Saori Kido, the mortal incarnation of Athena, Greek goddess of war, wisdom, and justice, is charged with safeguarding Earth against celestial threats. Born as an infant beneath her statue in Sanctuary, she narrowly escaped assassination thanks to Sagittarius Aiolos, who delivered her to Japanese billionaire Mitsumasa Kido. Raised as his granddaughter, she grew aware of her divine identity early in the manga but uncovered it gradually in the anime, evolving from a privileged, arrogant heiress into a compassionate leader devoted to her celestial duties. During her youth, she managed the Graude Foundation and orchestrated the Galaxian Wars tournament to recruit loyal Saints. This initiative forged her bond with the Bronze Saints, notably Pegasus Seiya, whose initial skepticism shifted to unwavering allegiance after observing her selflessness. Throughout conflicts against Sanctuary’s corrupt Pope Saga, Poseidon, and Hades, her divine blood and tactical significance made her a recurring target. In the Hades arc, she ventured into the Underworld, harnessing her Eighth Sense to defy its restrictions and challenge Hades head-on. Her powers encompass healing energies, protective barriers, teleportation, and the Seal of Athena—a tool to imprison rival gods. Her arc centers on sacrifice and resilience, enduring physical trials like the cursed arrow in the Twelve Temples arc and emotional struggles with isolation and duty. Spin-offs such as *Saint Seiya: Next Dimension* and *Omega* depict her time-traveling to reshape destiny and guiding new Saints, reflecting her maturation into a strategic mentor. Her dynamic with Seiya intertwines mutual respect and subtle, unvoiced affection, tempered by the divide between her divinity and mortal ties. In *The Hades Chapter - Inferno*, she spearheaded the Saints’ invasion of the Underworld, ready to die to halt the Holy War. Strategically leveraging divine relics like Nike’s golden staff and the Aegis shield, she activated her Cloth with her own blood, embodying hope through her willingness to suffer eternally for humanity’s survival. Across adaptations, Saori Kido/Athena anchors the saga’s core themes: redemption, duty, and the interplay of godly might and mortal fragility. Her journey intertwines ancient mythos with personal evolution, positioning her as both a guardian and a catalyst in a world besieged by divine strife.