Willy Loman is the main character in Arthur Miller's play, "Death of a Salesman." He is a struggling salesman in his sixties who grapples with the pressures of achieving the American Dream. Willy is often lost in his memories and dreams of success, which leads to conflicts with his family and himself. Throughout the play, Willy's mental state deteriorates as he faces the harsh realities of his life. His relationships with his wife, Linda, and his sons, Biff and Happy, are strained by his unrealistic expectations and disappointments. Willy's journey highlights themes of identity, failure, and the pursuit of happiness.