So, me and some friends have been planning to play our first CoC game for some time now, and I am going to be first-time GM. Most things are done, all the characters but one is finished, I got a pretty good grasp of the first scenario (Edge of Darkness). There is one thing that irks me, however. One of the characters has an NPC wife that is suffering from a somewhat strange, alien look and a debilitating illness(We rolled up the characters in a gaming aid called Heroes Now) so my first thought about her was "Deep One hybrid". It seemed a good idea, it tied nicely into the story, as I intend to introduce the order of dagon later, its suitably horrific, and the guy playing the character knows nothing about lovecraft, so he wont emmidiately realize what she is turning into (though when I described her looks, his first reaction was "cute goldfish" ). The problem is that I got another character with an inhuman lineage, a player character. She is a weird little girl who´s ancestors interbred with "fairies"(Degenerate descendants of the people who inhabited britain before the anglo-saxons) and I imagined that in future adventures she would have to go on a horrible journey of self-discovery and then try to deal with the implications (assuming she is still sane or alive enough), but Im worried that having two characters with the same theme might dilute the potency of the horror, kind of like having your characters go into a haunted house in every adventure. So I am wondering: what do you think I should do? Remaking the PC is not really an option, but maybe changing the wife into something different? Or maybe I should have both of them in the game, as long as I make their situations different enough? What do you think?