Alright, so I'm wondering something. I have started writing a book and I really really like this one character I made. she's a very secretive very cryptic character who is tied to everyone's fates and is only ever seen once but sets up the dominos for them all to fall. Is there anything I should keep in mind if I want her to be the common character between a series of books? Even if the books themselves are not connected in a sense. It's sort of like the series another- (Pan, faust, jackyll, hyde,) They all had the countess or the duchess in them somewhere and all had the same school where crazy fairytail nonsense was going on.