Fairies are a supernatural race of beings encountered in Torchwood, a spin-off series based within the Doctor Who universe, unlike most monsters in Doctor Who, they are not aliens and are actually believed to be the creatures of legend. However unlike the relatively sweet-natured fairies that popular culture has depicted these Fairies seem to be much more like the spirits of folklore - vindictive, cruel and often ugly they sought out human children to become "Chosen Ones" and protected them without mercy until they reached the age at which they would be transformed into Fairies themselves.