Corpus Brethren

The Corpus Brethren is a warband of Chaos Space Marines dedicated to the Pleasure God Slaanesh. They were once a Loyalist Chapter of Space Marines of unknown origin and Founding known as the Sentinels. They were corrupted after entering the Eye of Terror in 321.M37 as part of the Imperial Abyssal Crusade. During their sojourn in the Eye, the Sentinels found signs of Chaos Space Marine infestation and made planetfall on the Daemon World of Oliensis, which was shaped like a morbidly-obese man. The Sentinels hunted down and exterminated the goat-headed hedonists that frolicked there, but the cacophony of battle stirred Slaaneshi Noise Marines, who came pouring out from the planet’s fleshy pores and soon battle was joined.