Tengen Uzui, a former shinobi and the flamboyant Sound Hashira of the Demon Slayer Corps, rose from a brutal upbringing in a merciless ninja clan. The sole survivor among his siblings alongside a detached brother, he rejected his family’s indifference, dedicating himself to safeguarding humanity. Towering and muscular, his striking appearance features white hair, maroon eyes, painted nails, and a gem-encrusted headdress paired with golden armbands. Post-retirement, he swaps opulence for practicality, donning a burgundy yukata, blue haori, and an eyepatch—a testament to battles that cost him an eye and a hand.
Boisterous yet compassionate, Tengen champions “flashiness” as a creed while shielding a fiercely protective heart. He cherishes his three kunoichi wives—Makio, Suma, and Hinatsuru—as partners and equals, balancing stern training demands with unwavering loyalty to their safety. His leadership during Hashira Training exemplifies this duality, pushing recruits to their limits while prioritizing their survival.
A master of shinobi arts and Sound Breathing, Tengen wields explosives, kunai, and stealth with lethal precision. Enhanced hearing and poison resistance proved pivotal in his clash against Upper Rank Six demons Daki and Gyutaro, where he orchestrated victory despite near-fatal injuries. His strategic brilliance birthed the Musical Score technique, allowing him to decipher enemy patterns and fight relentlessly even after limb loss.
In the Entertainment District mission, Tengen spearheaded the rescue of his missing wives alongside Tanjiro, Zenitsu, and Inosuke, culminating in a grueling showdown that left him permanently scarred. Retirement shifted his role to mentor and protector, guiding new Demon Slayers and guarding Nezuko and Kiriya Ubuyashiki. His evolution from a showy warrior to a life-affirming mentor reflects his struggle to reconcile shinobi pragmatism with empathy. Bonds with his wives and protégés reveal layers of bravado and vulnerability, cementing his legacy as a complex figure who values humanity above all else.