I have no idea who created the 'erotica doll story' as there is not enough information provided. It could be an individual writer, or it might be a story that emerged from a certain sub - culture.
I'm not sure specifically what the 'erotica doll story' is about as the term is rather general. It could potentially be a fictional story involving dolls in an erotic context, but without more details it's hard to say exactly.
The Annabelle doll in the story is definitely a demon. It has a reputation for being extremely malevolent. There have been numerous reports of it exhibiting abnormal and disturbing behavior. People who have come into contact with it in the story often experience a sense of dread and unease. It's not a good doll by any means; instead, it's a source of fear and horror in the narrative.
The Annabelle doll story is quite a spooky one. A doll, which could have been a good doll like any other, was infested by a demon. The demon's influence on the Annabelle doll led to a series of terrifying events. There are accounts of the doll changing positions by itself in locked rooms. It's not just a simple case of a doll becoming haunted. It represents a transformation from what could have been a normal, good doll into a conduit for a demon's malevolence. This has made the Annabelle doll a well - known and feared entity in horror stories.
Unnatural features can make a doll scary. Such as long, sharp fingernails on the doll's hands, or a strange mark on its body. The way the doll is dressed can also contribute. A tattered, old - fashioned dress that is stained can be quite disturbing. And if the doll has a smell, like a musty or rotting smell, it makes the story even more frightening. The interaction between the doll and the characters in the story, like the doll causing harm to them, either physically or mentally, is another factor that makes a doll scary in a doll scary story.
In the story, the Annabelle doll started as a normal, perhaps 'good doll'. But then a demon entered the picture. The demon made the Annabelle doll into a source of evil and horror, corrupting it from what it might have been originally.
It's hard to say for sure. While there are many claims of strange occurrences around the doll, there's no scientific proof of it being truly haunted. It could be a case of overactive imaginations or misinterpreted events.