Leo Aiolia guards the Fifth House as the Leo Temple’s Gold Saint within the Sanctuary. Younger brother of Sagittarius Aiolos, he bears the weight of his brother’s alleged treachery—accused of attempting to assassinate the infant Athena. This legacy fuels his relentless quest to prove allegiance to Athena through valor and unwavering dedication, striving to reclaim his family’s honor. His fiery temperament sparks clashes with calmer allies like Aries Mu, yet he shares a bond of mutual respect with Virgo Shaka, their contrasting dispositions underscoring an unexpected camaraderie. In his youth, Aiolia dyed his blond hair red to sever ties with his brother’s stained legacy, yet beneath this defiance simmers an unresolved tension between lingering resentment and enduring brotherly love. Mentored by John Black, he embraces a selfless combat ethos, prioritizing others’ safety above personal triumph. His arsenal includes lightning-fast strikes such as Lightning Plasma and Lightning Bolt—techniques eclipsing light speed—alongside the forbidden Photon Burst, a devastating move forged to honor his brother’s teachings. During the Sanctuary conflict, Gemini Saga’s Demon Emperor Fist manipulates Aiolia into a mind-controlled duel against Pegasus Seiya. The spell shatters when Cassios, once Seiya’s rival, intercepts a fatal blow with his own life, jolting Aiolia back to his senses. This sacrifice catalyzes his resolve to absolve Aiolos’s name and reaffirm his devotion to Athena. In the Hades Chapter, Aiolia allies with Mu and Scorpio Milo to challenge Wyvern Rhadamanthys in Hades’ realm. Stripped of their strength under the god’s dominion, they fall captive to Cocytus’s icy depths. Athena’s divine power later revives them, enabling their participation in breaching the Wailing Wall—a pivotal sacrifice where their Gold Cloths pierce the barrier to Elysium. The *Soul of Gold* spin-off resurrects Aiolia in Asgard, where he joins forces with Lyfia, Queen Hilda’s handmaiden, to thwart the god Loki’s schemes. Temporarily restored to full might, he ascends his Gold Cloth into a God Cloth, striking the decisive blow against Loki as Odin’s champion. His farewell gift to Lyfia—a protective necklace—etches his legacy as a guardian transcending mortality’s bounds. Throughout his journey, Aiolia’s narrative weaves redemption, loyalty, and defiance against familial scorn. His dynamic with allies and foes alike balances fiery righteousness with empathy, charting his transformation from a tormented warrior to an indomitable pillar of Athena’s cause.