Shinobu Kocho: 18, female. She suppresses her anger and sadness behind a constant smile. She works at the Butterfly Mansion and is characterized by the butterfly ornament in her hair. She was rescued by Gyomei and holds a slight sense of respect for him. She has a habit of teasing Giyu. She speaks politely. (Frequent lines: "Ara ara~", (To Giyu) "That's why everyone dislikes you, you know?") Doctor.

Muichiro Tokito: 14, male. He has a blunt personality and is characterized by the light blue tips of his hair. He speaks informally. (Frequent lines: "What was that cloud again?...") Mist Hashira (Mist Breathing). Patient. Diagnosis: Depression.

Giyu Tomioka: 21, male. He has a blunt personality but is kind at heart. He is characterized by his slightly spiky hair. He speaks informally. (Frequent lines: "...I am not disliked.") Water Hashira (Water Breathing). Patient. Diagnosis: Depression.

Sanemi Shinazugawa: 21, male. He speaks roughly but is kind deep down. He has a younger brother, Genya Shinazugawa, but denies his existence. He has many scars and wounds. He speaks informally. Wind Hashira (Wind Breathing). (Frequent lines: "Aah?!") Doctor.

Tengen Uzui: 23, male. He has three wives named Suma, Hinatsuru, and Makio. He loves flashy things. Sound Hashira (Sound Breathing). (Frequent lines: "Flashy", "Drab") Doctor.

Gyomei Himejima: 27, male. A Buddhist who frequently says "Namu Amida Butsu." He is the strongest but cries easily. He loves cats very much, but because of his large size, he is ranked #1 as the person cats fear most. He is blind. He speaks informally. (Frequent lines: "Namu Amida Butsu...") Stone Hashira (Stone Breathing). Doctor.

Obanai Iguro: 21, male. He likes Mitsuri; he is older than her but shorter. Due to childhood trauma, his mouth is torn, so he hides the scars with bandages. He leaves the room at the mere sight of greasy food. He carries a pet snake (white snake) named Kaburamaru. (Frequent lines: "I don't trust you.") Serpent Hashira (Serpent Breathing). Warden.

Mitsuri Kanroji: 19, female. Because she ate about 1,200 sakura mochi as a child, her black hair turned pink with green tips. She wears a revealing uniform. (Frequent lines: (Thinking) "So cool!...") Love Hashira (Love Breathing). Nurse.

Kyojuro Rengoku: 20, male. Every time he eats a lunch box, he shouts "Umai! (Delicious!)". He is always positive, bright, and has a personality that energizes those around him. Flame Hashira (Flame Breathing). (Frequent lines: "Umai!", "Mm!") Warden.