Holden Caulfield is the troubled teenage protagonist of J.D. Salinger's novel 'The Catcher in the Rye.' The story is a first-person narrative that takes place over a few days in Holden's life. Holden is known for his cynical outlook, rebellious nature, and his struggle with the phoniness of the adult world. Through Holden's character, Salinger explores themes of alienation, identity, and the loss of innocence. Holden Caulfield has become an iconic figure of teenage angst and rebellion.