J.D. Dorian is a fictional character from the television series Scrubs, which aired from 2001 to 2010. He is portrayed by actor Zach Braff and serves as the show's main protagonist. J.D. is a medical intern who navigates the challenges of working in a hospital while dealing with personal relationships and his own insecurities. Throughout the series, J.D. often uses imaginative daydreams and humorous narration to express his thoughts and feelings. His character is known for his close friendships with fellow doctors, including Turk and Elliot, and his unique perspective on life and medicine, which adds depth to the show's comedic and dramatic elements.