My first encounter was when I was about nine. My mom and dad were going to an event of some sort, they never told us (my brother and I) what it was. But they did say they would be out late and that we were going to stay at my grandparents' place.
After they dropped us off, we played with some toys, went swimming, and roasted s'mores over their fireplace. But it wasn't until it was time for us to go to bed that something out of the ordinary happened.
I woke up at around 3:00 am. This happened often so I really didn't think much of it, but I decided to go get a glass of water since I was up. Now, in the guest room my brother and I were sleeping in, there's a small couch. My grandma always keeps it clean and I was positive we didn't set anything on there the night before. But as I was walking back to bed, I saw saw an extremely lean, grey colored shadow.
At first I tried to convince myself that it was only the light trickling my mind, but being nine and scared of the dark and ghosts, I ran to the bed and hid. But I knew that I couldn't stay under there for long. So when I mustered up enough courage, I peeked out. He was still there, but in a different position. This time I felt that if I looked away, he would lurch forward. Then all of a sudden he stood up, took two or three steps toward me and a second later disappeared. Although I didn't get a particularly evil feeling from him, it scared me to death.
Sorry if this was poorly written, it's my first time posting on here.
Thanks for reading:)