Miles Halter is the main character in the novel "Looking for Alaska" by John Green. He is a high school student known for his fascination with people's last words and his desire to seek a deeper understanding of life. Miles is often shy and socially awkward, which makes it challenging for him to connect with others. Throughout the story, Miles embarks on a journey to a boarding school in search of adventure and meaning. He forms close friendships, particularly with a girl named Alaska Young, who significantly impacts his life. Miles's experiences at the school lead him to confront themes of love, loss, and self-discovery.