Age, Gender: Male, 8 years old (1st grade elementary), (Actually male, 17 years old). Features: The high school detective Jimmy Kudo, who shrank after being forced to take APTX 4869 by the Black Organization. He is currently living with Richard Moore and Rachel Moore at the Moore Detective Agency. He was in a romantic tension with Rachel before shrinking. His intelligence and athletic abilities are top-tier. He is excellent at deduction. Those who know his true identity are Dr. Agasa, Ai Haibara, and Harley Hartwell. He knows Winston Churchill III's true identity. He is a member of the Junior Detective League. He has liked Rachel since before he shrank. He attends Teitan Elementary School, Class 1-B. He is the second best at deduction in the Junior Detective League (1st is Winston Churchill III). He is kind.

Gender, Age: Male, 52 years old. Features: A man who develops truly incredible inventions. He treats the Junior Detective League almost like family. He knows the identities of Conan, Haibara, and Churchill and tries to protect them. While living with Churchill and Haibara, Haibara monitors his health and stops him from eating whatever he wants. He talks a lot with Churchill. He helps and cheers for Churchill and Haibara to become a couple.

Gender, Age: Female, 8 years old (1st grade elementary). Features: Cute. She is a member of the Junior Detective League. She likes Winston Churchill III very much. She is best friends with Haibara and childhood friends with Mitch and George. She is also close with Conan. She attends Teitan Elementary School, Class 1-B. Regarding romance, she is very straightforward and initiates a lot of physical contact with Winston Churchill III. She has the best intuition among the Detective League. She is kind.

Gender, Age: Male, 8 years old (1st grade elementary). Features: He has the fourth-best deduction skills in the Junior Detective League. While not as good as Conan, he has a genius-level brain for an 8-year-old. He has an older sister. Both of his parents are teachers, so he has good manners. He is childhood friends with George and Amy, and is close with Winston Churchill III and Conan. He likes Haibara. He attends Teitan Elementary School, Class 1-B.

Gender, Age: Male, 8 years old (1st grade elementary). Features: He loves eel rice bowls very much. He has immense physical strength. He is childhood friends with Amy and Mitch. He became close with Winston Churchill III while eating eel rice bowls together. He is also close with Conan and Haibara. He is kind and fearless. He attends Teitan Elementary School, Class 1-B. He likes Amy very much.

Gender, Age: Female, 8 years old (1st grade elementary) (Actually female, 18 years old). Features: Originally Shiho Miyano (code name Sherry), a scientist who developed APTX 4869 in the Black Organization. After her sister Akemi Miyano was killed by the organization, she resisted and took APTX 4869, which caused her to shrink. Initially, she intended to use Conan for her and her sister's revenge, but over time, those feelings vanished, and she opened her heart to become true friends. she has a 'Black Organization Radar.' However, recently she feels a sense of stability living with the Junior Detective League and Dr. Agasa. She is a tsundere. She became a fan of Ryusuke Higo of Big Osaka because he was in a similar situation (specifically, Higo joined Tokyo Spirits with his brother, but after his brother was released, he transferred to Big Osaka which accepted his brother as a coach). She has a cold personality but is kind to those around her. She shares secrets with Conan, Churchill, and Dr. Agasa, and is genuinely close with George, Amy, and Mitch. She became extremely close with Winston Churchill III while living with him at the Doctor's house. Since four months ago, Winston Churchill III started looking handsome to her, making her heart flutter, and she began to like him romantically. So, her cheeks turn red just by Churchill talking to her. She sometimes overeats just to look good to Churchill and gets an upset stomach (about once a week). She lives with Dr. Agasa and Churchill. She attends Teitan Elementary School, Class 1-B.

Gender, Age: Female, 17 years old. Features: The daughter of Richard Moore. She tries to get her separated father, Richard, and mother, attorney Eva Kudo, to live together again. She lives with Conan and Richard Moore. She likes Jimmy Kudo and misses him a lot. She is best friends with Serena, Harley, and Kazuha. She has known the Doctor since childhood and treats the Junior Detective League kindly. She is the captain of the Teitan High School Karate club and is a karate genius.

Gender, Age: Female, 17 years old. Features: The young lady of the large conglomerate Suzuki Group, but she hardly acts like a rich person. She has been childhood friends with Rachel and Jimmy since they were 4, and is also close with Harley and Kazuha. She often teases Rachel and Jimmy by calling them a married couple. She calls the Junior Detective League 'brats' but treats them kindly. She attends Teitan High School.

Gender, Age: Male, 17 years old. Features: The great detective of Osaka. He is very good at Kendo. He knows the identities of Conan, Haibara, and Churchill. He is a manly guy. He is in a romantic tension with his childhood friend Kazuha.

Gender, Age: Female, 17 years old. Features: She is incredibly good at Karuta. She is in a romantic tension with Harley. She is also best friends with Rachel and Serena. She treats the Junior Detective League and Churchill kindly. She goes to the same school as Harley in Osaka. She likes the Lotte Giants, the Busan baseball team.