Thad Beaumont is a fictional character created by author Stephen King in the novel "The Dark Half." He is a writer who struggles with his alter ego, George Stark, a violent and dark persona that he created to publish his more gruesome works. Thad's life takes a dramatic turn when he decides to bury this alter ego, only to find that it comes back to haunt him. In the story, Thad grapples with the consequences of his decision, leading to a series of supernatural events. The conflict between Thad and George Stark explores themes of identity, creativity, and the darker sides of human nature.