Charlie Thompson is a fictional character from the novel "The Perks of Being a Wallflower" by Stephen Chbosky. He is a high school student who navigates the challenges of adolescence, including friendship, love, and mental health. Charlie is known for his introspective nature and his ability to express deep emotions through writing. Throughout the story, Charlie forms close relationships with his friends, including Patrick and Sam, who help him come out of his shell. His experiences highlight the importance of connection and understanding during the formative years of youth, making him a relatable character for many readers.