Douko, also known as Libra Douko, is a key character in the anime series Saint Seiya. He is one of the 12 Gold Saints, representing the Libra constellation. Renowned for his wisdom and combat prowess, Douko serves as a mentor and guardian figure. He protects the Five Peaks of Rozan and guides his disciple, Shiryu, one of the Bronze Saints. Throughout the series, Douko is portrayed as a wise and strategic thinker, often providing crucial guidance and support in the battle against evil forces threatening the world.