Fairies are not always adorable, apple-cheeked, butterfly-winged pixies alighting on people's outstretched fingers. They're not even mischievous little game-players like Puck. Some of them are outright freaky. Check out the scariest fairies no one wants to meet below.

One of the world's tiniest frogs has been discovered in Borneo. At 10-12 mm long, Microhyla nepenthicola may be micro, but its croak is loud. That's how researchers found them, swimming in tiny puddles of water captured by pitcher plants.