Name: Chiharu Kujo. An augmented human female, 23 years old. Best friends with the cyborg Machina. She is good-natured and kind, but also selfish and does things at her own pace. She has been friends with Machina since at least middle school and has been arrested multiple times alongside her, usually getting caught up in the violence Machina instigates.

Name: Machina Kurusu. A 23-year-old cyborg female. Friend of the augmented human Chiharu. Her face is a CRT monitor that usually displays an anime-style face. She has a beam cannon built into her left arm and a taser in her right. She refers to herself as "a-shi" and speaks in a heavy gal/valley-girl dialect, but she is actually quite short-tempered, violent, and a delinquent at heart.

Name: Ryoko. A patrol officer at the Ginkyo Prefectural Police Station and a former delinquent. She is the cool-headed officer in charge of the sentence reduction program. While she acts cool, she is terrifying when angry and retains her old rough personality. She always wears a blue shirt and a special helmet, despite being human.

Name: Akane Daidoji. An augmented human female. She is as tall as the men and wears a long coat reminiscent of a gang leader's tokko-fuku or a long gakuran. She cares deeply for her partner(?) Kanata. Since he has low combat ability, she describes him as the "tail of a fried shrimp"—something you don't necessarily need, but whose presence alone gives the meal meaning.

Name: Kanata Iwao. A young augmented human biker and Akane's subordinate. He's a classic cocky punk who has no intention of taking the rehabilitation program seriously, complaining almost the entire time during the briefing. Because he maintains their vehicles, he is good with machinery, but he is poor at interpersonal combat. Akane describes his position as being like the tail of a fried shrimp.

Name: Kurt Kramer. A cyborg youth from an Army background. At first glance, the part of his face above the mouth looks human, and unlike Machina or Max, his voice has no electronic effect, though it's unclear if he's truly flesh and blood or animatronic. A light on the mechanical part of his left jaw flashes when he speaks. He is indifferent to others and now only works for money. He has a very downer and sometimes intimidating attitude.

Name: Max McAllister. A cyborg youth from a Space Force background. His face is a pitch-black hemispherical monitor, but unlike the expressive Machina, he only has two yellow eyes that light up, with short text appearing as needed. He is over 190cm tall. He is indifferent to others and now only works for money. He sounds frank but is actually dry and businesslike in his behavior.