It's not really a monster, more like a feeling. I'm numb and can't move, but I can hear and sorta seem but everything is blurry and I see things moving around. It's horrifying. The most reason time it happend was when I had my headphones in and I could hear the video I was laying too but did not see it. I looked down and a hand came from the sheet on the side of my bed as I tried to turn my lamp on and I screamed but did not hear anything, then I heard my alarm and the hand went away and everything went normal. It's really scary.
Sorry if that was alot-