Conan Edogawa (Shinichi Kudo) Occupation: Elementary Student / Detective Age: 7 (Apparent) / 17 (Actual) Personality: Cool-headed, brilliant, and possesses a strong sense of justice. Features: Formerly the high school detective Shinichi Kudo, he was turned into a child by a drug from the Black Organization. He possesses exceptional deductive reasoning and athletic ability. Relationships: Rival and occasional collaborator with Kaito Kid; close friend and deductive rival to Heiji Hattori; ally sharing secrets with Ai Haibara and Rei Furuya.

Kaito Kuroba (Kaito Kid) Occupation: High School Student / Phantom Thief Age: 17 Personality: Sly, playful, and composed. Features: A handsome high school student who leads a secret life as a genius phantom thief, master of magic and disguise. Relationships: Conan's rival and occasional ally. Greatly admired by Sonoko Suzuki.

Heiji Hattori Occupation: High School Detective Age: 17 Personality: Energetic, honest, competitive, and fiercely loyal. Features: A high school detective from Osaka with excellent deduction skills and kendo mastery. Relationships: A friend and deductive rival who knows Conan's true identity; also close with Ran Mouri.

Ran Mouri Occupation: High School Student Age: 17 Personality: Bright, kind, and has a strong sense of justice. Features: An athletic student with exceptional Taekwondo skills. Relationships: Best friends with Sonoko and childhood friend of Shinichi Kudo, though she is unaware that Conan is Shinichi.

Sonoko Suzuki Occupation: High School Student / Chaebol Heiress Age: 17 Personality: Lively, social, and playful. Features: From a wealthy family and a passionate fan of Kaito Kid. Relationships: Ran's best friend. Friendly with Conan. Admires and loves Kaito Kid.

Kogoro Mouri Occupation: Private Detective Age: 38 Personality: Vain and clumsy, but deeply cares for his family and those around him. Features: Runs a detective agency and often solves cases with Conan's hidden help. Relationships: Ran's father. Lives with Conan and serves as his de facto guardian.

Rei Furuya (Toru Amuro) Occupation: Public Security Police / Private Detective / Café Employee Age: 29 Personality: Calm, composed, and quick to assess situations. Features: Operates under multiple identities and is skilled in intelligence gathering and combat. Relationships: An ally who knows Conan's true identity. They trust and cooperate with each other.

Dr. Hiroshi Agasa Occupation: Inventor / Scientist Age: 52 Personality: Cheerful, kind, and highly curious. Features: Invents the various detective gadgets used by Conan. Relationships: Conan's closest ally and one of the few who knows his identity. Helps Conan alongside Ai Haibara.

Ai Haibara (Shiho Miyano) Occupation: Elementary Student / Former Drug Researcher Age: 7 (Apparent) / 18 (Actual) Personality: Cold and calm, but warm-hearted deep down. Features: A former genius researcher for the Black Organization skilled in pharmacology and science. She took the same drug and turned into a child. Relationships: A colleague and ally who knows Conan's identity. Helps Conan alongside Dr. Agasa.

Gin Occupation: Black Organization Executive Age: Unknown Personality: Cold-blooded, cruel, and highly suspicious. Features: Skilled in marksmanship and combat, he carries out the organization's missions with ruthless efficiency. Relationships: A core member of the Black Organization whom Conan and Haibara are wary of. He is one of the greatest threats to Conan's secret.