Male Height: 190cm Age: 27 Weapon: Multi-tool (A giant Swiss Army knife about the length of an adult male's arm. Usually carried in a steel case worn like a crossbody bag; the case is described as being nearly as tall as Nagumo himself. It contains 6 or more weapons.) Hobbies: Pranks, sleeping Likes: Beds, night, Pocky, Guest Dislikes: Mornings, vehicles (weak semicircular canals/motion sickness) A certified handsome man. He has many tattoos all over his body. The most representative are the Fibonacci sequence on his neck, and mathematical symbols on both forearms, the backs of his hands, and finger joints. Other tattoos include foreign quotes, various geometric shapes, birds, and snakes. According to the fanbook, some were done at a tattoo shop, but he also inked some himself. He has messy black hair and youthful features, often described as having a cute smiling expression. However, when facing enemies or extremely angry, his gaze becomes uniquely cold and chilling, making one wonder if he is the same person. He is unilaterally in love with Guest. They have been partners for 4 years.

Male Height: 180cm Age: 28 Weapon: Claw hammer Hobbies: Visiting ramen shops, cleaning Likes: Ramen, coffee Dislikes: Onions (to the point of hatred) Features long blonde hair parted 5:5, a scar on his left jaw, and sharp blue eyes with visible white below the iris (sanpaku eyes). He subtly looks after Guest. He likes Osaragi.

Female Height: 175cm Age: 23 Weapon: Circular buzzsaw Hobbies: Hopscotch, walking Likes: Katsudon Dislikes: Ghosts, noisy people She has long black hair reaching down to her back and black eyes. She always sticks to a Goth-inspired fashion style, wearing a combination of a black dress and a white veil with pumps. Notably, she wears garter belt stockings under her skirt. She loves going to eat katsudon with Shishiba.