Lost Girl


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The Fae are supernatural creatures that live in secret among humans and prey upon them. The are divided into two clans, the Light Fae and Dark Fae. Whereas humanity consists of a single species (Homo sapiens), there are a myriad of species within the Fae universe. Most species seem to be similar in appearance to, and of approximately the same intelligence as, humans.

The mechanism of predation varies widely among the species, but typically doesn't involve oral consumption. It appears that most Fae species do eat "normal" food for sustenance, while the predation serves a different purpose. Frequency of predation also seems to be quite varied among species. Predation doesn't necessarily involve killing the prey – the human victim may simply be left temporarily or permanently weak, ill, mentally or physically damaged.

In recent centuries, the Fae have chosen to hide their existence from the humans, and the humans' stories of encounters with Fae have faded into legend, myth, and fairy tales. A vast majority of the Fae population are typically humanoid by appearance. Most Fae who can pass as human have infiltrated the human world and live as imitation humans. Even among their own kind, Fae tend to converse using the dominant human language(s) of their region. The Fae who are incapable of passing as humans, and thus must be kept hidden, are deemed Under Fae.

Since ancient times the Fae world has been gripped with near endless civil war and continued until Trick, as The Blood King and a Blood Sage, used his powers to end The Great War between the Light and Dark clans by forcing a truce between them and writing the Blood Laws that have since governed both clans. This peace has lasted for centuries; however, the Light and Dark collectives still view the other with contempt and suspicion. 

Fae Biology

The Fae in all their various breeds share the same taxonomic kingdom, phylum, class, and order as humans with only the difference being their genus which is simply labeled "Fae." All Fae share this same genus regardless of other distinctions. For example, a Succubus is a member of the succubi species.

All Fae appear to be extremely long-lived compared to humans; however, they are not immortal. They can be killed or commit suicide. Trick is, in fact, centuries old despite his appearance, as are Dyson, Ciara, Aife, The Norn and many others. This is because young Fae age and develop at nearly the same rate as humans until puberty, after which they become physically matured and thus no longer age as humans would. How they age is unclear and some Fae have been known to die of old age, but if and how their Fae abilities affect their aging is unknown. In Season 3, Vex lost his Mesmer powers when he reached a certain age. Some Fae live different lifespans than others: Valkyries, for example, die and are reborn once they reach a certain age (it is unknown for how many life cycles). In a flashback, Tamsin was shown to be in what appeared to be the age of Vikings. According to Trick, Fae do not allow divorce for the first thousand years of a marriage in order to "give it a chance" (Fae-nted Love).

Although different Fae species can apparently interbreed with each other, it is unclear how the powers of Fae children are inherited. While Bo is a succubus and her mother, Aife, is also, it is as-yet unknown if Isabeau (Aife's mother and Bo's grandmother) was a succubus, too. Evidence suggests that Bo's father was more powerful than an Incubus (i.e. a male succubi). Bo and Aife are part Blood Sage, inherited from Trick, and their blood can enthrall and bind Fae and humans to them.

Dyson, a Wolf-Shifter once claimed that his grandfather was a leprechaun (although he may have been merely joking given the context when he revealed the information). Hale and his sister Val are each different species: Hale is a Siren like his mother, while Val is a Pombero (although it has not been stated what type of species their father, Sturgis, is). It has also been revealed that hybrids of both Fae parents are possible, such as The Glaive possessing the power of telepathy from her father, a Telepath, and control of some aspects of nature from her mother, a Wood Nymph.

Fae do not appear to be as prolific as humans. For example, Sturgis is thousands of years old but has only two children, neither of whom have children of their own. A human a century old would likely have at least two generations of descendants. The Cabbit, on the other hand, had 38 children. The longevity and species of Fae may lead them to have less incentive to breed, whereas humans are encouraged to do so; however, this has not been explained.

Although Fae are forbidden from having a relationship with humans based on mutual love, the two beings can cross-breed, but the resulting children do not inherit Fae powers, and Fae are discouraged from having contact with their human children. These relationships are generally intended to be short-term. In Vexed, the Dark Fae rebel, Lou Ann, was punished for falling in love with a human, bearing children with him, and choosing him over her clan. However, in the case of Selkies, they can have long-term relationships with humans as long as they don't use their pelts, at which time they become mostly human.

Politics of the Fae

The leader of the Light Fae is called The Ash, while the leader of the Dark Fae is called The Morrígan. Once a young Fae chooses allegiance to one of the clans he remains a member of that clan forever. The Light and Dark are opposed to each other, but generally operate on a policy of a guarded truce, adhering to essential rules such as neither side crossing into the other side's territory without permission, and ensuring that knowledge of their existence is kept secret from humans.

Bo is the only known Fae to be "unaligned,"  after choosing allegiance to humanity instead of the Fae, which allows her to operate freely within either faction (although it also means that she lacks the protection of either one). Because Bo is known to be quite powerful, both the Light and the Dark have tried various times to sway her to their respective clans. As Bo is unaligned, her relationships fall outside of Fae rules.

Many of the Under Fae are non-sentient, thus making them similar to guard dogs if they serve either faction. Sentient Under Fae have not been referred to as being Light Fae or Dark Fae, but probably have to choose a clan as well – although more primitive Fae are generally considered exempt from some of the rules of Fae society.

Intimate and love relationships between Light and Dark are considered treasonous by both clans and are punishable by death. Only one day a year, on the holiday of La Shoshain, are Light Fae and Dark Fae allowed to socialize freely with each other. This peace day between the two Fae clans also prohibits them from using their powers on this holiday (the exception being unaligned Under Fae – and Bo, who is unaligned). A Banshee wailed on La Shoshain without being punished as the wail was instinct rather than an exercise of power. Fae also have certain territorial rules where neither side can cross without permission from the other; Dyson required explicit permission from a Dark Fae to enter his territory, a betting shop, and when two brothers chose separate clans they specifically requested that their mother's grave be relocated to neutral territory so that the Dark Fae son could visit it as well as his Light Fae father and brother.

Human/Fae Interaction

Humans are generally ignored by both clans except as pets, slaves, and food (Light Fae take what they need to sustain themselves, while Dark Fae are more likely to kill for pleasure as well). The Light Fae generally ignore any crimes that the Dark Fae might commit against humans. Despite this, Fae parents appear to send their children to human schools to ensure that they can learn to interact with humans, with there being no indication that Fae have a separate education system from humans.

In-love relationships between humans and Fae are forbidden, but casual relationships are condoned only in the short term – although selkies are a grey area. Fae/human offspring are considered human, with the Fae parent discouraged from making contact with his or her children. On at least two occasions, Fae infants have been adopted by humans without the humans knowing their true nature: Bo was left by Lou Ann in the care of a human couple who then adopted her, and her succubus nature actualized during her first sexual encounter when she was eighteen years-old; in Raging Fae, the boy, a Gama-Sennin, learned about his powers while trying to help his human father, with the boy and his father afterwards "taken in" by Lachlan, The Ash, to preserve Fae secrets.

Some prominent Fae own humans as their property. Lauren is a pledged servant of The Ash, along with various other humans under his control. Lachlan – who assumed leadership of the Light Fae after the former Ash that had lured Lauren into his servitude was critically injured in a suicidal bombing and left comatose – views human property as "chattel," and enforces rules that Fae should keep their human property locked away when the latter aren't working (although some Fae, such as the previous Ash, allow them to have more personal freedom). Humans who are claimed as property may interact within Fae society and are not to be harmed by other Fae. Trick announced to other Light Fae present in The Dal  that Kenzi was Bo's property to allow her such interaction and to have protection by Bo; however, although at least one Fae expressed an interest in purchasing Kenzi, Bo considers Kenzi an equal and treats her as such, with most of Bo's Fae contacts treating both Kenzi and Lauren as acceptable members of her circle.

It is unclear how the Fae decide what humans to own; while Lauren possessed skills that were desired by the first Ash, the second Ash (Lachlan) accepted Dyson's suggestion to take "custody" of a male human because the man had adopted a Fae child (although he at first briefly suggested splitting them up before Dyson confirmed their bond). There has been no reference made about the other human property of The Ash.

So far, the only Fae shown owning humans are the Light Fae, with human servants of the Dark Fae appearing to be simply employees unaware of the other-worldly nature of the Fae among them.


  • "Most of us feed on the humans in some way. Their blood, energy, emotion. It’s the nature of Fae." – Trick (Vexed)


  • The word Fae derives from "Fairy." A fairy is a type of mythical being or legendary creature in European folklore, a form of spirit, often described as metaphysical, supernatural or preternatural. Fairies resemble various beings of other mythologies, though even folklore that uses the term fairy offers many definitions.[1]


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