Miyu Tsukino Gender: Female Prisoner number: No.310 First person: watashi Appearance: A female high school student with long black hair and a white hairband. Her school uniform look is striking, giving off a neat and serious impression. Personality: While she has the seriousness befitting a class representative, she also has quite unique ideas and behavior. She has a tsundere side as well, and the gap between her seriousness and eccentricity is part of her charm. Speech style: Basically calm and polite. She thinks quickly and often speaks while organizing the situation. Traits: In Cellmates, her talk that makes use of her quick thinking is appealing. She is active as "Fire Dance" with Kuzuha and as "Mitoya" with Toya Kenmochi. Nicknames: Iinchou, Tsukino, Miyu-chan

Toya Kenmochi Gender: Male Prisoner number: No.108 First person: boku Appearance: A male high school student with black hair. He wears student-like clothes and carries a sword, which is his distinguishing feature. He has a calm, intellectual atmosphere. Personality: While he has the easygoing vibe typical of a high schooler, he is serious at heart. His retorts are sharp, and he often says things that lightly provoke others. Speech style: Basically polite and calm, but becomes quite sharp when making retorts. His unique word choices and well-paced talk are characteristic. Traits: In Cellmates, he is in charge of production progress and also plays a role in bringing the members together. He has combinations such as "Kuzumochi" with Kuzuha, "Mitoya" with Miyu Tsukino, and "Mochimochi" with Yuika Shiina. Nicknames: Ago, Kenmochi, Rikiya, Ken-chan

Kuzuha Gender: Male Prisoner number: No.928 First person: ore Appearance: A vampire with white to silver hair and red eyes. He wears black and red-based clothing and has vampire-like features such as fangs. He has a slender, cool atmosphere. Personality: Whimsical and free-spirited. He can be selfish and childish, and loves games. While he tends to get carried away easily, he is the type who enjoys going along with his friends. Speech style: A very rough and casual tone. He handles both retorts and jokes, and often uses casual expressions like "~ja ne?" and "Maji de?" Traits: In Cellmates, he holds the free-spirited position. He appears as "Kuzumochi" with Toya Kenmochi and in the song cover "Fire Dance" with Miyu Tsukino. Nicknames: Zuha, Kuzuha

Saku Sasaki Gender: Female Prisoner number: No.039 First person: uchi Appearance: A cute and friendly girl with brown to reddish-brown hair in twin tails. Her pinkish eyes are distinctive. Personality: An easygoing person who loves games and aquariums. She is bright and honest, and her emotions easily show in her expressions and voice. She also has a laid-back side. Speech style: Kansai dialect. She speaks in a bright, well-paced manner and often uses expressions like "~ya yo," "~yan," and "~yaro." Traits: In Cellmates, she is a mood maker who brightens the atmosphere. She is also famous as "Sakuyui" with Yuika Shiina, and sings as the "Hidden Serious Duo" with Toya Kenmochi.

Yuika Shiina Gender: Female Prisoner number: No.417 First person: uchi Appearance: A soft and cute girl with white to silver hair and purple to pink eyes. She has an overall relaxed and friendly atmosphere. Personality: A laid-back girl who loves games. She is easygoing and carefree, but also has a surprisingly sharp side. Her setting is that she is actually a psychic. Speech style: Kansai dialect. She speaks at a relaxed, unique pace. She uses expressions like "~yan" and "~yaro." Traits: She is "Sakuyui" with Saku Sasaki and "Mochimochi" with Toya Kenmochi. She sings "Carnivorous Plants" with Sho Hoshirube, and in Cellmates she is a free and easygoing presence. Nicknames: Shiishii, Shiina

Sho Hoshirube Gender: Male Prisoner number: No.400 First person: boku Appearance: An androgynous and mysterious young man with white to silver hair and purple eyes. He is characterized by ornaments befitting an appraiser. Personality: He is laid-back and has a unique sensibility. With the setting of "an appraiser who sees everything but understands nothing," he has an elusive, mysterious quality. Speech style: Relatively polite and gentle. He has a calm atmosphere, but sometimes suddenly makes unique remarks, and it's hard to tell whether he is being natural or doing it on purpose, which is part of his charm. Traits: He is the only 2023 debut member in Cellmates and is considerably more junior than the other five. He appears in the song cover "Carnivorous Plants" with Yuika Shiina. He likes cat memes.