My story is very short, but it was something that scared me a lot given my age back in that time. I'm 19 now, but this happened when I was around 10 or 11 years of age.
This is one of the only ghosts that I saw that I actually got scared of. I used to see a lot of things when I was younger, so I was kind of used to it already. And the spirits that I could see very rarely would make me feel something about them, whether it is good or bad. I could see normal people doing what normal people did, they were never in white full of light or wearing a black cape with red eyes. And that's why this one stood out, he wasn't in a black cape with red eyes but he actually looked very evil.
Me and my sister used to share a room, and we slept in a bunk. I would sleep on the top of the bunk. It was about 11pm, I was half asleep already with my head turned to the wall. I changed my position and turned my head facing the rest of the room and then I saw him standing right in front of our bunk... I suddenly woke up, opening my eyes very widely. I leaned on my arm and froze with that panic scared face, staring at him. A man in his 40's, with a bit of a grey hair, he was oriental probably from Japan. He was looking straight into my eyes with a psychopath look. It was like he was watching and analyzing me, and we were both frozen like a picture looking at each other, me with a terrified face and wide opened eyes and him with a killer face. He stayed in that same position until he very slowly faded away. I think I stayed in that position and with that face staring at the same spot that I saw him until probably three or four minutes after he disappeared, only then I could look away and process what I just saw.
I had to call my mom and she stayed in our room until I fell asleep. My sister didn't wake up this whole time, so I only told her the next day, and she got more scared than I was. Thanks for reading.