Willie Stark is a fictional character from the novel "All the King's Men," written by Robert Penn Warren. He is portrayed as a charismatic and ambitious politician who rises from humble beginnings to become the governor of Louisiana. Stark's journey reflects themes of power, corruption, and the complexities of human nature. Throughout the story, Stark's idealism is challenged by the realities of political life. He initially seeks to improve the lives of the common people but becomes increasingly entangled in unethical practices. His character serves as a commentary on the moral dilemmas faced by those in positions of authority.