Hrud

The Hrud (Troglydium hruddi), also known as the Nocturnal Warriors of Hrud, are an intelligent alien race of the Milky Way Galaxy who are prone to living in subterranean conditions and who possess an unknown biological ability, likely Warp-based, to dramatically accelerate the aging of any living being or to accelerate the slide towards entropy of an object that comes within their vicinity. They are considered a dangerous xenos species that threatens human life by the Imperium of Man. There is currently a dispute between Imperial scholars over the nature of the species, as two very different types of alien being have both been labelled as members of the Hrud species.