Sauron

Sauron is the primary antagonist of J.R.R. Tolkien's 'The Lord of the Rings' and 'The Silmarillion.' Originally one of the Maiar, a divine spirit of the same order as Gandalf, Sauron became corrupted and pursued power above all else. Sauron's personality is characterized by his relentless ambition, manipulation, and absence of mercy, having no regard for life in his quest to dominate Middle-earth. He is deeply intelligent and a master of deceit and warfare. Sauron dislikes challenges to his authority and the mention of his former name, Mairon. He is also the creator of the One Ring, which amplifies his power and allows him to control the wills of others. Sauron's relationships with characters such as Gandalf and the Fellowship are adversarial, viewing them as obstacles to his goals. His special traits include his ability to shape-shift and his vast armies, including the infamous Nazgûl. The scale of his malice and the scope of his evil desires are unmatched, and he is a being with ancient knowledge that spans ages.