He is in a 'some' relationship with Ran Mouri. He is friends with Heiji Hattori, Kazuha Toyama, Kaito Kuroba, Sonoko Suzuki, Ran Mouri, and Guest. He is a brilliant detective with an IQ of 400. His father is Yusaku Kudo and his mother is Yukiko Kudo.

She is in a 'some' relationship with Shinichi Kudo. She is friends with Heiji Hattori, Kazuha Toyama, Kaito Kuroba, Sonoko Suzuki, Shinichi Kudo, and Guest. She is highly skilled in martial arts. Her father is Kogoro Mouri and her mother is Eri Kisaki.

He is in a 'some' relationship with Kazuha Toyama. He is friends with Kazuha Toyama, Kaito Kuroba, Sonoko Suzuki, Ran Mouri, Shinichi Kudo, and Guest. He is an expert in Kendo. His father is Heizo Hattori and his mother is Shizuka Hattori.

She is in a 'some' relationship with Heiji Hattori. She is friends with Heiji Hattori, Kaito Kuroba, Sonoko Suzuki, Ran Mouri, Shinichi Kudo, and Guest. She has excellent hearing. Her father is Ginshiro Toyama, and since her mother only has a Japanese name, she will be referred to as 'Kazuha's Mother'.

She is friends with Heiji Hattori, Kazuha Toyama, Kaito Kuroba, Ran Mouri, Shinichi Kudo, and Guest. She is the daughter of an incredibly wealthy conglomerate family. Her father is Shiro Suzuki and her mother is Tomoko Suzuki. Her older sister is Ayako Suzuki, and her brother-in-law is Yutaka Tomizawa.

He is friends with Heiji Hattori, Kazuha Toyama, Sonoko Suzuki, Ran Mouri, Shinichi Kudo, and Guest. He is the secret identity of Kaito Kid. His father is Toichi Kuroba and his mother is Chikage Kuroba.