Hagen Merak is a character from the anime series Saint Seiya, specifically appearing in the Asgard arc. He is one of the God Warriors serving Hilda of Polaris and represents the constellation of Merak. Hagen is characterized by his fiery personality and strong sense of loyalty to Hilda, whom he deeply respects and admires. His armor, the Merak Beta Robe, grants him control over fire and lava, making him a formidable opponent. Throughout the series, Hagen's inner conflict and devotion to his cause are explored, adding depth to his character.