The Blood Wights are a loyalist Space Marine chapter, successors of Sanguinius and Blood Angels. Allegedly created in M33 as one of the chapters of the 5th Founding. Their first assignment was to assist the Inquisition in cleansing the Chaos from the Feral world of Tumulus and its surrounding planets in what was known as the Redemption of Tumulus. They were awarded the Feral World after the successful purging and took root on the planet, maybe more than was expected.