Come to think of it, ever since I was able, I've made my own costumes and all through childhood and adulthood I was never anything scary that I can remember. I love the scary atmosphere of Halloween, but prefer to be non-scary characters.
My favorites as a kid that I often repeated were--a Native American princess complete with my stuffed cat on my back as my papoose and a gypsy. Back in the 80's I went as Boy George and danced the night away with Michael Jackson, more recently a whole gamut of fairies, elves, medieval and renaissance princesses, and a more recent favorite Ceres The Ancient Roman Goddess of Agriculture (don't ask! The theme for the party was "food"!)