Fairies are on of the most misunderstood, and misrepresented creatures of all. And though not my favorite mythical creature (that would be the Dragon) it was one of the most fun to write about! Despite popular belief, Fairies are NOT the sparkly, friendly creatures they are made out to be.
Fairies are Dark, Mean, Evil creatures who love to play tricks on anyone who get's to close. Confused? Don't be. Appearing as beautiful friendly creatures is one of their many evil tricks. Have you ever thought about why Cinderella, Snow White, Sleeping Beauty, Hansel and Gretel. . and the countless other stories are referred to as Fairy Tales? Because the original stories, were Dark, Mean, Evil, Gruesome stories.
Now they have been re-written so many times that rarely do people know the true stories, as well as the true nature of Fairies. Hence the fact that now most people believe fairies to be wonderful, beautiful, kind creatures.
Fairies in general are actually supposed to be very beautiful on the outside. It is part of their charm. They make people believe they are beautiful so they can trap them with their ugly hearts.
Fairies are also associated with Brownies which is very funny considering a brownie is nothing like a Fairy at all. Brownies are actually house elfs. Yep, house elf, as in Dobby the house elf from Harry Potter. See? Nothing at all alike.