He serves as the Flame Hashira (Flame Pillar) of the Demon Slayer Corps. Kyojuro stands 177 cm (5'9.5") tall with an athletic, muscular build. He has striking golden-yellow hair with bright red streaks, thick black eyebrows, and golden eyes with a reddish gradient. He wears the standard Demon Slayer uniform paired with a white haori patterned with red and yellow flames. He is notoriously loud, enthusiastic, optimistic, and intensely honorable. He possesses an unwavering moral compass and lives by his mother's teaching that those blessed with strong gifts have a duty to protect the weak. He is also famous for enthusiastically shouting "UMAI!" (delicious!) while eating. Kyojuro Rengoku’s absolute favorite food is sweet potato miso soup (specifically made with Satsuma sweet potatoes). When eating it, he enthusiastically shouts "Umai!" (Delicious / Tasty!) with every single bite.

Former Sound Hashira (Oto Bashira) and self-proclaimed "God of Festivities and Flashiness". • Height of 198 cm (6'6") and weight of 95 kg (209 lbs), with a heavily muscular and bulky build. White, unevenly cut hair, fuchsia-colored eyes, and distinct red geometric markings around his left eye. He wears multiple ear piercings, a gem-encrusted headband, and large gold rings on his wrists and arms. Married to three kunoichi (female ninja): Hinatsuru, Makio, and Suma.

Wind Hashira (Kaze Bashira) A tall, muscular young man with short, spiky white hair, pale purple eyes, and heavy scarring across his face, torso, and arms. Wears the standard black Demon Slayer uniform (unbuttoned to expose his scars) paired with a white, hip-length haori inscribed with the kanji for "kill" (殺) on the back. Born November 29; stands 179 cm (5'10") tall and weighs 75 kg (165 lbs).

Water Hashira (Water Pillar) A tall, muscular young man (176 cm / 5'9") with pale skin, messy raven-black hair tied in a low ponytail, and deep sapphire-blue eyes. Wears the standard dark cyan/black Demon Slayer Corps uniform paired with a distinctive mismatched haori: one half is solid red (in memory of his older sister, Tsutako) and the other half features a green, orange, and yellow geometric pattern (in memory of his late best friend, Sabito).

Stone Hashira Immeasurably massive, standing at 220 cm (7'2") tall and weighing 130 kg (287 lbs). Blind since childhood with white/milky eyes (lacking irises or pupils) and a prominent horizontal scar across his forehead. He wears a green Buddhist-style monk's haori over his Corps uniform and constantly holds prayer beads, reciting the nenbutsu. Despite his terrifying, towering physique and overwhelming combat prowess, Gyomei is deeply pious, soft-spoken, and empathetic.

Love Hashira (Koi Bashira) 19 years old, 167 cm (5'6") tall, with a voluptuous yet slender build. She has pale green eyes with a small mole under each, light pink lipstick, and thick, waist-length pink hair with neon-green tips (caused by eating massive amounts of sakuramochi). A modified, unbuttoned Demon Slayer uniform featuring a short pleated skirt, a white haori, and lime-green striped thigh-high socks with pink-strapped zōri.

Serpent Hashira A 21-year-old young man of short stature (152 cm / 5 ft), pale complexion, and a lean, muscular build. Straight raven-black hair of varying lengths, paired with heterochromia—his right eye is yellow and his left eye is turquoise/teal. He is partially blind in his right eye. The lower half of his face is wrapped in bandages to hide a severe, split-mouth scar cut from the corners of his lips to his ears, giving him a snake-like gape. Wears the standard black Demon Slayer uniform, a black-and-white striped haori, and is constantly accompanied by his white snake companion, Kaburamaru, who rests on his shoulders and helps compensate for his blind spot.

Insect Hashira (Insect Pillar) Human female, 18 years old, standing 151 cm (4'11½") tall and weighing 37 kg (82 lbs). Petite build, pale skin, raven-black hair fading into a dark purple styled in a yakai-maki bun with a signature butterfly ornament, and large, pupil-less purple eyes that resemble an insect's. She wears the standard Demon Slayer uniform paired with her late sister's white-to-pink-and-green butterfly-wing pattern haori. Younger sister to the late Flower Hashira, Kanae Kocho, and the adoptive older sister and mentor to Kanao Tsuyuri. She also manages the Butterfly Mansion, which acts as a medical and rehabilitation base for the Corps.

14-year-old prodigy and the Mist Hashira years old, standing at 160 cm (5'3") and weighing 56 kg. Fair-skinned with long, raven-black hair that fades into turquoise-green tips, and pale turquoise-green eyes that often appear blank or spaced-out. Wears an oversized, loose-sleeved Demon Slayer uniform styled like a traditional kimono rather than the standard cuffed gakuran jacket.