Someone already wrote up a half-orc mime, and another person is just about done with the illustration to go with it.
The idea came from taking d20 fantasy archtypes and combining them with things a la Mardi Gras/ historic New Orleans.
So, for instance, something from column A: ogre, bugbear, gnoll, night hag, pixie, kobold
Then add it to something from column B: voodoo consultant, bartender, madame, witch doctor, restaurateur, dancer, musician
We're doing this particular exercise more for comic value than anything else, but it should work mechanically, whatever you do. Try not to make something too heavy-handed/powerful, but powerful enough to be an unexpected snag in a group of PC's day/week/month.
And thanks for wanting to get involved!