Malevolent spirit/entity ('shadow people' are an example evil apparitions and killer spirits, etc malevolent entities are often very difficult to explain, and usually require exorcism to drive away or destroy most are attracted by some act of violence, evil, malevolence but that is no sure reason and others appear inexplicably poltergeists are actually a type of malevolent incorporeal entity but are near the least-harmful end of the spectrum other entities are absolutely deadly unlike ghosts - even the malicious ones - malevolent spirits are independent entities, not the souls or spirits of those who have died malevolent entities can be rovers, attached to an object or place, or animate an object or corpse many types exist) Ghost (the soul or spirit of a being, which remains for some reason or other in the Realm of Time and Consequence ghosts unlike phantoms are thinking entities and run the spectrum of helpful to malevolent some ghosts are rovers, others are attached to a spot, person or object, while some remain in their corpses and can animate them, particularly if disturbed many types exist)