The Devil (The Omen)

The Devil, also named Satan, is the overall main antagonist of The Omen film series. He is the father of Damien Thorn, the fallen angel Lucifer, and the ruler of Hell. His main goal throughout the series was to father the Antichrist, corrupt world governments, and bring about the end of humanity through the Apocalypse. The Devil only appears once in the series, giving the form of a large black dog. He is referenced many times by his son Damien in the third movie, and Damien points out the Devil in the depths of the river and says that he visited him first when he was six. The Devil's minions the HellHounds work on his behalf. The Devil is felt rather than seen, manipulating situations and killing everybody who knows Damien's identity in gruesome supernatural ways.

The Devil is revealed to have conceived two children, one who is Damien, and the other a girl, to further his lineage.