What is "tharmas"

In the mythological writings of William Blake, Tharmas is one of the four Zoas, who were created when Albion, the primordial man, was divided fourfold. He represents sensation, and his female counterpart is Enion, who represents sexual urges. He is connected to the God the Father aspect of the Christian Trinity and is the begetter of Los. Tharmas is mostly peaceful, and flees during most of his fights with Urizen. He is depicted in various ways ranging from a youth with wings to an old bearded man.