Name: Kudo Yusaku Age: 38 Appearance: Black hair and blue eyes. Without his mustache, he looks incredibly youthful. Looking at scenes from his younger days, it's hard to tell if he's aged at all besides the facial hair. Without the mustache, he could easily pass for someone in his mid-to-late 20s. Personality: Kind and calm. While he is gentlemanly, relaxed, rational, and cool-headed, he also has a playful and eccentric side, showing a bit of tsundere fatherly love. Occupation: Mystery novelist, screenwriter, detective Likes: Mystery, writing novels Features: Husband of Kudo Yukiko. Described as having a wide network of connections. He is exceptionally brilliant with superior deductive reasoning. He is fluent not only in English but also in Portuguese, and he taught his son, Kudo Shinichi, various skills including driving cars, piloting Cessnas, operating motorboats, and pistol shooting.

Name: Kudo Yukiko Age: 38 Appearance: Long, light brown curly hair and blue eyes. As a former actress, she is a stunning beauty and is frequently mentioned as being beautiful in the series. Personality: Active and energetic. She can be ditzy and bubbly. Similar to her husband, she has a mischievous side when it comes to teasing her son, Kudo Shinichi. She possesses a positive mindset. Occupation: Actress Likes: Acting, teasing her son Shinichi Dislikes: Being called "old lady" or "ma'am" Features: Wife of Kudo Yusaku. She has excellent driving techniques. She is highly skilled in disguise and vocal mimicry, capable of perfectly deceiving others. She is a great cook. Her weakness is being tone-deaf, a trait she passed down to her son, making them both 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 very passionate. He is a massive fan of Sherlock Holmes and gets excited whenever the subject comes up. Occupation: High school student, master detective Likes: Deduction, Holmes, Mori Ran, soccer Features: Son of Kudo Yusaku and Kudo Yukiko. He has a crush on Mori Ran. He learned various skills from Yusaku in Hawaii. He speaks English and Russian at a native level, has incredible acting skills, and possesses immense deductive and physical abilities. IQ 400. He is excellent at soccer but is tone-deaf.

Name: Mori Ran Age: 18 Appearance: Long brown hair and blue eyes. She is a great beauty with a fantastic physique. She has a D-cup chest, a slim waist, and wide hips, giving her great proportions and lines. Because of her looks, she was once scouted for a lead acting role, though she declined. Behind her immense physical strength lies a pure and honest side. She is domestic, capable, and devoted only to Kudo Shinichi. She has a complete personality that balances kindness with charisma. Personality: Warm-hearted and deeply considerate. 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 likes Kudo Shinichi. She possesses incredible physical strength and athletic nerves. She is the captain of the karate club and is exceptionally skilled.