Iruka Umino, Naruto Uzumaki’s first mentor and one of the most important father figures in the Naruto franchise, is voiced by Toshihiko Seki in the original Japanese version and Quinton Flynn in the English dub. Their performances helped make Iruka one of the series’ most beloved supporting characters, known for his kindness, wisdom, and unwavering belief in Naruto’s potential.

JAPANESE VOICE ACTOR (TOSHIHIKO SEKI)

Date of Birth

June 11, 1962.

About Toshihiko

Toshihiko Seki (関 俊彦) is a veteran Japanese voice actor, narrator, and singer with a career spanning several decades. He is widely recognized as one of the anime industry’s most accomplished performers, known for voicing both heroic protagonists and memorable villains. Among anime fans, he is especially known for portraying Iruka Umino in Naruto, Duo Maxwell in Mobile Suit Gundam Wing, Genjo Sanzo in Saiyuki, and Muzan Kibutsuji in Demon Slayer: Kimetsu no Yaiba.

As Iruka, Seki delivered a warm and compassionate performance that perfectly reflected the character’s role as Naruto’s earliest supporter and mentor. His portrayal remained consistent throughout Naruto, Naruto Shippuden, films, specials, and video games.

Hometown

Sendai, Miyagi Prefecture, Japan.

Career Highlights

Some of Toshihiko Seki’s most notable roles include:

  • Iruka Umino — Naruto
  • Muzan Kibutsuji — Demon Slayer: Kimetsu no Yaiba
  • Duo Maxwell — Mobile Suit Gundam Wing
  • Genjo Sanzo — Saiyuki
  • Kaien Shiba — Bleach
  • Rau Le Creuset — Mobile Suit Gundam SEED
  • Momotaros — Kamen Rider Den-O
  • Kyosuke Irie — Higurashi When They Cry

Full Current Filmography

The following list reflects documented major credits from publicly available sources and may not be exhaustive.

Television Anime

  • Naruto — Iruka Umino
  • Naruto Shippuden — Iruka Umino
  • Demon Slayer: Kimetsu no Yaiba — Muzan Kibutsuji
  • Mobile Suit Gundam Wing — Duo Maxwell
  • Saiyuki — Genjo Sanzo
  • Bleach — Kaien Shiba
  • Mobile Suit Gundam SEED — Rau Le Creuset
  • Higurashi When They Cry — Kyosuke Irie
  • Toaru Majutsu no Index — Aleister Crowley
  • Pluto — Pluto

Anime Films

  • The Last: Naruto the Movie — Iruka Umino
  • Various Naruto theatrical films — Iruka Umino
  • Numerous Kamen Rider Den-O films as Momotaros.

Video Games

  • Naruto Ultimate Ninja Storm series — Iruka Umino
  • Naruto x Boruto: Ultimate Ninja Storm Connections — Iruka Umino
  • Various Naruto franchise titles
  • Multiple Kamen Rider and anime-based game projects.

Critical Reception

Toshihiko Seki’s portrayal of Iruka is widely praised for bringing warmth and sincerity to the character. Fans frequently point to Iruka’s emotional scenes with Naruto as some of the most heartfelt moments in the series, with Seki’s performance playing a major role in their impact.

Our Sources

Social Media

No verified public social media accounts for Toshihiko Seki were found from reputable public sources.

ENGLISH VOICE ACTOR (QUINTON FLYNN)

Date of Birth

October 10, 1964. (en.wikipedia.org)

About Quinton

Quinton Flynn is an American voice actor, comedian, writer, and musician known for his extensive work in anime, animation, and video games. Since the 1990s, he has voiced numerous iconic characters and has become one of the most recognizable performers in the voice acting industry.

In the English dub of Naruto, Naruto Shippuden, and various Naruto films and games, Flynn voices Iruka Umino. His performance captures Iruka’s kindness, patience, and fatherly nature, helping establish the character as one of Naruto’s most important mentors and emotional anchors throughout the series. (behindthevoiceactors.com)

Hometown

Cleveland, Ohio, United States. (en.wikipedia.org)

Career Highlights

Some of Quinton Flynn’s most notable roles include:

  • Iruka Umino — Naruto
  • Raiden — Metal Gear series
  • Axel / Lea — Kingdom Hearts series
  • Kon — Bleach
  • Silver the Hedgehog — Sonic the Hedgehog franchise
  • Jhin — League of Legends
  • Johnny Storm / Human Torch — Marvel video games
  • Kael’thas Sunstrider — World of Warcraft franchise (en.wikipedia.org)

Full Current Filmography

The following list reflects documented major credits from publicly available sources and may not be exhaustive.

Anime Series

  • Naruto — Iruka Umino
  • Naruto Shippuden — Iruka Umino
  • Boruto: Naruto Next Generations — Iruka Umino
  • Bleach — Kon
  • Zatch Bell! — Ponygon
  • Bobobo-bo Bo-bobo — Dengakuman
  • Blue Dragon — Jiro
  • Mon Colle Knights — Count Collection

Animated Series

  • Winx Club — Various Roles
  • The Avengers: Earth’s Mightiest Heroes — Various Roles
  • Robot Chicken — Various Roles

Video Games

  • Metal Gear Solid 2: Sons of Liberty — Raiden
  • Metal Gear Solid 4: Guns of the Patriots — Raiden
  • Metal Gear Rising: Revengeance — Raiden
  • Kingdom Hearts II — Axel
  • Kingdom Hearts III — Lea / Axel
  • League of Legends — Jhin
  • Sonic the Hedgehog series — Silver the Hedgehog
  • World of Warcraft — Kael’thas Sunstrider
  • Naruto: Ultimate Ninja Storm series — Iruka Umino
  • Naruto x Boruto: Ultimate Ninja Storm Connections — Iruka Umino

Critical Reception

Quinton Flynn’s portrayal of Iruka is widely praised for bringing warmth and sincerity to the character. Fans frequently cite Iruka’s emotional scenes with Naruto—particularly those involving Naruto’s childhood struggles and achievements—as some of the most touching moments in the English dub. Flynn’s performance helped reinforce Iruka’s role as the first person to truly acknowledge Naruto and believe in him. (behindthevoiceactors.com)

Our Sources

Social Media

Published by Limarc Ambalina

Limarc Ambalina is the founder of Japan Bound, a website covering all things Japan — from travel and culture to anime, manga, and pop culture. He is also the Director of Content at ISNation and the former VP of Editorial at HackerNoon. Based in Japan, he has been writing about Japanese life and entertainment since 2019, growing the site to over 2.4 million views.

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