Destroyer Hive - History: During the early years of the Great Crusade in the late 30th Millennium, Calas Typhon hailed from the Death Guard Legion's toxic homeworld of Barbarus. Typhon possessed the blood of the mutant psyker warlords that had ruled the planet before being defeated by Mortarion, the Death Guard's primarch, who had been exiled to Barbarus through the Warp from Terra by the Dark Gods.When the Emperor reclaimed His lost son Mortarion from the poisonous mists of Barbarus, and reunited him with the superhuman warriors born from his gene-seed, Typhon was amongst those chosen to join their ranks. Such was his strength of mind and body that Mortarion soon favoured Typhon above all others, elevating him to the rank of First Captain of the Death Guard Legion.It was whilst on crusade with the Word Bearers Legion that Typhon learned of a different path for the Legiones Astartes to follow, a future where his hard-won psychic abilities would be a source of greatness instead of a taboo to be hidden from sight. The foremost Chaplain of the Word Bearers, Erebus, inducted Typhon into the secrets of the Seven Pillared Lodge, one of the Warrior Lodges that had begun to spread throughout the Space Marine Legions in the later days of the Great Crusade. It was during this time that Typhon caught a glimpse of what the Space Marines could truly become if they shrugged off the yoke of the Emperor's ambitions.Perhaps Typhon's revelation was instrumental in Mortarion's own fall to the Ruinous Powers; perhaps Mortarion would have walked a dark path on his own. Either way, the troubled Death Guard primarch saw a worthy master in Horus, whereas in the Emperor he saw only a self-serving and pompous pretender who had stolen Mortarion's hard-won kingship in a single day.As the heresy that Horus initiated slowly but surely escalated into a galactic civil war, Mortarion ordered his fleet to head for Terra with all haste, intending for the Death Guard to join the other Traitor Legions in the destruction of the False Emperor. By this point, Typhon served one master alone, and it was not his primarch.Typhon had seen to it that the fleet's Navigators were killed to a man on the flimsy excuse that they had been in the secret service of Malcador the Sigillite, the Regent of Terra, but reassured Mortarion that the Warp-gift he possessed would see them through their journey in the Empyrean safe enough. Though he hated the concept of relying on witchery, Mortarion was left with little choice. The Death Guard fleet made transition into the Warp, and in the process damned themselves to an eternity of war as the puppets of a foul and ancient god.In leading the Death Guard into the Warp, Typhon had delivered them into the clutches of his new master, Nurgle, the Lord of Decay. The strange tides of the Empyrean are notoriously fickle, and during their voyage the entire fleet was becalmed within the shifting energy tides of the Immaterium by the will of Nurgle. As their warships lingered, directionless and without hope, the cloying influence of Grandfather Nurgle began to take hold.The Death Guard were subjected to the terrible infection of the Destroyer Plague and Nurgle's Rot, as Nurgle's power managed to infiltrate the vessels of the XIV Legion. It polluted the physical substance of the vessels themselves as easily as it did the warriors within. Before long, fat devil-flies buzzed through the thickening miasma inside each warship. Where they bit at the desperate warriors trapped within, flesh turned to suppurating jelly.The Daemon-venom of their stings caused flesh to blossom into hard new growths. Bellies distended and eyes ran like cracked eggs; even power armour melded and flowed into strange new shapes, often becoming one substance with its wearer. Here, the superhuman resilience of the Death Guard to disease and toxins proved their enemy, for they could not simply die, nor were they allowed to by the Lord of Flies. Instead, they were slowly, sickeningly transformed into Plague Marines, their souls claimed by Nurgle in exchange for a permanent release from the constant pain of the plague. Typhon, having orchestrated this grand corruption, was rewarded most of all.Swelling in size, his skin and armour became one. Great funnels of pestilential bone burst from his body. Into these poured thousands of Nurgle's Daemon-flies, gnawing him from the inside out until his rotten shell teemed and heaved with squirming life. Typhon became a great hollow colony of disease-carrying Daemonic insects. The bone funnels that sprouted from his back coughed black decay as Nurgle's servants regurgitated the psychic energies pulsing through what was left of his new mortal herald's body.Typhus, Host of the Destroyer Hive, Chaos Lord and Death Guard Sorcerer, had been born, most blessed and most cursed of all his repugnant Plague Marine kin. Since that bygone era, Typhus has visited a hundred thousand diseases upon the Imperium of Man. The Destroyer Plague is without doubt the most virulent of all, though fortunately its vector of Daemonic insects means that it is of limited use when infecting entire star systems.