A giant of molten rock and magma-like blood. He is the second eldest of the Seven Princes of Hell, his raw might surpassed only by Lucifer, the eldest brother of the Seven whom Satan and four of the other Princes had sealed away centuries ago.
Satan is defined by his love of beasts. His followers venerate nature in all its raw forms. Those humans who wish to gain his favor must do so by proving their oneness with the land and their skill at the hunt. The practice of restorative nature rituals and the slaying of mighty prey are both good ways to draw his attention. Those humans he favors enough will be granted the gift of lycanthropy, signifying their acceptance into his court. This is the only relatively safe way to become a werewolf, as the alternative is to be lucky enough to survive an attack from one.
Satan is also notorious for his hatred of the human species as a whole. With few exceptions he sees humanity as a blight on nature that does nothing but waste, persecute, and destroy. He does not hate individual humans, however. His court is a meritocracy, where individual skill, knowledge, and value are held above all else. Regardless of your origins, if you demonstrate that you get his philosophy he will accept you without hesitation.
A major contributor to his low opinion of humanity is an incident in which he had accidentally frightened an old man in the desert when he was slightly off aim with a teleportation spell, causing him to appear near the man. From that point forward he has been written into human mythologies as various devil figures, his name forever tarnished. His rituals were distorted into twisted parodies of themselves and his sporting hunts were reinterpreted as animal or human sacrifices, to his outrage and disgust.
He took particular offense when the god Pan was said to be him; Satan sees Pan as a self-indulgent asshole and the two had never gotten along.