James Tyrone Jr. is a character from the play "Long Day's Journey into Night," written by Eugene O'Neill. He is the eldest son of the Tyrone family, struggling with his identity and the impact of his family's troubled dynamics. Throughout the play, James battles with addiction and feelings of inadequacy, often reflecting the themes of despair and longing for acceptance. His relationships with his parents, James Tyrone Sr. and Mary Tyrone, as well as his brother Edmund, highlight the complexities of familial love and conflict.