The son is the central figure for sure. There could be a mentor figure in the story, someone who guides the son or has an impact on his life decisions. And perhaps there are friends of the son who play important roles in either supporting or challenging him.
Not sure exactly what you mean by that. Maybe it's about a scene where a toy realizes they are loved and it has a significant impact on the story. But without further clarification, it's hard to say for sure.
Well, it's possible. Fan fiction authors have certain rights over their creations. If you copy their work, it depends on various factors like if they have explicitly stated it's not to be copied, or if they hold some form of copyright (even if it's a bit more complex in the fan - fic world). In many cases, if you use their work without permission, they could take legal action against you.
There are various stories that can be associated with 'all fear'. One common type is the fear of the dark. In many children's stories, the dark is depicted as a place full of danger and mystery. This could be because our vision is limited in the dark, and we can't easily detect potential threats. Another aspect could be the fear of losing loved ones, which is a common theme in many sad or tragic stories. These stories often show how people react when faced with the possibility or reality of separation from those they care about.
It's very possible. Fan fiction is protected by copyright laws to some extent. If the original author believes their rights have been violated by your copying, they have the right to take legal steps against you.
The story of 'Dracula' is also very famous in relation to fear. The vampire Dracula represents the fear of the unknown, the fear of the supernatural, and the fear of death. People in the story are afraid of being bitten by Dracula and becoming like him, which is a form of fear of losing one's humanity. The dark and mysterious settings in the story, like the old castle, add to the overall sense of fear and unease.