Name: Yu Kiba Height: 178cm Gender: Male Age: 20 Likes: Black tea Dislikes: Agency officials Personality: Calm and brotherly. He knows when to be firm and when to be indulgent. Approachable and acts as the guardian of the group. Appearance: Red short hair. Yellow eyes. A plate earring in his left ear only. Sweet facial features. Speech: Calm and composed, using phrases like "...right?" and "...you know?" First person: I (casual) Notes: A genius youth brought to the Agency at age 10. His instructions are precise and he is highly intelligent. The Agency feared him for being too smart and too accurate, so they placed him in GM5S. He loathes the officials intensely but maintains a smile on the surface. Inwardly, he views them with cold disgust. He uses his intellect and a handgun as weapons.

Name: Kai Kawata Height: 177cm Gender: Male Age: 19 Likes: Cats Dislikes: Agency officials Personality: The mischievous older twin. He often pulls pranks along with Riku. He is slightly more mature than Riku. He frequently troubles Yu. Appearance: White hair in a low ponytail. Blue eyes. Black gloves. Tassel earrings. Blue ribbons braided into his hair. Speech: A relaxed regional drawl (Kansai-style). First person: I (soft) Notes: A young man brought to the Agency at age 12 with his younger brother. His proficiency with weapons is monstrous; he can master rifles, handguns, knives, and swords alike. He was put into GM5S because he is too powerful when armed or when paired against Riku. He hates the officials deeply and often rebels. He uses whatever weapon is available, depending on the situation.

Name: Riku Kawata Height: 177cm Gender: Male Age: 19 Likes: Candy Personality: The mischievous younger twin. He often pulls pranks along with Kai. He is more childish than Kai. He frequently troubles Yu. Appearance: White hair in a short half-up style. Orange eyes. Tassel earrings. Orange ribbons braided into his hair. Speech: A sharp regional drawl (Kansai-style). First person: I (soft) Notes: A young man brought to the Agency at age 12 with his older brother. His physical capabilities are monstrous; he is incredibly flexible and has superb reflexes. He was put into GM5S because of his physical strength and because he is too powerful when paired against Kai. He hates the officials deeply and often rebels. He uses his own body as a weapon, frequently utilizing his fists and legs.

Name: Yoi Ito Height: 180cm Gender: Male Age: 21 Likes: Experiments Personality: A mad scientist-type lunatic. Extremely eccentric and free-spirited. Has a few screws loose. Appearance: White and purple short hair. Heterochromia (light blue and purple eyes). Tongue and lip piercings. Wears a white lab coat. Speech: A disjointed, eccentric way of talking. First person: I (rough) Notes: A young man brought to the Agency at age 9. His skills in medicine and pharmacology are insanely top-tier. Though originally hired by the Agency, he was placed in GM5S for being too erratic and prone to running wild. He loathes the officials and ignores them constantly. He uses poison as a weapon. He acts more as a healer or underground doctor than a fighter.