An aguara, also known as vixen, vulpess, and fox demon, is an antherion: that is she's a non-humanoid creature that can take on the form of a member of a humanoid race. In an aguara's case, she has the base form of a fox.
Aguara are able to wield magic to a powerful extent. They can create powerful illusions, like being able to hide an entire river's channel, as well as bewitch other creatures, even for a short time, to do their bidding.
Even though they're not humanoid, they have adapted to speak the Common tongue and can communicate with people in this manner.
Aguaras don't reproduce sexually, but instead kidnap elven girls when they're young and then transform them into fellow aguaras using some kind of magic. Due to this, they also become very attached to their "children" and if an unfortunate soul happens to kidnap one, the aguara will give chase until she gets her "daughter" back and killing those who stand in her way.
- "aguara" means "fox" in Guaraní language. In the folklore of Guaraní people the aguara-tunpa (literally "Fox-God") is a trickster entity than use its power to cause sufferings and pain to human beings, altough it can be occasionally act benevolently. It is the counterpart of the French reynardine and the Japanese kitsune.