Kappei Yamaguchi

Kappei Yamaguchi Profile Photo

Characters played by Kappei Yamaguchi

Shinichi Kudo — Detective Conan (1996)

Teenage detective who is poisoned with APTX 4869 by the Black Organization and shrinks into a child.

Ranma Saotome ♂ — Ranma ½ (1989)

Martial artist cursed to turn into a girl when splashed with cold water.

InuYasha — InuYasha (2000)

Half-demon warrior seeking the Shikon Jewel to become fully human.

Fu — Super Dragon Ball Heroes (2018)

Mysterious antagonist who creates the Prison Planet, kidnaps Future Trunks, and forces warriors to collect Special Dragon Balls. Conducts universe-wide space-time experiments before his eventual defeat.

Professor Daitokuji / Lyman Banner — Yu-Gi-Oh! GX (2004)

An alchemist who infiltrated Duel Academy by posing as the Slifer Red dorm advisor, Professor Banner. He operated under the alias Amnael as a member of the Shadow Riders organization, which aimed to revive world-destroying Sacred Beasts.

Tombo — Kiki's Delivery Service (1989)

Tombo is a boy Kiki meets after her arrival in Koriko, helping her escape when a policeman approaches her. He invites her to his aviation club and shows her the bicycle-based flying machine he is building. During the airship accident, Kiki rescues him, strengthening their relationship.

Sai Saici — Mobile Fighter G Gundam (1994)

Sai Saici is Neo China’s Gundam representative and an early rival of Domon Kasshu. Their first tournament battle ends in a draw and establishes mutual respect. Master Asia later controls Sai Saici through Devil Gundam cells, while the Shuffle Alliance rescues him and grants him a crest as a successor.

Kaito Kid / Shinichi Kudou — Detective Conan: The Million-Dollar Pentagram (2024)

Phantom thief who occasionally impersonates Shinichi Kudo.

Teddie — PERSONA 4 the Animation (2011)

A curious bear-like creature living inside the TV World. He assists Yu and his friends in navigating the dangerous realm, joins their investigation team, and helps them rescue victims and fight against Shadows.

Shinichi Kudo — Detective Conan: Quarter of Silence (2011)

Ran's longtime love interest and Conan's true identity. Referenced frequently in flashbacks and conversations. His past actions, such as convicting a hit-and-run councilman, directly trigger plot events. Occasionally appears in disguise or voice impressions to interact with Ran.

Inorin (voice) — Gintama the Movie 2026: Yoshiwara in Flames (2026)

Voice actor for the Yato clan warrior.

Shinichi Kudo (voice) / Kaito Kuroba (voice) — Detective Conan: The Private Eyes' Requiem (2006)

A combined voice credit for Shinichi Kudo and Kaitō Kid, who can appear in each other's guise.

Career Overview

Kappei Yamaguchi has 272 screen credits in a career dating back to 1975. Their work spans 31 cinematic universes — most prominently Detective Conan Collection with 30 titles. Signature works include One Piece, Detective Conan, Ranma ½. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.

Personal Facts

Known For
Acting
Gender
male
Known Credits
272
Birth Date
1965-05-23
Birth Place
Fukuoka, Fukuoka, Japan

Known For

Associated Universes

Universe traveler — spans 31 universes

Frequent Collaborators

Credits

Content sources

Related entry on Wikidata (Q355173), public domain (CC0).