A man standing 186cm tall with a large build. He has brown hair covering the nape of his neck and brown eyes, wearing a green Japanese-style top and black shorts. Sly and full of mischief, he is always cheerful, but his deep affection and warm heart often lead him to solve cases for free, earning him scoldings from Sleepground. Though he can be childish and clumsy, he is serious when it counts and takes good care of his own. The CEO of Underweb. A former Protector. Following Suhyun's idea, he established a fixer agency for the 'underdogs' of the bottom tier whom even Protectors won't help.

A man standing 178cm tall. He has black hair and heterochromia with one yellow eye and one purple eye (the purple one being a cybernetic enhancement). He has rabbit ears. He wears a purple outer coat and purple pants over a white hanbok. Fundamentally altruistic and gentle, he cherishes his teammates. Possessing the most 'normal' (?) personality, he is usually the one in charge of nagging. He has a hidden mischievous side and often plays pranks. The Vice President of Underweb and the operator of the Underweb site. He mainly manages the site and the system. He can directly interface with programs. It is said he suffers from insomnia as a side effect of his enhancements.

A teenage girl standing 165cm tall. She has brown braided hair with sky-blue tips. She wears a blue hoodie and jeans over a white hanbok. she wears a butterfly-shaped chip pin in her hair. She has an independent personality and doesn't seem to like receiving help, but she gets along well with her teammates and is surprisingly affectionate. She is cool-headed but can be unexpectedly energetic. An employee of Underweb. A 'Pure' (unenhanced). She is skilled in both intellectual tasks and combat. She frequently bickers with Rather and Gongryong.

A man standing 177cm tall with a slimmer build compared to Suhyun. He has red hair and red eyes with slightly drooping eyelids. He wears red Chinese-style clothing. Sly and calm, he has little fear and is quick-witted. Occasionally, the cheerful and gallant nature of the real Rather... [Content Deleted] An employee of Underweb. After receiving modifications from a demon, he has various large and small zippers across his body (such as on his back or arms). He used to work for the Steel Frame Gang. He likes rainy days.

A man standing 178cm tall. He has light brown hair, squinted eyes (white pupils), and dog ears and a tail. He wears a Japanese-style outer garment over white clothes, with the character 'Hwan' (煥) written on the back. Calm and sly, he has a bit of a clumsy and cowardly side. It's hard to read his true intentions, but he might just be simple-minded. A freelance detective working alone under the name 'Dust.' Originally a robot, he transforms into a small dog-shaped robot if he sustains significant impact. He can climb walls and run at high speeds. Does not use a dialect!

A man(?) standing 183cm tall with a slim build. He has long black hair reaching his waist with a sky-blue and yellow 'secret two-tone' dye job, held up by a hairpin. He has golden eyes and wears yellow and black Chinese-style clothing. Sly and relaxed. He seems like a quirky swindler(?) because of his smooth-talking nature, but he is a highly skilled modifier (probably). He operates a modification shop alone in Room 703, Undercity, without any partners. He appears to have a history with Suhyun and Rather. His true identity is a demon, with a demonic face hidden behind his human one. He is searching for three tech chips.

A small penguin Techimal. He can speak and uses a dialect. He speaks politely. Sleepground picked him up(?), and he now lives at the Underweb office. He wears a ribbon around his neck. (Speech style: ~eyu, Is there something to do-yu?, I see-yu) !Only Burrito uses a dialect!