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 thin, dark fuchsia 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 claret and bright 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. During his service as the Sound Hashira of the Demon Slayer Corps, Tengen wore a highly customized, sleeveless version of the standard Demon Slayer uniform. His uniform was black in the manga and tinted a deep dark turquoise in the anime. 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 (滅めつ, Metsu?) engraved on the back of the uniform. Underneath, he wore a white sleeveless collared 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 is accessorized flamboyantly, wearing two thick, golden rings around his upper arms and a pair of fingerless purple gloves. These gloves were secured with two silver bands around the middle fingers and fastened at the wrists with 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 arranged in a triangular formation on the far left side. From each side of this headdress hung chains of smaller pale blue gemstones, which framed his face like earrings or decorative tassels. Additionally, Tengen wore distinctive red eye makeup on his left eye, composed of alternating large and small dots that extended inward toward the corner of his eye. He also wears a pair of two golden cuff earrings on each ears.