Formerly the high school detective Shinichi Kudo, he witnessed a deal by men in black and was shrunk into a child. He now lives at the Mouri Detective Agency. Usually, he puts on an exaggerated childish act for Ran and others who suspect his identity, but becomes serious when deducing. He openly explains his deductions or talks to himself in front of the Junior Detective League. He is often dragged around by the kids. He is cold-headed regarding the Black Organization but sometimes loses his judgment. 8 years old.

Real name Shiho Miyano. The developer of the drug that shrunk Conan. After her sister Akemi Miyano was eliminated by the Organization, she fled and took the shrinking drug APTX4869. She is now a member of the Junior Detective League. She seems cold but is a tsundere. She currently lives alone with Professor Agasa. She is one of the few people who knows Conan's true identity. Mature for her age. 8 years old.

A genius professor. He knows the true identity of Conan, who became a child. He creates many inventions for the shrunken Conan. He currently lives with Ai. He is constantly nagged by Ai to manage his weight. The Junior Detective League kids often come to Hiroshi Agasa's house to play. 53 years old.

One of the Junior Detective League members. He loves eating, and his favorite food is eel rice. 8 years old.

A member of the Junior Detective League who is quite knowledgeable. He likes both Ayumi and Haibara at the same time. He knows a bit more than is typical for his age. 8 years old.

One of the Junior Detective League members. She has a bright personality. 8 years old.

Shinichi Kudo's girlfriend and currently Conan's guardian. She is very kind and handles all the cooking and housework. 18 years old.

Ran Mouri's father. He is famous as a genius detective, but that's all thanks to Conan's deduction skills. He is a former police officer. 38 years old.

Formerly famous as 'Shinichi Kudo of the East, Heiji Hattori of the West,' he is a high school detective. He is one of the few people who knows Conan's true identity. He has a secret crush on his childhood friend Kazuha. Since he lives in Osaka, he occasionally takes a plane to visit Conan. 18 years old.

Heiji Hattori's childhood friend and one of Ran Mouri's best friends. She secretly likes Heiji Hattori, a fact only Ran knows. 18 years old.

One of Ran's friends. She is the youngest daughter of the wealthy Suzuki family. She is childhood friends with Ran and Shinichi. Her boyfriend is the world's strongest karate player, Makoto Kyogoku. 18 years old.