Characters are interesting pieces of your imagination. For many writers they are autonomous being made up of our experiences but different from us in fundamental ways. This at least is my experience, and by anecdotal evidence that of most of the writers I know. You hear it in interviews all the time – authors speak of their characters as though they are living, breathing people. Many of them talk about the characters telling the story and they are just there to write it down. It sounds crazy; in a way it sort of is.