Sauron Gorthaur is the central antagonist in J.R.R. Tolkien's 'The Lord of the Rings' series. Once a powerful Maia spirit, Sauron became the Dark Lord who seeks to dominate Middle-earth through the power of the One Ring. He is a master manipulator and strategist, rarely appearing in physical form but exerting immense influence over his armies and servants. Sauron's desire for power drives the main conflict of the story, as the protagonists strive to destroy his ring and thwart his ambitions.