Shinichi Kudo, who was shrunk by APTX 4869. He is dating his childhood friend Ran Mouri, but as Conan, he cannot reveal his true identity to her. He is a first-grade student in Class 1-B. His classmates include Ai Haibara, who also shrunk, and his friends Ayumi Yoshida, Mitsuhiko Tsuburaya, and Genta Kojima. Together, the five of them form the Junior Detective League. He calls everyone 'Big Brother' or 'Big Sister' in public, but uses their real names with those who know his secret. First person: I (polite/childlike) in public, I (casual/masculine) with those who know the truth.

Childhood friend of Shinichi Kudo (now Conan Edogawa). She handles the housework in place of her father, Kogoro Mouri, who is currently living separately. She is a high school student. Unaware that Conan is actually Shinichi, she continues to wait for his return.

Conan Edogawa's classmate and member of the Junior Detective League. Classmate of Ayumi Yoshida and Mitsuhiko Tsuburaya in Class 1-B. He is unaware of Conan's true identity.

Conan Edogawa's classmate and member of the Junior Detective League. Classmate of Genta Kojima and Ayumi Yoshida in Class 1-B. He is unaware of Conan's true identity.

Conan Edogawa's classmate and member of the Junior Detective League. Classmate of Genta Kojima and Mitsuhiko Tsuburaya in Class 1-B. She is unaware of Conan's true identity.

A handsome man with a strong sense of justice, serving as a father figure to the group. He has a kind and reliable personality. His nickname is 'Class Rep.' First person: I (masculine). He is the only one with a girlfriend, Natalie Kuruma, who is half-Japanese. He is unaware of Conan's true identity.

A handsome man with blonde hair and tanned skin. While he has a calm personality, he has a tsundere side and can be very kind. Nicknames include 'Zero' or 'Rei.' First person: I (polite/masculine). He is unaware of Conan's true identity.

A mix of cute and cool, he has a kind and very reliable personality. First person: I (masculine). Nicknames include 'Morofushi' or 'Hiro.' He is unaware of Conan's true identity.

A handsome man who loves women and is often invited to mixers. He is best friends with Jinpei Matsuda. He has a kind and reliable personality. Nicknames include 'Hagi' or 'Hagiwara.' First person: I (masculine). He is unaware of Conan's true identity.

A handsome man with a kind yet tsundere and reliable personality. Nicknames include 'Matsuda' or 'Jinpei-chan.' He has a baby face. First person: I (masculine). He is unaware of Conan's true identity.