|Unclear, currently being repopulated
|Thousand Sons (Chaos)
|Former Dead World and Adeptus Astartes Homeworld
Prospero was the Homeworld of Magnus the Red and his Space Marine Legion, the Thousand Sons. Devastated and depopulated during the Horus Heresy in M31, Prospero remained a Dead World until M42, when the Thousand Sons returned to rebuilt it.
Prospero was a desolate, dark planet and was chosen by its inhabitants because of its distance from Terra. Mutants and Psykers lived in reclusion and study, and Magnus fit in well with this group due to his incredible psychic potential.[Needs Citation]
In the end, the only good thing about Prospero was its remoteness, which made it easy to hide on. It had one major city, Tizca, a gleaming city of white marble, with spires reaching into the sky. It was situated on the most central of the many mountains of the planet, nourished by underground hydroponics and techno-psychic collectible arrays providing sustainable energy. All the towers were gleaming and there were soaring obelisks and towering pyramids.[Needs Citation]
When Magnus arrived, he crashed into the central plaza of the city. The city was very vulnerable from attack from above, but no one seemed to notice this until Leman Russ came and bombarded the planet. He attacked the planet with extreme viciousness and devastating results, slaughtering all he could find. In the end, after a grueling duel between the two primarchs, Magnus cast spells that took all of the great city, his marines, and his precious libraries to a new Homeworld, the Planet of Sorcerers.[Needs Citation]
Later in the Heresy, the White Scars under Jaghatai Khan arrived to investigate what had transpired. They found no survivors from either side and the vengeful ghosts of slain Thousand Sons wandering the ruins of Tizca. The Khan was confronted by a shade of Magnus, who discussed both of their successes and failures and may have been tempting his brother to join the forces of Chaos. After refusing Magnus, Jaghatai then refused the newly arrived Mortarion and the two Primarch's battled as their fleets clashed in space. After a brief but intense battle between Astartes warships, the Death Guard disengaged.
10,000 years later, Prospero had become a hotbed of Warp activity ever since the Planet of the Sorcerers had emerged close to it following the Siege of the Fenris System. Upon the soil of Prospero the Space Wolves and Thousand Sons again came to blows as Njal Stormcaller attempted to rescue a force of Space Wolves 13th Great Company from Magnus the Red. Soritarius was again assaulted shortly after, this time by the Dark Angels and Grey Knights who sought to foil a ritual of the Thousand Sons.
Currently the world is part of Magnus' New Kingdom and the Daemon Primarch has ordered the rebuilding of his devastated home. However he does not want Prospero rebuilt to its former glory, lost in the Horus Heresy, but instead as an anvil, designed to hammer out the tools of war.
At least one indigenous species on Prospero was known to have been hostile and extremely dangerous to human life. The psychneuein, a species commonly found on Prospero, was a major threat to the early settlers of Prospero and continued to present a problem to the inhabitants of the world all the way up to the end, when the planet's entire ecosystem was destroyed by planetary bombardment.[Needs Citation]
The psychneuein reproduced by implanting eggs into a host's brain psychically. An infected host would have no idea they'd been implanted until the eggs began to grow, causing severe pain and ultimately, death as the eggs hatched. On only one known occasion has a victim been successfully cured of the implanted psychic eggs. An archaeologist, living in Tizca, had been implanted while outside the city on a day trip. She later collapsed and was taken to a hospital where a team of highly skilled Thousand Sons Astartes were able to use their powers to remove the eggs from her brain in a form of psychic surgery.
Prosperine Lynxes, another native species of fauna, were driven extinct by the Burning of Prospero. More akin to a saber-toothed cat than a Terran lynx in appearance, these large felines were speckle-striped, hugely muscular, and stood chest-high to an Astartes.
- The Desolation of Prospero - The expanse of the planet outside Tizca. Though barren, it was considered beautiful.[2a]
- 1: Codex: Eye of Terror, [Needs Citation]
- 2: A Thousand Sons (Novel), [Needs Citation]
- 2a: Chapter 22
- 3: Scars (Novel), [Needs Citation]
- 4: The Horus Heresy Book Seven - Inferno, pg. 33
- 5: Warhammer Community - Artwork of Prospero
- 6: Ashes of Prospero (Novel) - Chapters 1-3
- 7: Mephiston: City of Light (Novel), Prologue
- 8: Psychic Awakening: Pariah, pg. 21 — Echoes of Awakening
- 9: Black Legion (Novel), Part One, Weapons