No one creates characters out of thin air. They are bits and pieces of people you know, have seen, or read about. Sometimes the main character has a lot in common with the author. I’ve never read a Stephen King novel, but I know that his main character is often a novelist.
While writing THE PRINCE IN THE TOWER, I identified with several characters, especially “Effie Belle Butler,” an airbrushed image of me, with all of my strengths and none of my weaknesses. Writing a novel is like daydreaming about who you would like to be and who you would like to be with.