This happened in my old house, back in Jakarta, Indonesia. I was the only child until I was 10, until the arrival of my little sister. Mum decided that I was old enough to make good use of my own room, because I would sleep with my Mum every night. My room was on the second floor while my parents' room was on the first floor.
It was a nice soft pink room, very cozy and pretty. But as a child, I simply hated it when Mum forced me to go up to the second floor and sleep in my own room all by myself. I would leave the lights on and the door wide open, but at times. My Mum would come to my room to check if I was sleeping and then she would turn the lights off and sometimes leave the door open because I begged her not to shut the door because if I were to scream at night, she wouldn't be able to hear me and if something scary were to happen, then it would be easier for me to run out of the room, yes, I was quite a paranoid as a 10 year old.
This one night, I was sleeping in my own room alone. For some reason, I woke up in the middle of the night. I looked at the clock on my study desk and it was only two o'clock in the morning. I blinked and then I saw a tall big man stood beside my bed, he was green from head to toe. He looked like a normal human being, fairly young and nothing like the Hulk or the Grinch. He was looking down at me, I looked at him for a few seconds and then I looked at my room.
Around my bed, there were people sitting down on the floor of my bedroom, I couldn't see their faces clearly, they were almost like black and gray shadows. There were so many of them, they practically filled up the whole bedroom. I don't think any of them were looking at me, they were looking down at the floor and they were mumbling something, in a language that I could not understand. The way they talked, it was almost like they were mourning and wailing at me, because they were surrounding my bed. But I could hear from their voices, they were sad.
Funnily, I was not scared of them, although they were my first ghosts. The green man who stood beside my bed, he didn't look like he was going to eat me or anything and the shadow people who were sitting around my bed; I knew they wouldn't attack me. Next thing I know, I fell asleep. The moment I woke up, I realized that I saw something in my room, it wasn't a dream.
I have never seen that green man or the shadow people since then. But I've realized that since that one encounter with the supernatural world, I became more sensitive to those things. It is almost creepy, maybe they gave me the ability to feel, hear and sometimes see them from that one visit? I don't know, but I won't mind if they were to come and visit me again.