Equuleus Kyouko is a supporting character from the anime and manga series 'Saint Seiya', specifically featured in the 'Saint Seiya: Saintia Shō' spin-off. She is the elder sister of the protagonist, Shō, and is known for her gentle, caring nature and strong sense of responsibility. As the Saintia of Equuleus, Kyouko serves as a guardian of Athena and plays a crucial role in protecting her sister and the world from evil forces, showing both courage and sacrifice throughout the story.