, 90
  • Codex: Adeptus Mechanicus - Skitarii (7th Edition), pp. 31, 37, 39, 78-84
  • Imperial Armour Volume One - Imperial Guard and Imperial Navy, pp. 8, 11, 31-46, 178
  • The Horus Heresy - Book One: Betrayal (Forge World Series) by Alan Bligh, pg. 11
  • White Dwarf 260 (UK), pg. 65


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