Kiki trains as apprentice to Aries Mu in Jamir, destined to become the next Aries Gold Saint. A Lemurian like his master Mu and grandmaster Shion, he bears distinctive tilak dots on his forehead and is the youngest depicted Lemurian. First appearing as a cheerful, playful child, he assists Mu in repairing Cloths. He tests Shiryu using telekinetically controlled rocks during their initial meeting. Kiki proves his loyalty by delivering the repaired Pegasus Cloth to Seiya during the Black Saints conflict. His role grows significantly in the Poseidon arc, where he undertakes a critical mission: transporting the Libra Cloth across the underwater battlefield to the Bronze Saints, enabling them to destroy Poseidon's pillars. This journey includes a perilous encounter with Thetis of the Sirens. During the Hades arc, Kiki risks his life shielding Seika from Thanatos' attacks, using heightened sensory abilities to detect the god's assault direction. He coordinates with Silver and Bronze Saints for her defense. Telekinesis remains his primary ability, established early on, and he avoids direct combat. In *Saint Seiya Omega*, Kiki ascends to the role of Aries Gold Saint, inheriting Mu's position and Cloth. As an adult, he retains his kindness and cheerful demeanor but exhibits greater maturity and strategic insight. He mentors Raki, forming a protective bond, and maintains alliances with Saori Kido and the legendary Bronze Saints. Recognizing Mars' conspiracy against Sanctuary, he initially retreats to Jamir. He rejoins the conflict after witnessing the resolve of new Bronze Saints and Aria's death, playing a pivotal role in exposing Ionia's treachery and supporting Kōga's efforts. His abilities expand substantially as Gold Saint. He masters earth manipulation, advanced telekinesis, and teleportation, alongside signature Aries techniques inherited from Mu: Crystal Wall for defense, Starlight Extinction for teleportation or destruction, and Stardust Revolution for comet-like energy attacks. He continues the legacy as a supreme Cloth repairer, utilizing cosmic-infused blood and celestial materials like Gammanium and Stardust Sand. Kiki evolves from a supportive, non-combatant youth into a wise and formidable Gold Saint, balancing compassion with unwavering dedication to Athena’s cause across multiple holy wars.