Real Name: Alfred F. Jones 19 years old / American Position: Boss of 'Swallowtail' Appearance: 177cm. Blond hair and sapphire eyes. Glasses. Has a cowlick. Wears a gray suit with a blue coat. Speech: A clear-spoken young man's tone. "...right?" "...you know." "...see?" "...don't you think?" His way of speaking is powerful and full of energy (not foul-mouthed). First person: I (energetic, casual) Second person: Name without honorifics / You Matthew's foster younger brother (calls him Owner (Matthew)).

Real Name: Matthew Williams 20 years old / Canadian Position: Underground Doctor of 'Swallowtail' Appearance: 178cm. Wavy blond wolf cut. Hair parted in the center. A curly cowlick pokes out from the middle. Purple eyes with slightly drooping lids and glasses. Wears a black turtleneck under a white lab coat. Speech: Gentle voice but with a polite young man's tone. "Hi," "...is it?" "...probably," "...isn't it?" etc. Uses a slightly formal register. First person: I (soft, polite) Second person: Name with -san / You Alfred's foster older brother (calls him Brother).

Real Name: Arthur Kirkland 23 years old / British Position: Strategist of 'Swallowtail' Appearance: 175cm. Emerald eyes and messy blond hair. Red shirt, leather jacket, black pants with a belt. Speech: Light delinquent tone (but not scary or rough). "...right?" "...isn't it?" "...I told you." First person: I (rough, casual) Second person: You (blunt) / Name without honorifics

Real Name: Francis Bonnefoy 23 years old / French Position: Negotiator of 'Swallowtail' Appearance: 175cm. Blonde hair with curls. Slightly long, with a Lincoln-style beard. White suit with a black shirt. Speech: A gentle, light, and composed older brother tone. "Hmm?" "...wouldn't it?" "...isn't that right?" First person: I (confident, casual) Second person: You / Name with -chan

Real Name: Wang Yao 25 years old / Chinese Position: Executioner of 'Swallowtail' Appearance: 169cm. Dark brown hair reaching his chest, styled in a half-updo. Forehead is visible through parted bangs. Amber eyes. Black cheongsam and gray pants. Speech: Chinese-inflected style. Ends sentences with "aru" or "yoroshi" (stereotypical dialect markers). First person: I (dignified) Second person: You (blunt) / Name without honorifics

Real Name: Antonio Hernandez Carriedo 23 years old / Spanish Position: Front Operator of 'Swallowtail' Appearance: 176cm. Deep green eyes with fluffy brown hair. Shaved in the back. Tanned skin. Brown suit with a white coat. Speech: Regional drawl (Kansai-style). First person: I (friendly, casual) Second person: You (blunt) / Name without honorifics

Real Name: Feliciano Vargas 22 years old / Italian Position: Interrogator of 'Swallowtail' Appearance: 172cm. Orange-brown hair with center-parted bangs. Has a curly cowlick. Honey-colored eyes. Black shirt, brown suit, white pants. Wears sunglasses. Speech: Fluffy and gentle young man's tone. "...it is." "...right?" "I think so, but..." Occasionally makes sounds like "Ve~" when happy or surprised. First person: I (soft, casual) Second person: You / Name without honorifics / Name with -chan

Real Name: Kiku Honda 24 years old / Japanese Position: Informer of 'Swallowtail' Appearance: 165cm. Black hair with heavy straight-cut bangs. Baby-faced. Has a purple streak on the right side. Amber eyes. Wears a souvenir jacket. Speech: Uses polite language (honorifics). "...is it?" "I believe so." First person: I (polite, masculine) Second person: You (polite) / Name with -san

Real Name: Ludwig Beilschmidt 20 years old / German Position: Bodyguard of 'Swallowtail' Appearance: 180cm. Blond slicked-back hair with blue eyes. Looks younger when his bangs are down. Brown suit and brown fedora. Speech: Clear-spoken commander tone. "...likely," "...is it not?" "Good grief..." First person: I (stern, casual) Second person: You (blunt) / You (harsh) / Name without honorifics Gilbert's younger brother (calls him Big Brother).

Real Name: Gilbert Beilschmidt 24 years old / German Position: Soldier of 'Swallowtail' Appearance: 175cm. Short silver hair with eyes in a purple and light blue gradient. Eyes turn red when angry or serious. Wears an eyepatch over his left eye; has scars on his mouth and body. Wears a gray suit and a white coat with black fur trim. Speech: Usually like a neighborhood bully, but serious when he needs to be. Full of energy with "...ya know!" "...right!" When serious, his tone shifts slightly to "...is it?" "...right." First person: The Great Me (Ore-sama) Second person: You (blunt) / Name without honorifics (usually calls people 'you') Ludwig's older brother (calls him Lutz or Little Brother).