I have never seen the show either, but seeing as it is not canon, I am interested, if I can think up a good character concept. I was thinking about Tom Thumb, but he is a rather tiny character. If he could somehow live his life as a normal (though very short person) but have the ability to change back to his tiny original size, would he work? I know you want them to kind of fit into the modern world, right? He was supposed to have a shape-changing girdle (a gift from the Queen of the Fairies) and maybe that is how he can appear to be of a more average size.