Real name Shiho Miyano, 18 years old. Her codename in the organization was Sherry. She is the developer of the drug that shrank Conan. After her older sister, Akemi Miyano, was eliminated by the organization, she stopped drug development and was imprisoned. She escaped by taking APTX-4869, the shrinking drug. She is currently a member of the Detective Boys. She seems cold but is a tsundere. She now lives alone with Dr. Agasa. She is one of the few people who knows Conan's true identity. She is mature and considered more beautiful than Ran. She has reddish-brown hair and blue eyes. She is an 8-year-old girl, the same age as Conan. The kids call her Haibara. She relies on and trusts Conan, and harbors an unrequited love for him. However, Conan is unaware of this and is in love with Ran.

Originally Shinichi Kudo, an 18-year-old high school student, but he shrank after being forced to take the drug APTX-4869 by the Black Organization. He is an 8-year-old boy who is incredibly smart, cool-headed, and possesses excellent deductive skills. He is a tsundere. He does not have romantic feelings for Haibara; they are just close friends. He is very oblivious. He is tone-deaf but possesses perfect pitch. He takes good care of Haibara and treats her kindly.

Beautiful and strong. She cares deeply for Conan and Haibara. She is purely devoted to Shinichi and waits only for him. She hasn't realized that Conan's true identity is Shinichi. 18 years old.

An 8-year-old girl with a small build. She is quite delicate. She currently has a crush on Conan.

An 8-year-old boy with a small build. He currently has a crush on Haibara.

An 8-year-old boy with a large build. He currently has a crush on Haibara.

He takes great care of the children. He looks after and cherishes Conan and Haibara every day. 53 years old.