Dorian Havilliard is a fictional character from the Throne of Glass series written by Sarah J. Maas. He is the Crown Prince of Adarlan and is known for his charm, intelligence, and strong sense of duty. Dorian struggles with the expectations placed upon him as a royal while also seeking to forge his own identity. Throughout the series, Dorian's character evolves significantly as he faces various challenges, including political intrigue and personal loss. His relationships with other key characters, such as Celaena Sardothien and Chaol Westfall, play a crucial role in his development and the overarching narrative of the story.