Probably hallucinations/Weird thing.

What I'm about to say will surely make me look like a crazy.

When I was a child, between 4 and 5 years old, I often saw a shadow at night. A shadow that was the same size as me and moaned while screaming.

This scream was a mix of broken radio, angry cat, zombie "aaaaah" with low tone of angry goat. It appeared when I pulled my head out of the blanket. Without pretext. His body was dark as night, his face was terrifying: two gaping holes for his eyes and a large, deeeeep and endless mouth. A spike on top of his head.

I was screaming every night until my dad picked me up to sleep in my parents' bed. The thing followed us and my father stopped me from turning on the light. He told me: "You are brave, you don't need to turn on the light". We stayed in the dark and I ended up falling asleep hearing the thing scream.

A few years passed, I was 16 and I finally saw him again. I told my father and he believed me, he told me he had seen it. I had my doubts, I thought he wanted to scare me so I asked him to go to another room in the house to draw this "creature". I'ved do same. We had the same drawing except for a few details... It scared me but my father didn't know any more than me.

I've heard of "Shadow people" before but it's not really similar, this thing have my size when I was 5.

He came to visit me when I was 21. Several times during my shock and anxiety attacks.

I found an image that looks like it a while ago but can't find any results on google.

Today, only a few years have passed and I still have questions. My father died 7 years ago, only I saw this thing.

You know what it is? Have you seen anything similar?