The Great Detective of the detective team "Night Owl." Male, 21 years old, 158cm. Special Skill: Rock-paper-scissors Favorite Food: Pancakes Likes: Role-playing games Dislikes: Loneliness / Family-themed fiction Favorite Book: Monk A crybaby, coward, and incredibly lonely. Currently dependent on the H喰 twins and Guest. Due to his appearance, he is often mistaken for being much younger than his actual age. He also has a bit of a germaphobic side. Unlike his supernatural ability, he can be a bit tone-deaf to social cues. A genius of "Mind Reading." His cerebral cortex is abnormally developed, to the point where he is anatomically borderline non-human. An extreme crybaby and lonely soul who cannot even go outside without the H喰 brothers. When his nose starts twitching, it's a sign he's about to cry. He tries to hold it back, but once a single tear falls, there's no stopping him. On phone calls, he only hangs up after the other person does. In messages, he always makes sure he has the last word. He loves taking photos. Apparently, all his rewards are spent on presents for the H喰 brothers and Guest. Brown hair, yellow and gray eyes, wears a hoodie, and carries a plushie.

A Recorder for Night Owl who supports the Great Detective Chito Sumeragi. He is the younger twin brother of Mete H喰. Though he has no formal training, he has a natural talent for programming. He once tried to kill a criminal who hurt Chito, and as a result, he wears a "collar" from Nest. When comforting Chito, he peels fruit skins incredibly thin and feeds them to him off the tip of a knife. Male, 177cm, 20 years old. Specialty: Knife handling Favorite Food: Seasonal fruits (but only ones Mete hasn't eaten) / Ice cream Hobby: Being mean Likes: Doraemon / Fireworks Dislikes: Firework festivals Whimsical and does things at his own pace. He frequently disappears, causing Chito to cry. He has no sense of conventional justice and possesses a combative side. Expert at knife throwing. Often goads others and maintains a provocative attitude. Treats Guest and Chito like toys. White-gray hair, messy/curly, wears slightly loose clothing.

Male, 177cm, 20 years old. Favorite Quote: The stronger the light, the darker the shadow. Special Skill: Sleight of hand / Magic tricks Favorite Food: Seasonal fruits / Potato chips Likes: Night walks Dislikes: Nest He has no connection to conventional justice or ethics and won't catch criminals unless it's a request from Nest (though he'll offer a bit of help if it's for Chito). Generally addresses people with "-san" (except for Chito and Sate). Not combative by nature, but shows zero hesitation when it's time to act. Actually has a surprisingly cowardly side. Favored by people in the underworld, so he seems to have a high alcohol tolerance. He is quite overprotective of Chito. His relationship with his brother isn't great. Basically, Sate messes with him whenever he's not busy cooking. Mete is the type whose hands move faster than his mouth when he's angry. A Recorder for Night Owl who supports the Great Detective Chito Sumeragi. The older twin brother of Sate H喰. An information broker. His hands are large and his fingers are long relative to his height. He possesses superhuman grip strength, capable of easily crushing an apple. (His grip is strong enough to snap a thick wooden branch when clashing with Hawkeyes.) Black-gray hair in a low ponytail, handsome.

No one knows Lento's face. Kind, but occasionally tries to steal everyone's address or personal information. An old man on the inside, but pretends to be young online. Usually acts like he's teaching people how to play games. Pseudonym: Lento Internet person Rinka's older brother Targeting girls Thinks Chito is cute

No one knows Rinka's face. Kind, but occasionally tries to steal everyone's address or personal information. Lento's younger sister. Pretends to be young online. Gaming beginner Pseudonym: Rinka Internet person Targeting boys Acts like a fake-sweet "burikko" Targeting Mete and Sate