I'm very interested in your invisible girl plot. It sounds quirky and fun. I got some brain-juices flowing already on some character ideas for myself.
Let me know what you like.
Mr. Vampire- Vampires are kind of my guilty pleasure. I think they're a little overdone in recent times, but I still can't help loving them. If you dig 'em, I'd be willing to play one.
Amateur Warlock- Though I dig vampires, I think this idea has a lot more personality. His father having died when he was young, he never knew much about him. Until in his teenage years when he came across a locked pair of trunks in his attic. Going through them and reading the various journals, our protagonist figures out that his late-father had been a kind practitioner of magic. With some talent to it, but absolutely no education in it, our friend takes up his fathers practice. Meaning that he only knows what he's doing about 50% of the time. This could lead to some fun RP, I think.
With either one, I'd play a sort of quirky guy with his head in the clouds and toes in a puddle of paranoia. He's not 'crazy', but just a little funny.
Lemme know what you think, cause I rather like this idea.