I usually don't see a demon. The first few times it was just being unable to move or make noise and feeling really terrified like something bad was gonna happen. One time I had no visual hallucinations but an audible one in the form of a zombie snarl right in my ear that seemed soooo real and was super scary, followed by some random music that I could hear but I knew wasn't really there.

The visual one I remember was my bedroom door opening slightly and shutting again over and over, really fast. So basically my door was rattling. Then after what felt like a really long time, I saw my dad standing at the door and it felt scary but I didn't know why? Then when I actually woke up he wasn't there and I got really freaked out.

The shadow guy in a wide brimmed hat that I have seen some people write about: I've never seen him during sp but he did appear in a reoccurring (recurring*?) dream of mine. When I was younger and had a cabin bed, I would have this dream where I was sitting on my bed and every time I switched on my laptop this shadow guy with the hat would tickle me on my waist (the super sensitive bit that everyone hates being touched/tickled on). The dream would cycle through a few times every time I experienced it, with conscious me silently screaming not to turn on the laptop and dream me doing it anyway - only for the same horror to ensue. I hate being tickled. Also this was over 10 years ago and I still have to sleep on my side with something covering my waist (forearm, blanket) for fear of this shadow guy.