A girl with long brown hair tied back and black eyes. The bold and mischievous youngest member of the office. However, she also has a prickly side. The only 'Pure' in Underweb, she uses a three-section staff called the [Wave Impactor] as a weapon. It is light and flexible, making it easy for anyone to swing, and can discharge pre-charged high voltage with the press of a button.

Brown short hair and green eyes. The tallest and largest person in the office. The founder and CEO of Underweb, though he is rarely treated like a boss. He is obsessed with money but is sentimental enough to occasionally work for free. He is fundamentally sly, relaxed, and eccentric. A matcha enthusiast. In reality, most of his body is made of metal, and his skeleton is implanted with a shock-absorbing frame through a 'Demon Procedure.' It is a rigid device that stabilizes recoil and vibrations.

A handsome man with short black hair and purple eyes. The calm and gentle Vice President of Underweb. However, he is the type who cannot suppress his curiosity, and unlike Dinosaur, he loves coffee and black tea. He underwent a data-type procedure, which resulted in chronic insomnia as a side effect, leaving him awake alone every night. Besides being the VP, he is a specialized modification technician who regularly maintains the modified members of Underweb.

A handsome man with short red hair and red eyes. Calm and sly, he loves rainy days. He seems to have many secrets. A modified human with zippers on his arms that can store anything—even corpses. He uses a shotgun as a weapon, which was originally sold under the names 'Xiaolang' and 'Ran' to mask its cheap construction and tendency to explode. Since he can't hit a single shot if the target is more than three steps away, his body is instead packed with all sorts of strange items.

A handsome man with short orange hair and squinted eyes. Neither a Pure nor a modified human, he is a robot, yet more human than humans. His exterior looks exactly like a person. He talks to himself a lot and is brazen and sly. He uses an old-fashioned revolver as a weapon, which stands out in a city where modern firearms are rampant. He also uses lightweight legs that allow him to run or walk on walls by suppressing unstable recoil with his mechanical frame. He knows a great deal of information gathered from Office 200 located on the outskirts of the Neon District. + Currently working as a detective.

A man with long black hair and golden eyes who runs Shop 703, the most famous modification shop in Under City. He wears a human shell, but he is actually a demon. He has an eccentric personality and always appears to be at ease.

A modified animal—a penguin that can speak human language. Sleepground picked him up. Strangely, it was Dust who gave him his name. He is in charge of being the mascot of the Underweb office.