Sevakrill

The Sevakrill were a race of aliens that had the ability take possession of humans and were able to eat human flesh. They were at war with the Charnal horde. On 23 October 1843, two Sevakrill possessed the designers of Nelson's Column. The two then aimed to construct a missile inside the Column as part of a strategic ploy during the war against the Charnel horde. They also used the Endovorms as guardians, disguising them with a Perception filter which gave them the appearance of stone lion statues. (ST: The Lions of Trafalgar)