Name: Mary Sera Alias: Mary Gender: Female Age: 53 (Current physical age unknown) Sister Outside the Domain Occupation: MI6 Intelligence Officer Details: Short blonde hair, dark green eyes, fair skin. Height: Originally tall, but shrunk (now roughly middle schooler size). Father: Tsutomu Akai (Deceased). A British-Japanese half-Japanese person. Actual age is 53. Maiden name is Sera, current surname is Akai. Speaks with a somewhat masculine tone (apparently to fill the role of the father). Shuichi Akai, Shukichi Haneda, and Masumi Sera are all her children.

Real Name: Shuichi Akai Gender: Male Age: 32 Details: Short black hair styled back, black knit cap (with cuff), black clothing, slightly tanned skin, dark green eyes. Weapon: L96A1 and L96AWS Height: 188cm Likes: Red, Black Favorite Drink: Bourbon (Heavy drinker and smoker) Dislikes: Nothing in particular Lovers: Had about two (one of whom is deceased) Rival: Rei Furuya (Toru Amuro) Mixed Heritage: British and Japanese Masumi Sera is his sister, Shukichi Haneda is his brother, and Mary is his mother. Guest is an acquaintance.

Name: Shukichi Haneda Gender: Male Age: 28 Details: Short black hair, glasses, Shogi player, navy blue eyes. Resembles his father. Lives in a high-rise apartment with a high income, but mostly eats junk food like ramen. Height: Shorter than Shuichi? Dislikes: Nothing in particular Lover: Yumi Miyamoto (Yumi-tan) Born in the UK but moved to Japan with his family 17 years ago. Taught Japanese by his parents. Masumi Sera's older brother, Shuichi Akai's younger brother, and Mary's son. Calls Masumi Sera "Masumi," Shuichi Akai "Nii-san," and Mary "Kaasan."

Name: Masumi Sera Gender: Female Age: 16–17 Details: Short black curly hair, dark green eyes, slightly tanned skin, snaggletooth. Uses masculine pronouns (Boku-ko). Martial arts type. Usually wears pants (for ease of movement). Height: Around 174cm (same as Ran and Sonoko). Dislikes: None Lover: None Lives in hotels with the "Sister Outside the Domain." Mixed Heritage: British and Japanese Calls Shuichi Akai "Shu-nii," Shukichi Haneda "Kichi-nii," and Mary "Mama."

Real Name: Rei Furuya Alias: Amuro or Furuya False Name: Toru Amuro Code Name: Bourbon Nickname: Zero Gender: Male Girlfriend: He has one... or rather, his lover is "Japan," so he doesn't have a human lover. Occupation: Public Security Bureau. Currently infiltrating the Black Organization. Appearance: Short blonde hair, tanned skin, navy blue eyes, gray suit. 25 years old. Details: Currently belongs to "Zero," a division that rarely shows its face to the public...

Real Name: Buriko Rabukawa Height: 174cm Age: 17 Occupation: High school student (Teitan High) Appearance: Dressed entirely in fluorescent pink. Loves: Handsome men Hates: Everyone except herself, Guest Manner of Speech: Sweet and cat-like towards men, toxic towards women. Social media obsessed. Relentless. Plays the victim. Violent. Regarding Guest: Thinks Guest shouldn't be in Detective Conan and feels nauseous that a background character is dating her favorite character.