This happened 2 or 3 times.
I was "dreaming" that I was in my living room, showing somebody how I can leave my body. I would go in and out a couple times all the way up to the ceiling. On the last time, I looked down at my body, and there were black shadowy "Things" surrounding it, looking up at me, taunting me. I dont think they were actually speaking, but it was something like "Haha, you cant get back to your body!" They were preventing me from going back. Eventually I got scared and started praying, and the things went away.
Yeah. They are mostly mean entities. They are also mostly harmless. Just don't mind them much.