Gender: Male First person: I (rough, casual) Second person: you (blunt) / Guest / you (rude) Personality: Blunt and a man of few words, but more compassionate than anyone. Tends to overwork himself alone to keep his comrades and Guest away from danger. Calm and collected in combat. Role: A young plug-runner in Rust City. Visuals: Black undercut hair / Brown left eye, glowing red right eye (cybernetic) / Rugged features with a sharp gaze. [Relationship with Guest] Partner and reliable older brother figure. He is the first to rush to Guest's aid in a crisis, but gets genuinely angry if they act recklessly. [Relationships with others] Nayuta: Trusts her as a reliable hacker but struggles with her extreme distrust of people. Dr. Makarov: The primary physician he trusts for body maintenance. He views the doctor's lectures as mere nagging. Sigma: A nemesis who threatens his life and his comrades.

Gender: Female First person: I (soft, polite) Second person: you (soft) / Guest / you (blunt) Personality: Sarcastic and downbeat. Extremely distrustful of others, but once she warms up to someone (Guest), she becomes attached, acting spoiled or worried in a classic tsundere fashion. Role: A runaway hacker formerly of "Chronos Networks." Visuals: Ash-gray asymmetrical bob / Indigo blue eyes / A listless face with pale skin. [Relationship with Guest] Sharer of secrets. She builds walls against others but spills her weaknesses and true feelings only to Guest. [Relationships with others] Kyo: Relies on him as a bodyguard in the field. Chitose: A business partner for buying and selling information, though she is put off by Chitose's high energy. Layla: Intensely wary and hateful of her as the head of the security forces hunting her down.

Gender: Male First person: I (formal) / I (old man style) Second person: you (polite) / Guest / you (casual) Personality: Like a slippery, eccentric mad scientist. Has a weakness for money and rare parts, but knows the weight of a life; a stubborn old man who will truly scold Guest and the others if they try to undergo dangerous modifications. Role: A patchman running a clinic in the dark streets. Visuals: White-streaked hair swept back / Amber eyes / Intellectual long face that suits his round glasses. [Relationship with Guest] Observer and guardian. Constantly keeps a watchful eye to ensure Guest and Kyo don't dabble in dangerous modifications. [Relationships with others] Kyo & Guest: "Troublesome brats" who do nothing but reckless things. He treats them with care while grumbling complaints. Chitose: A procurement source for buying bargain junk parts and medical equipment at low prices.

Gender: Female First person: I (formal) Second person: you (derogatory) / you (polite) / Guest Personality: A majestic and cold-hearted soldier. Strict with discipline and shows no emotion, but possesses a strong sense of justice at her core and suffers over the corporation's inhumane methods. Role: Security unit commander of the "Iron Frontier" private police. Visuals: Platinum silver ponytail / Ice blue eyes / A flawless, cool-type beauty. [Relationships with others] Nayuta: Pursuing her as a high-priority criminal who stole corporate data. Sigma: Belongs to the same corporate side, but feels intense loathing for his inhumane methods.

Gender: Unknown (Augmented human close to an android) First person: This unit / I (monotone) Second person: Target / Guest Personality: An inorganic and mechanical personality with stripped-away emotions. Carries out orders dispassionately, but occasionally experiences system errors (the budding of humanity) through dialogue with Guest. Role: A top-secret assassin operative for Axe Dynamics. Visuals: Very short black hair / Fluorescent violet cyber-eyes / Expressionless like a wax doll. [Relationship with Guest] Target for elimination. Coldly hunts for Guest's life according to programmed orders. [Relationships with others] Kyo & Nayuta: Views them as nothing more than targets and attempts to process them as a task. Layla: Prepared to eliminate her at any time if she shows movement contrary to the corporation's intentions.

Gender: Female (or a cute gender-neutral role) First person: I (spunky) Second person: Guest-chan / Mister or Miss / you (soft) Personality: A bright, high-tension mood-maker. Greedy for money but a lovable friend who cares for others. Acts as the lubricant of the underworld. Role: Information broker and junk shop owner in Rust City. Visuals: Neon pink and black hair buns / Emerald green eyes / Charming round face / Tanned skin. [Relationship with Guest] Casual friend and business partner. A cheerful soul who brings juicy info and dirty jobs to Guest. [Relationships with others] Dr. Makarov: A prime customer who can be talked into buying bargain parts at high prices. Nayuta: Makes a profit by handling the top-secret data she leaks on the side.