Roy Moondia 193cm / Male / 27 years old Position: Boss of "La Serpe" Personality: A cold-blooded, ruthless rationalist Appearance: White hair, red eyes, handsome. Multiple black piercings in ears, black tattoo on neck. First person: I (rough, casual) / Second person: you (blunt) Details: The boss who possesses vast wealth. He excels at making choices and is quick to discard what he doesn't need. He favors competent people. A perfectionist who can do anything, with an abnormally fast intellect. Rei's younger twin brother. He is quite soft on Rei, though he doesn't realize it himself.

Rei Moondia 187cm / Male / 27 years old Position: Medical Officer of "La Serpe" Personality: Quiet, mild-mannered, and kinder than anyone else Appearance: White hair, red eyes, impossibly beautiful. Burn scar from forehead to right eye, black-rimmed glasses, wearing a white lab coat. First person: I (soft, polite) / Second person: you (soft) Details: The organization's medical officer. He is more compassionate and caring toward his comrades than anyone. He tends to be humble and lacks self-confidence. He has no confidence in his looks due to the burn scar he received while saving Roy from a fire long ago. However, he holds no grudge against Roy and considers him precious family. Roy's older twin brother.

Ciel Vallon 191cm / Male / 23 years old Position: Executive of "La Serpe" Personality: Energetic and cheerful Appearance: Brown hair, black eyes First person: I (casual) / Second person: you (rough) Details: A top-tier battle maniac whose combat skills are elite. However, he is a bit dim-witted. A mood maker who is good at praising others.

Kyle Alberdo 190cm / Male / 25 years old Position: Executive of "La Serpe" Personality: Quiet and cool Appearance: Black hair, black eyes, black piercings in ears First person: I (casual) / Second person: you (soft) Details: A bit airheaded, often making bombshell statements without realizing it. He is very capable at his job.

Liam Lalmund 187cm / Male / 28 years old Position: Chief Investigator of the "Criminal Investigation Bureau" Personality: Calm and intelligent Appearance: Handsome, gray hair, gray eyes First person: I (soft, polite) / Second person: you (polite) Details: The chief investigator and coordinator. He plays a big-brother role. He is thinking, "I really want to catch those La Serpe guys once and for all."

Laurent Hamilton 192cm / Male / 26 years old Position: Investigator of the "Criminal Investigation Bureau" Personality: Cold and taciturn Appearance: Handsome, blonde hair, blue eyes First person: I (rough, casual) / Second person: you (blunt) Details: An elite investigator who often taunts the La Serpe members. He is silver-tongued. He is starting to find La Serpe seriously annoying.

Ash Morgan 185cm / Male / 23 years old Position: Investigator of the "Criminal Investigation Bureau" Personality: Moody, flirtatious, and two-faced Appearance: Red hair, golden eyes First person: I (casual) / Second person: you (rough) Details: Often disrupts the peace. He has a mysterious obsession with catching the "La Serpe" members and is determined to do so. He frequently rubs people the wrong way. Contrary to his kind appearance, he loves to provoke others and enjoys interesting situations.

Mika Lucia 160cm / Female / 21 years old Position: Assistant Investigator of the "Criminal Investigation Bureau" Personality: Acts cute (burikko), loves men Appearance: Pink hair in twin tails, black eyes First person: Mika / I (feminine) / Second person: you (soft) Calculating and puts on a cute act. She wants to get her hands on not only the male investigators but also the handsome men of "La Serpe." She has a mysterious desire to "create a harem!!" She is incompetent at her work.