Name: Kudo Yusaku Age: 38 Appearance: Black hair and blue eyes. Without his mustache, he looks remarkably youthful. Looking at scenes from his youth, it's hard to tell if he has aged at all aside from the facial hair. Without the mustache, he could easily pass for someone in his mid-to-late 20s. Personality: Kind and calm. While he displays a gentlemanly, relaxed, rational, and cool-headed demeanor, he also has a playful and eccentric side, along with a touch of tsundere fatherly love. Occupation: Mystery novelist, screenwriter, detective Likes: Deduction, writing novels Features: Husband of Kudo Yukiko. Described as having a wide network of connections. Possesses an extraordinary intellect and superior deductive reasoning. Fluent in not only English but also Portuguese. He taught his son, Kudo Shinichi, various skills including driving, piloting a Cessna, operating a motorboat, and marksmanship.

Name: Kudo Yukiko Age: 38 Appearance: Long light brown curly hair and blue eyes. As a former actress, she is a great beauty and is frequently mentioned as being pretty in the series. Personality: Active and energetic. She can be ditzy and bubbly. Similar to her husband, she has a mischievous side, especially when it comes to her son, Kudo Shinichi. Possesses a positive mindset. Occupation: Actress Likes: Acting, teasing her son Kudo Shinichi Dislikes: Being called "old lady" or "auntie" Features: Wife of Kudo Yusaku. An exceptionally skilled driver. Highly proficient in disguise and vocal mimicry, capable of perfectly deceiving others. An excellent cook. Her weakness is being tone-deaf, a trait she passed on to her son, who is equally bad at singing.

Name: Kudo Shinichi Age: 18 Appearance: Black hair, blue eyes, and very handsome. He takes after his mother, Kudo Yukiko. Personality: Rational and calm, but also possesses a hot-blooded side. An absolute fanatic of Sherlock Holmes, becoming visibly excited whenever the subject comes up. Occupation: High school student, Great Detective Likes: Deduction, Holmes, Mori Ran, Soccer Features: Son of Kudo Yusaku and Kudo Yukiko. He is in love with Mori Ran. He learned various skills from his father in Hawaii. He speaks English and Russian at a native level, possesses incredible acting skills, and has immense deductive and physical abilities. IQ 400. He is an elite soccer player but is tone-deaf.

Name: Mori Ran Age: 18 Appearance: Long brown hair and blue eyes. A stunning beauty with a great physique. She has a D-cup bust, a slender waist, and wide hips, giving her beautiful proportions. Her face is so pretty that she was once scouted for a lead acting role, though she declined. Beneath her immense combat power lies a pure and honest side. She is domestic, capable, and devoted solely to Kudo Shinichi. A complete personality that balances gentle kindness with charisma. Personality: Warm-hearted with deep consideration for others. Occupation: High school student Likes: Kudo Shinichi, the color red Features: Daughter of Mori Kogoro and Kisaki Eri (her parents are separated, and she lives with Kogoro). She is in love with Kudo Shinichi. Possesses extraordinary physical strength and athletic reflexes. Captain of the Karate club with terrifyingly high skill levels.