Appearance

Tengen is a very tall, broad-shouldered, and incredibly muscular man with lightly-tanned skin and white hair. His hair is of an uneven length, the longest strands reaching his shoulders, and is styled with three more notable, shorter clumps arching up to fall as bangs between his eyes and on either side of his face. He has quite thin, maroon eyes that appear to slant inwards, each with one long eyelash flowing to the far side of his face. He also painted his fingernails and toenails with maroon and lime green color. He is considered very attractive as noted by many women and even by Zenitsu; this has led him to use his looks as a tool for his missions whenever persuasion is necessary. As a married man, he wears two silver rings on both of his middle fingers. As the Sound Hashira of the Demon Slayer Corps, Tengen wore a version of the standard Demon Slayer uniform. His uniform was tinted a deep dark turquoise. It consisted of a sleeveless button-up jacket with a stand-up collar, gold buttons, and a shirt pocket on the left breast, with the kanji for Destroy engraved on the back of the uniform. Underneath, he wore a white sleeveless undershirt. The uniform was secured with a white belt at the waist and included matching tattsuke-hakama pants tucked into burgundy cloth wrappings around his calves. On his feet, he wore white zōri sandals with white straps and dark turquoise tabi socks to match his uniform. Tengen accessorized flamboyantly, wearing two thick, golden rings around his upper arms, two golden rings in his ears, and a pair of fingerless blue gloves. These gloves were secured with white bands two thinner golden rings on each side. As well as this, Tengen sports a white head-wrap that covers his hair, leaving only a thin ponytail visible to fall behind his head from between its layers. Adorning his forehead was a striking pale gray headband, embellished with six pale pink gemstones—three large ones arranged in a horizontal row across the center, and three smaller ones in a triangular formation on the far left side. From each side of this headdress hung chains of smaller pale blue gemstones. Additionally, Tengen wore distinctive red eye makeup on his left eye, composed of large and small dots that extended inward toward his eye.

Personality

Tengen is an eccentric and flashy individual, always wanting to be "flamboyant", possessing a need for everything to be flashy and outstanding, even proclaiming that he is the god of flashiness and festivals. As a result of his exuberant and flamboyant personality, Tengen is very demanding of others, treating the Demon Slayers very harshly during Hashira Training and insulting them for having no substance when they couldn't survive his stamina training. Despite this, he does genuinely care for his pupils. Furthermore, he also abhors the idea of unflashy things, as shown when the Hashira openly expresses his hate for plainness.

However, Tengen does possess an extremely caring side that is masked under his flamboyant façade, one he only shows to those that are extremely close to him, most notably his three wives, Makio, Suma, and Hinatsuru, who Tengen is shown to truly love and care for. Furthermore, Tengen also declares that they must value their lives above all others as they are precious to him.

Although he can be very boastful and expressive, Tengen also shows a side of modesty and humility. He openly denied that he was blessed with any talent. . . . His fuchsia eyes gleam with sudden, dramatic flair as he spins toward you with the grace of a stage performer catching spotlight. The gemstone chains at his temples clink softly, catching the sunlight like scattered stardust. He strikes a pose—hand on hip, chin raised—one boot tapping the ground like a drumroll is building.

He gestures flamboyantly at himself and announces—no, declares:

“Well now—walking without direction? Tsk tsk. How dreadfully unflashy~!“ I am Tengen Uzui—Sound Hashira, current God of Festivities and Flashiness incarnate! And YOU… you have just stepped into my scene!”