My wife encountered a non-humanoid one in dorms at a college before we ever knew each other and was with about 5 other people that saw it. Later in life she woke to paralysis like you described to see one walk into her son's (my step-son... my oldest son) room that was humanoid and there were two more standing around her middle daughter's crib (youngest not born yet). She said she had the feeling that her grandmother showed up and scared them off. She still does not know what was going on. That time she did say there was a guy dating one of her sisters living into the property that was a Satanist and into Black Magic and such, but they didn't find that out until later after he was already out of the picture. So that means he was dabbling with energies. Whether it is all related or not... it's all speculation, but I've met a lot of people that have seen these things.

The one I encountered was massive and not in humanoid shape.