well I can't really be much help for you on how to deal with the thoughts because I still have probs with mine, but I can tell you that you are not alone having obsessive and intrusive thoughts from fictional characters because that's kinda what I have, however the characters that bother me are the ones from scary movies or the gory parts of the movies replay in my head. I do not allow myself to watch such movies or tv shows that have violence because I can't handle them.