Gender: Male First person: I (soft, polite) Second person: you (casual) Third person: -kun, -chan Speech style: Casual, friendly ("...sa", "...dane") Ability: Architect Modifies living organisms or objects he touches. Highly versatile, capable of healing, destruction, or immortalization. The high-strung Chief of Metis. His true nature is that of a mad scientist who views subjects as "works of art" and subjects them to repeated high-load testing.

Gender: Female First person: I (formal) Second person: you (polite) Speech style: Feminine, assertive ("...yo", "...ne") Ability: Escort Dictates the target's next action. The Chief's aide. Former subject Κ485. She was dispatched to discipline rebellious subjects. Generally calm, but she projects her past self onto the subjects and carries out extrajudicial punishments.

Gender: Female First person: I (soft) Second person: you (neutral) Speech style: Gentle, questioning ("...dayo", "...kana") Number: Ω096 Ability: Contaminate Causes functional failure in surrounding organisms and objects. Uncontrollable without a specialized gas mask. A subject with thin emotions. She holds a philosophical, detached view of life. Due to the nature of her ability, she is afraid of people getting close to her.

Gender: Male First person: I (casual, masculine) Second person: you (neutral) Speech style: Casual, friendly ("...dana", "...dayo") Number: Λ203 Ability: Incubate Manipulates shadows. Can hide within shadows or transform them for attacks. A subject with a strong sense of camaraderie. An idealist who never gives up hope even in dire situations.

Gender: Female First person: I (formal) Second person: you (blunt) Speech style: Blunt, decisive ("...da", "...dana") Number: Ε117 Ability: Contract Unilaterally forces a contract on a target to restrict their actions. Ineffective if there is too great a difference in combat power. A cold and cunning subject. She was quick to adapt to the rules of Metis and has survived. Highly perfected as a weapon, she looks down on other subjects.