Fairy

Fairies were dangerous and mysterious humanoid entities native to Earth, if not the wider universe. Their exact nature is unclear, although Jack Harkness described them as part myth, part spirit world and part reality jumbled together, mixed with "old moments and emotions".

Powers and abilities
Fairies had a wide variety of advanced, seemingly magical abilities. They had control over the elements, and were able to control the weather to produce localized but deadly storms and gales. Not bound by normal physical laws, they can choose whether or not a camera can take their pictures. For example, they made themselves invisible to CCTV cameras on one occasion. On another, they enabled themselves to have their photographs taken. They can travel through time and have an apparent non-linear relationship to it. A common method of killing their victims was to "steal their breath", asphyxiating them by clogging their throats with rose petals.

Fairies were seen in at least two forms, one small and glowing humanoid with butterfly-like wings and at other times as Human-sized and more monstrous. Both forms had wings and can fly with ease. At least in the larger form, Jack Harkness described them as only visible from the corner of one's eyes. (TW: Small Worlds)

Origins
Jack said the Fairies came from the Dawn of Time. Humans, over time, made the fairies into something harmless and cute, however those who had encountered them (like Jack) never doubted their powers. He also described as "part Mara" (TW: Small Worlds).

Interactions with Humans
At least some Fairies were once Human children, taken from various time periods stretching millennia into the past.

Fairies didn't seem to reproduce normally, and instead take children and turn them into Fairies. These children were the Chosen Ones, who the Fairies protected and avenged if harm came to them, until the time that they claim the children and take it to their Lost Lands. These Chosen Ones always seemed slightly odd and will try to spend as much time as possible with the Fairies. They generally aren't involved with the affairs of other Humans, but they will violently defend any infringements on their territory and killed anyone who they feel has acted against them. (TW: Small Worlds)

External link

 * In-universe Torchwood file on the Fairies