Among the Xenos populations within this area were the Cythor Fiends along with other creatures out of primal nightmares such as Togoran Bloodreeks. Among the native inhabitants of the Ghoul Stars are creatures so alien that they seem supernatural. This region of space was once home to a number of Human inhabited worlds. However, an ancient threat is believed to be responsible for the destruction of these planets and accounted for the large number of formerly human inhabited Dead Worlds.[2b] The inhabitants of the Ghoul Stars have been described as being supernatural and pose a threat to the galaxy. Among the most horrifying of threats native to this area of space is the Necron Bone Kingdom of Drazak.
The Imperium has only a light presence in the Ghoul Stars since the Horus Heresy, and it is known that no Imperial expedition ever returned from its deeper regions. However, the Death Spectres Chapter maintain a constant vigil over the Ghoul Stars in ensuring that the menace posed by its inhabitants do not threaten the galaxy again. The Deathwatch of Fort Pykman also watch the region, while the Carcharodons would also periodically pass through the region.
Some regions of the Ghoul Stars were conquered by the Imperium during the Great Crusade; Nostramo, homeworld of the Night Lords, was located at the border of the Ghoul Stars.[9a] In 002.M31, Raven Guard elements were sent on a crusade into the Ghoul Stars, where they became renegades, forming the Ashen Claws.[9b] Most of the Imperial presence in the Ghoul Stars was destroyed during the Horus Heresy, with many worlds being depopulated during campaigns such as the Scouring of the Nostramo Sector.[9a]
In circa late M34, a great threat from the Ghoul Stars referred to as the Pale Wastings after the Nova Terra Interregnum is known in the records of the Imperium. What few records remain of this event suggest that this threat was both a "Star-spawned plague" that swept across many worlds and as "Nightmare engines" that slaughtered entire sectors. The Novamarines along with eleven other Chapters were dispatched to combat this menace in what was believed to be an apocalyptic struggle. Among the only survivors were the Novamarines with the others being lost, though the only evidence of this in later years was an ancient stelae located in the Imperial Palace on Terra itself that refers to the bravery of the Chapter.[2b]
In 601.390.M38, the Marines Errant Space Marines entered into the Covenant of Ecale with the legendary Sia'hadn Ecale of the Rogue Trader House of Ecale. Between this point and until 433.M38, the entire weight of the Chapter was added to the Rogue Trader's own army that went on a voyage of war and exploration into the Ghoul Stars that lasted more than forty years.[2a] In 977.M41, an Eastern splinter of a Tyranid Hive Fleet passed through this region where it became disorientated and twisted before heading towards the Orask system.
Upon his appointment as High Marshal, Helbrecht of the Black Templars is known to have led a Crusade in 989.M41 against the Cythor Fiends that resided within the Ghoul Stars. Within the span of eight years, the xeno populations of the outlying systems had been exterminated, whereupon the Crusade pushed to the alien homeworld. However, upon reaching the core systems, the Black Templars discovered them to be empty with no trace of the aliens found. Before the mystery could be fully investigated, the Black Templars were called to aid Armageddon that was being besieged by the Orks.
- Iquathan Deeps
- Sarvakal Cluster
- Nostramo Sector (border zone)[9a]
- Thramas Sector (border zone)[9a]
- Thirsis Subsector (border zone)
Known individual planets
- 1: Codex: Black Templars (4th Edition), pg. 44
- 2: Imperial Armour Volume Nine - The Badab War - Part One
- 3: Codex: Space Marines (5th Edition), pg. 26
- 4: Codex: Necrons (5th Edition), pg. 15
- 5: Imperial Armour - Apocalypse II, pg. 79
- 6: Deathwatch: The Outer Reach pgs. 136–137
- 7: Codex: Deathwatch (7th Edition) — The Heraldry of the Honoured
- 8: Codex: Black Templars (9th Edition), pg. 20
- 9: The Horus Heresy Book Six - Retribution,
- 10: What Wakes in the Dark (Short Story)
- 11: Carcharodons: Outer Dark (Novel), Chapter 3
- 12: The Eternal Crusader (Novella), Chapter 1