Sauron (The Lord of the Rings)

Sauron is a powerful and malevolent all-seeing entity from J.R.R. Tolkien's "The Lord of the Rings." Originally a servant of the Valar, he turned to darkness and created the One Ring to control other magical rings and dominate Middle-earth. As the primary antagonist, Sauron seeks to impose his will through fear and oppression, symbolizing evil and tyranny. His presence is felt even when not physically present, representing an enduring, corrupting influence whose defeat is central to the story's heroism and hope.