Alonso Quixano is the main character in Miguel de Cervantes' novel, "Don Quixote." He is a middle-aged gentleman from La Mancha, Spain, who becomes obsessed with chivalric romances. This obsession leads him to adopt the persona of a knight-errant, renaming himself Don Quixote. In his quest for adventure, Alonso Quixano sets out to revive chivalry and protect the helpless. His journey is marked by humorous misadventures and encounters with various characters, reflecting themes of idealism versus reality. Ultimately, he embodies the struggle between dreams and the harshness of the real world.