Childe of Zillah. Set is a Typhonist and worshiper of Apep the Serpent. He is an Antediluvian who became the Typhon of an ancient cult, originally known as the Snake Clan. They are the Followers of Set who are trained in the Discipline of Serpentis. This cult's main enemy are the Children of Osiris, whom they've battled for millennia.
Set pretending to be Geb