Fairy

A Fairy in its Human-sized form

Fairies, as Humans call them, are a dangerous humanoid species native to Earth. Fairies are not alien life-forms, but have lived alongside Humanity since they first developed. Their exact nature is unclear, although Jack describes them as part myth, part spirit world and part reality jumbled together, mixed with "old moments and emotions", moving backwards and forwards through time and seen only out of the corner of one's eye.

Jack speculates that fairies may be "part Mara", though it is unknown if he is referring to the Mara of Snakedance and Kinda or the creature from Scandinavian folklore.

Fairies are seen in two forms: one a small, glowing humanoid form and the other a Human-sized, more monstrous form. Both forms have wings and can fly with ease. They have precise control of weather, being able to create both sudden rainstorms and gales. It is also implied they could freeze the world over. They can also kill people by filling their throats with rose petals.

Fairies don't seem to reproduce normally and instead kidnap children and turn them into fairies. They pick out children to be their Chosen One and will protect them at all costs, killing anyone who attempts to harm them. These Chosen Ones always seem 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. (TW: Small Worlds)

The Fairies may be related to the Immortals, ancient, advanced Humans with a variety of 'mystical" powers.