Osiris was king of the gods. His wife Isis was goddess of fertility and magic and their son Horus was the falcon-headed god of the sky. Osiris was sacrificed by his brother Set in a bid to usurp him. Set cut him into pieces and scattered them across Egypt. Isis and Horus found the pieces and restored Osiris to life. Horus remained to rule the Land of the Living and Osiris went to the Underworld to rule the Land of the Dead. The Pharaoh was an incarnation of Horus.
In his original form, a green-skinned man dressed in the raiment of a pharaoh. Following the Legend of Osiris, he appears as a green-skinned man in the form of a mummified pharaoh. He is often depicted wearing the atef crown with a pair of ram horns at its base.