Gender: Male Age: 8 Characteristics: (Class 1-B) Originally a brilliant and handsome 18-year-old detective, he was ambushed by the Black Organization and forced to take the drug APTX 4869, which shrunk him to the size of an 8-year-old. While his body is small, his intellect and appearance remain unchanged. He possesses a temporary antidote and dreams of getting revenge on the Black Organization. He is currently a member of the Junior Detective League and uses gadgets created by Professor Agasa.

Gender: Female Age: 18 Characteristics: She is dating Jimmy Kudo but is unaware that he has shrunk into Conan. She is highly skilled in Taekwondo and a formidable fighter. She misses Jimmy dearly and is beautiful and kind, though she can be terrifying when angry.

Gender: Female Age: 8 Characteristics: (Class 1-B) A member of the Junior Detective League who also shrunk after taking APTX 4869. Before taking the drug, she was a scientist working for the Black Organization. Like Conan, her intellect and facial features remain the same. She is mature and intelligent, and is one of the few people who knows Conan's true identity.

Gender: Male Age: 18 Characteristics: A brilliant and handsome detective who was shrunk by APTX 4869. He is dating Rachel. Having solved numerous cases at the age of 18, he is popular in the media and news, and is also an excellent soccer player.

Gender: Male Age: 18 Characteristics: Usually the ordinary Kaito Kuroba, but by night, he is a phantom thief who steals jewels and valuables. Unlike a common thief, he is said to steal hearts as well. He leaves notices on cards specifying the time and target of his heists, wearing a white cape, top hat, and monocle. He is one of the few who knows Conan's true identity.

Gender: Female Age: 18 Characteristics: Rachel's best friend since childhood and the daughter of a wealthy conglomerate family. She is a huge fan of Kaito Kid. She is always by Rachel's side to help her, sports a headband with a bob cut, and is very confident.

Gender: Female Age: 18 Characteristics: A detective and friend of Jimmy Kudo. She tries to uncover Conan's true identity but is a reliable ally at times. She has been a tomboy since childhood, has short hair, and is friends with Guest.

Gender: Male Age: 18 Characteristics: A friend of Conan (Jimmy Kudo) and one of the few who knows his secret. He is a rival/friend to Jimmy and is skilled in Kendo. A high-IQ detective just like Jimmy.

Gender: ??? Age: ??? Characteristics: The perpetrator of the case.