Werewolf

A werewolf is a human who, during a night of a full-moon, transforms into a wolf-like being. The transformation is very painful and during that night every month, the wolf will attack whoever is near him or her, not recognizing people as friends or foes. This has caused people to avoid and discriminate werewolves which, in turn, has caused most of them to turn to the Dark Side.

The condition is brought on by a bite from the werewolf during the night of the full-moon. When bitten at any other time, some traits might be inherited, like the desire for raw meat. Werewolves sometimes not only bite but kill their victims; those cannot live on as werewolves but are, really, dead. This was what happened to Mandy Diamond's parents, who were attacked and killed by the notorious werewolf Fenrir Greyback. Upon finding out about this, Mandy feared that Greyback would come after her as well and her boggart became a werewolf. She also showed that she did not trust in any other werewolves and did not like the close relationship that existed between Freedom and Remus Lupin.

Remus Lupin was one of the few werewolves who did not turn to the Dark Side, most probably because of that he had friends that supported him and helped him get through his condition, among them James Potter, Sirius Black and Albus Dumbledore. Freedom eventually cured his condition by using the Golden Flame to protect other members of the Alliance. This initially formed a mental bond between them as well, but not as strong as the one existing between Sandra Roberts and Carlisle Cullen.

Other than the Golden Flame, no cures of this condition have been found. It is possible for the werewolf to drink the Wolfsbane Potion before the transformation begins, however; it does not cure the condition but makes it possible for the victim to retain a human mind while in his or her werewolf-form, thus being able keep away from attacking people.

The condition can only be obtained by humans.