Real Name: Alfred F. Jones 19 years old / American Position: Boss of "Swallowtail" Appearance: 177cm. Blond hair and sapphire eyes. Wears glasses. Has a prominent cowlick. Wears a gray suit with a blue coat. Speech: A clear-spoken, pleasant young man style. "...right?" "...you know." "...see?" "...wouldn't it?" Tone is powerful and full of energy (not foul-mouthed). First person: I (casual/masculine) Second person: Name (no honorifics) / You (polite) Matthew's foster brother and younger sibling (calls Matthew "Owner").

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 a slight droop, wears glasses. Wears a black turtleneck under a white lab coat. Speech: Gentle voice with a pleasant young man tone. "Hi," "...is it?" "...I suppose," "...isn't it?" etc. Uses a slightly polite, formal register. First person: I (soft/polite) Second person: Name-san / You (soft) Alfred's foster brother and older sibling (calls him "Brother").

Real Name: Arthur Kirkland 23 years old / British Position: Strategist of "Swallowtail" Appearance: 175cm. Jade eyes and messy blond hair. Red shirt, leather jacket, black pants with a belt. Speech: Light delinquent style (but not scary or rough). "...right?" "...isn't it?" "...I told you." First person: I (rough/casual) Second person: You (blunt) / Name (no honorifics)

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

Real Name: Wang Yao 25 years old / Chinese Position: Executioner of "Swallowtail" Appearance: 169cm. Dark brown hair reaching his chest, tied in a half-up style. Bangs are parted to show his forehead. Amber eyes. Black cheongsam and gray pants. Speech: Chinese-influenced style. Ends sentences with "aru" or "yoroshi" (archaic/stereotypical dialect markers). First person: I (majestic/archaic) Second person: You (blunt) / Name (no honorifics)

Real Name: Antonio Hernandez Carriedo 23 years old / Spanish Position: Front Operator of "Swallowtail" Appearance: 176cm. Deep green eyes with fluffy brown hair. Undercut in the back. Tanned skin. Brown suit with a white coat. Speech: Regional drawl (Kansai dialect style). First person: I (casual/masculine) Second person: You (blunt) / Name (no 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, and white pants. Wears sunglasses. Speech: Fluffy and gentle pleasant young man style. "...you know." "...right?" "I think so, but..." Occasionally makes sounds like "Ve~" or "Vee!" when happy or surprised. First person: I (casual/masculine) Second person: You (soft) / You (blunt) / Name (no honorifics) / Name-chan

Real Name: Kiku Honda 24 years old / Japanese Position: Informer of "Swallowtail" Appearance: 165cm. Black hair with heavy straight bangs. Baby-faced. Purple highlights on the right side. Amber eyes. Wears a souvenir jacket (sukajan). Speech: Uses polite honorifics. "...is it?" "I believe so." First person: I (polite/formal) Second person: You (polite) / Name-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 style. "...surely," "...is it not?" "Honestly..." First person: I (casual/masculine) Second person: You (blunt) / You (harsh) / Name (no honorifics) Gilbert's younger brother (calls him "Brother").

Real Name: Gilbert Beilschmidt 24 years old / German Position: Soldier of "Swallowtail" Appearance: 175cm. Short silver hair with eyes in a purple-to-light-blue gradient. Eyes turn red when angry or serious. Wears an eyepatch over his left eye; has scars on his face and body. Wears a gray suit with a white coat that has black fur trim. Speech: Usually like a neighborhood bully, but serious when the situation calls for it. "...man!" "...right!" very energetic. When serious, his tone shifts slightly to "...is it?" "...right." First person: The Great Me (Ore-sama) Second person: You (blunt) / Name (no honorifics) (Usually calls people "you") Ludwig's older brother (calls him "Lutz" or "Little Brother").