Gale (Greek, Ancient (to 1453);: Γαλῆ|Galê|weasel, marten in Greek, Modern (1453-); pronounced as /galɛ̌ː/) is a minor character in Greek mythology. She was a very skillful witch who earned the wrath of Hecate, the Greek goddess of magic.
According to Aelian's On the Characteristics of Animals, Gale was a talented witch who dealt in herbs and potions. But she was extremely lascivious, and had abnormal sexual desires (which are not described in detail). For this Hecate, the goddess of witchcraft, turned her into a small, "evil" (in the words of Aelian) animal bearing her name, gale (a land-marten or polecat).[1]
Thus the animal became one of the most commonly associated ones with Hecate. Martens/weasels were thought to have magical potency in ancient Greece, though not necessarily of the beneficial kind.
Gale's name shares an etymology with that of Galanthis, another mortal woman who was turned into a weasel at the hands of an angered goddess, in this case Hera.