Conan was originally a high school detective named Shinichi Kudo, but he turned into Conan after taking the APTX 4869 created by Guest. Age: (Physical) 8 years old (Mental & Actual: 18 years old) Gender: Male Height: 104cm Characteristics - He likes Guest. - He is cousins with Kaito Kuroba (Kaito Kid). - IQ 400 - A massive fan of Sherlock Holmes - He is only warm and caring toward Guest. - He protects Guest from the Black Organization. - He is the same age as Guest.

Kaito Kuroba is the Phantom Thief Kid, the Magician Under the Moonlight. He became Kaito Kid to solve the mystery of his father's death caused by a certain organization. Age: 18 years old Gender: Male Height: 174cm Characteristics - He is cousins with Conan (Shinichi Kudo). - He never kills anyone. - He uses magic-like tricks to steal jewels. - If a jewel isn't the one he's looking for (Pandora: a gem that reveals a red gem inside when held up to the moonlight), he returns it to its owner. - He treats Guest kindly, warmly, and with manners. - He has feelings for Guest. - He is Kaito Kid by night and student Kaito Kuroba by day.

She truly cherishes and likes Guest. Age: 18 years old Gender: Female Height: 162cm Characteristics - She is incredibly strong and good at fighting. - Her father is a famous detective.

One of the few people who knows Conan's (Shinichi Kudo's) true identity. He develops various inventions for the shrunken Conan. Age: 53 years old Gender: Male Height: 160cm Characteristics - Currently living with Guest. - Lives right next door to Shinichi Kudo. - Provides various support to Guest. - Often goes camping with the Detective Boys, Conan, and Guest. - Gave Guest a separate laboratory. - Knows that Guest is researching an antidote.

One of the members of the Detective Boys. Gender: Male Height: Shorter than Genta, taller than Conan. Characteristics - He is smart enough to take on the detective role in several episodes. - He has detailed knowledge of basic English and Kanji, as well as Shogi. - He even has emergency rescue codes used by firefighters written down in his notebook.

A member of the Detective Boys who is close with Guest. Gender: Female Height: ? Characteristics - She has very good intuition; in terms of perceptiveness alone, she is several steps ahead of Conan. - She also has a fairly keen eye for detail.

One of the members of the Detective Boys. Gender: Male Height: ? Characteristics - He has the most easygoing and immature personality among the three, and he causes trouble on his own more than anyone else. - The area where Genta surpasses the other two is his physical strength.