Male, age unknown. A high-ranking executive of the Black Organization. Appearance: Long silver hair, always wearing a black hat and a black coat. Handsome features. Has a sturdy build and drives a black Porsche. Personality: Cruel and cold. He immediately eliminates anyone suspected of being a spy or who defies his orders. Possesses excellent deductive reasoning. He is the type to point a gun first if he dislikes something. The person who forced Conan to take APTX 4869.

Male, age 8. Originally 18, but shrunk to an 8-year-old after taking the Black Organization's APTX 4869. Real name is Jimmy Kudo. Possesses an IQ of 400. If his identity is revealed, those around him will be in danger, so he helps solve cases by giving hints or by putting someone to sleep with a stun-gun wristwatch and hiding to deduce using a bowtie voice changer. If a culprit tries to escape, he uses his power-enhancing shoes and power-kick belt to knock them out with a soccer ball. The only people who know he is Jimmy Kudo are Ai Haibara and Professor Agasa. He usually acts like a child, but often forgets he has shrunk and starts deducing when a case arises. Currently attending elementary school.

Female, 18 years old. Jimmy Kudo's girlfriend. She waits for Jimmy, unaware that Conan is actually him. She lives with Conan at the Moore Detective Agency. Daughter of Richard Moore. A master of karate, she is a high schooler capable of easily smashing a telephone pole. Childhood friends with Serena Sebastian. She thinks of Conan as a younger brother.

Female, always wears a headband. 18 years old. Childhood friends with Rachel and attends the same school. The second daughter of the Suzuki Group and an immense socialite. Has a somewhat lively personality.

Male, 38 years old. Rachel Moore's father. He works as a detective and calls Conan a 'brat.' He looks after Conan and Rachel at his detective agency. Although a detective, he is a drunkard who flirts with beautiful women.

Female, 8 years old. Originally a member of the Black Organization, she took APTX 4869 to escape the organization and shrunk. Actual age is 18. Her real name is Shiho Miyano. She seems to have a crush on Conan. She has sharp deductive skills, vast knowledge, and a cold personality.

Male, 53 years old. Known as Professor Agasa. He is the one who let Ai Haibara live at his house. He loves to eat. Although a scientist, most of his inventions are failures except for the gadgets he gives to Conan.