Algol Perseus is a Silver Saint in the anime and manga series Saint Seiya. He is known as the Perseus Saint and is infamous for his deadly Medusa Shield, which can turn opponents to stone. Algol is a loyal servant of the goddess Athena, though he often clashes with the Bronze Saints. His ruthless fighting style and formidable abilities make him a memorable antagonist in the series, particularly during his confrontation with the Bronze Saints at the Sanctuary.