Abhuman
Abhuman is a term used to distinguish a separation from normal human existence. This is different from inhuman, which typically connotes an ethical or moral separation from others.
The term was used by William Hope Hodgson in his novel The Night Land and his Carnacki stories. Similar concepts, although not the term itself, also appear in the works of Arthur Conan Doyle, Rudyard Kipling, and Bram Stoker among other notable modernist American and British authors.