War Hounds - The Primarch of Wrath: A very great deal about the finding of the Primarch Angron remains unknown to wider Imperial record. There is in fact evidence that this information, including the true name of the world he was found upon was known but was kept deliberately secret by command of the Emperor and those close to Him. That which is known is a dark tale of the primarch's brutal upbringing, murderous violence, and Angron's revolt against his cruel masters. How Angron came to be separated from the Emperor and Terra by the mysterious machinations of the Ruinous Powers and what planet they deposited him upon after he was stolen away as an infant through the Warp is unknown. Where this planet is located in the galaxy or if it even still exists is uncertain. Carpinus' Speculum Historiate tells of Angron's homeworld that it was technologically advanced and ruled over by a wealthy noble caste who lived in decadent opulence while the populations of their cities lived in abject poverty in the huge slums surrounding their palaces and villas. To distract the populace from their poverty, the oligarchic rulers of this planet held regular gladiatorial deathmatches in massive arenas, using cybernetically-enhanced gladiators who battled to satisfy the endless bloodlust of the oppressed people. It was on this world that the Primarch Angron was eventually discovered, though little else about the circumstances of how he came to be there remains known.What is known is that Angron was discovered by a slaver who chanced upon the battered and bleeding figure of the young primarch, surrounded by scores of alien corpses, high in the northern mountains of the world. History does not record what species these aliens belonged to, but many Imperial scholars believe them to have been Eldar who attempted to kill the primarch, due to some psychic foreknowledge of the plague upon the galaxy he would one day become. Angron had been badly wounded in the combat, but remained alive. Taken as a slave, Angron was nursed back to health and bio-neural cybernetic implants were surgically grafted to his cerebral cortex. Relic devices from the Dark Age of Technology, these implants would boost a warrior's adrenaline, resulting in greater strength and aggression in battle. Angron was taken to the planet's capital city where his obvious potential as a gladiator was soon made apparent and he was bought by the largest and most popular arena in the capital. The cells below the arena were home to several thousand of these cyborg gladiators and Angron took his place amongst them.After only a few months, Angron had become a proud warrior of fearsome skill and an even stronger sense of honour. He killed hundreds of other gladiators, but those who fought well he always spared. Although Angron seemed to enjoy the life of a gladiator and the adulation of the crowds, he secretly resented his slavery, and was always plotting to escape. He proved to be a troublesome champion, prone to attempt escaping whenever he saw an occasion, but such efforts always failed. Within a few standard years Angron's fame had spread to every corner of his homeworld. Under his training, the gladiators of his arena soon became the greatest their world had ever seen and none could stand against them. Yet Angron also learned, following a final failed escape attempt, that he would never succeed alone. His unbending warrior's code and sheer combat skill had made him a well-respected leader among the other gladiators and when the largest death games ever held on his world were announced, Angron planned his most daring escape attempt. For these new games, Angron was allowed to stage a vast combat that would involve every gladiator of his arena. As the crowd drowned out the sounds of battle, Angron's gladiators turned on their armed guards, butchering them and fighting their way to freedom. Against the guards armed with firearms, the gladiators' casualties were grievous, but nearly 2,000 survived to escape into the capital city, stealing what weapons and supplies they could before fleeing into the northern mountains where Angron had first been discovered. Over the next few years, the rulers of the world dispatched many armed forces to kill or recapture the rebel slaves, but all were destroyed in turn by Angron's leadership, martial skill and the cybernetically-enhanced fury of the gladiators.But attrition and hunger slowly took their toll on the slaves and eventually only 1,000 men and women remained, half the size of the original force of escapees. On a mountain named Fedan Mhor, Angron and his forces were finally surrounded by no less than five large armies. Not even the primarch could stand against such sheer numbers, yet it was at this time that the Emperor of Mankind came to this world, drawn by the psychic emanations of His gene-son the primarch. The Emperor had observed Angron secretly from orbit for many months and had watched with pride as he had led his freed slaves in battle against the forces of tyranny. The Emperor descended to the world's surface and after the shock of the august meeting had worn off on the primarch, the Emperor offered Angron the leadership of the XIIth Space Marines Legion, which had been created from Angron's own genetic material, and a place at His side in the Great Crusade. To the Emperor's disbelief, Angron refused, claiming that his place remained with his fellow slaves and he would die before deserting them. The Emperor retreated to His flagship, shocked at His son's refusal. Appraising the situation, the Emperor saw that for all of Angron's might as a primarch and a leader, he would die in the coming battle. Losing one of His irreplaceable sons to the assault of rabble on a backwater planet soon to be brought into Imperial Compliance was simply unacceptable. Bringing His flagship into low orbit over the world, the Emperor teleported Angron away from the mountain of Fedan Mhor. Without their leader, the morale of the gladiators was destroyed and the next day they were slaughtered to the last man by the armies of the world's rulers. This was a deed for which Angron would never forgive the Emperor, and a stain upon the primarch's honour that would never fade but fester into a soul-deep wound.The exact records of the Emperor's intervention and Angron's acceptance of his new situation is a matter of shadowed rumour and conjecture, but what can be said with certainty is that Angron's first reaction to his new situation was rage. It was said with certainty that for some time any War Hound who came before him was met with a grisly death for their efforts. It is certain that at this time the Legion Master of the War Hounds, Ibram Ghreer, a respected general who had commanded the XIIth Legion for nearly three decades, disappeared without explanation from any record of the time and no explanation was given by his taciturn Legion for his absence. Apparently some sort of accommodation was reached and Angron swiftly took charge of his Legion. Angron renamed his Legion the World Eaters after he assumed command. Angron did this in honour of the gladiator force he had led in rebellion on his homeworld whose warriors came to be known as the "Eaters of Cities" for their wrath and violence. He chose the new name for his Legion when Dreagher, a Terran-born War Hounds Astartes who served as captain of the Legion's 9th Company, promised Angron after meeting his primarch for the first time that under his leadership the War Hounds would become "...the eaters of worlds."