MJgwarrocker66
Well, I think the name for that would be poltergeists. And they come from human energy. they are entities that feed off of human emotion. Emotions omitt energy feilds. But, most poltergeists result in emotional distress and traumatic events that the victim has witnessed.
no shadow creature i have ever seen has acted like a poltergeist. the ones at my house arent really human looking at all, more catlike, and just bounce around the room, almost like they are playing, but they seem a bit skiddish. im not sure if your showdow people are anything like the shadow creatures i have at my house so you could be talking about something very different from what ive got