Since I was about four years old I have always had strange things happening to me. I wasn't the average baby either, I never wanted to be held or comforted. I always played by myself as kid. And I also had night terrors. That's where everything started. I don't remember them very well because I was so little but my mom told me that I would be screaming in my room as if I was being murdered. And when she came running in, I'd be screaming weird things like "let me out before he gets me" or "he's watching Me" and I'd point to places in my room. Or sometimes id be banging at the door. And It was always a man, and I was afraid. My mom actually thought someone had been hurting me, but no one was. This never happened when someone else slept in the room with me. Suddenly, they stopped. Until one night when I stayed at a hotel with my family and friends. I slept on the ground and all I can remember is my mom waking me up by the door late at night. Apparently I had been banging and clawing at the door screaming "let me out before he gets me" and stuff like that. My mom told me after this happened about all of my night terrors as a child. I haven't had another one since then and its been about 4-7 years, I can't remember.
Another thing that happened was I was reading a picture book when I was little and was sitting up tucked in bed with my legs straight in front of me. I had one of those spring mattresses where you can push up underneath the bed and the mattress will go up off the springs. Well, all of a sudden it was like someone pushed up on the mattress underneath and my legs went up. And then it went back down. I screamed for my dad and told him. But when he looked under the bed, nothing was there. No one else was in my room.
My family likes to move every couple of years, and around age 12 I had just moved into this really nice house in a sub urban neighborhood. That's when things started happening again. I would wake up at almost exactly 2:30am every night for no reason. And I wouldn't even remember waking up, I would just suddenly be sitting up in bed. And Id have this weird feeling every time. Then one night I woke up and I could barely see around my room but my dog was sitting up with me for some reason. And I had this really odd, creepy feeling in my stomach that something was wrong. And I get this feeling a lot, even to this day. Well I was looking around my room and suddenly something caught my eye behind me. It was the shadow of a man on the wall where my bed frame touched. No, I did not have barbies so it definitely wasn't it. But unlike all the other stories I've read where the person only saw this for a split second, this shadow just stayed there... Staring at me. I could feel it's eyes watching me, but it had none. It was just a shadow, and I couldn't see its legs. It was like they faded away into my bed frame. And it was terrifying. I did not feel safe and actually I stared back at it for what seemed like forever. I froze. And then I scrambled for the light and slept on the couch for about a week.
Strange things like this happened all the time around the house. Long after I saw this shadow, I heard my name in a raspy voice before going to bed. In the same house where I saw the shadow. Lots of things like this happened, where'd id hear mirrors breaking but when I checked, nothing had happened. And since that time, I've had things like this happen to me all the time. Over time I learned to ignore it. But everytime people get close to me they start to see things, like a man in the room or shadow people, or things that I have seen before. And I talk to myself, all the time. But not like a normal person, I talk as if I'm having a conversation with someone else in the room. And its kind of weird. I thought it was normal until someone asked me about it. I don't know what this is, but I'd like some advice?
What you describe sounds like a combination of a couple entities. But the shadow person sounds like a "Watcher".
I actually just finished composing an entry about them.
Feel free to read about Watchers on my Discord,
Https://discord.gg/awwasQW
The short version is that watchers do exactly that, watch. They want to know how you'll respond to them. Evil entities are attracted by fear and will try to scare you, but can actually be scared away by a burst of courage from yourself. Choosing to confront them and even yelling helps. Although it can be embarrassing if others hear it sometimes.
You also have a disembodied voice that the watcher has recruited. Those sometimes speak, or sometimes just mimic sounds such as the breaking mirrors you're hearing.
If you want more information, please join that Discord where other researchers like myself can help. And other people like yourself can share their experiences and get answers.