Rintaro Okabe, the eccentric self-proclaimed “mad scientist” at the center of Steins;Gate, is voiced in Japanese by Mamoru Miyano and in the English dub by J. Michael Tatum. Miyano’s dramatic and emotionally layered performance became one of the defining elements of the series, helping turn Okabe into one of anime’s most memorable protagonists.

Japanese Voice Actor: Mamoru Miyano

Date of Birth

June 8, 1983

About Mamoru

Mamoru Miyano is one of Japan’s most recognizable voice actors and singers, celebrated for balancing theatrical intensity with emotional vulnerability. His portrayal of Rintaro Okabe in Steins;Gate is widely considered one of the standout performances of modern sci-fi anime, especially during the series’ darker emotional arcs.

Outside of Steins;Gate, Miyano is known for voicing major anime protagonists and antiheroes across multiple genres. His energetic delivery, dramatic timing, and ability to shift seamlessly between comedy and emotional drama have made him a fan favorite for nearly two decades.

Hometown

Saitama Prefecture, Japan

Career Highlights

  • Rintaro Okabe — Steins;Gate
  • Light Yagami — Death Note
  • Osamu Dazai — Bungo Stray Dogs
  • Rin Matsuoka — Free!
  • Riku — Kingdom Hearts
  • Setsuna F. Seiei — Mobile Suit Gundam 00
  • Death the Kid — Soul Eater
  • Chrollo Lucilfer — Hunter × Hunter
  • Atsumu Miya — Haikyu!!
  • Benimaru Shinmon — Fire Force

Miyano has also built a successful music career, releasing albums and performing anime theme songs in addition to his extensive voice acting work.

Full Current Filmography

The following list reflects documented and widely verified voice acting credits from publicly available sources and is not guaranteed to be exhaustive.

Anime

  • Steins;Gate — Rintaro Okabe
  • Steins;Gate 0 — Rintaro Okabe
  • Death Note — Light Yagami
  • Bungo Stray Dogs — Osamu Dazai
  • Free! — Rin Matsuoka
  • Soul Eater — Death the Kid
  • Mobile Suit Gundam 00 — Setsuna F. Seiei
  • Hunter × Hunter (2011) — Chrollo Lucilfer
  • Ouran High School Host Club — Tamaki Suoh
  • Durarara!! — Masaomi Kida
  • Ajin: Demi-Human — Kei Nagai
  • Fire Force — Benimaru Shinmon
  • Zombie Land Saga — Kotaro Tatsumi
  • Pluto — Epsilon
  • Oshi no Ko — Hikaru Kamiki
  • Haikyu!! — Atsumu Miya
  • Tokyo Ghoul — Tsukiyama Shu
  • Wolf’s Rain — Kiba
  • Pokémon the Series: Black & White — Cilan
  • Blue Lock — Michael Kaiser

Video Games

  • Steins;Gate — Rintaro Okabe
  • Steins;Gate Elite — Rintaro Okabe
  • Kingdom Hearts series — Riku
  • Persona 5 — Ryuji Sakamoto
  • Tales of Vesperia — Flynn Scifo
  • Inazuma Eleven series — Various roles
  • Hunter × Hunter: Nen × Impact — Chrollo Lucilfer

Critical Reception

Mamoru Miyano’s performance as Okabe is frequently praised for its emotional range. Critics and fans alike have highlighted how convincingly he transitions between Okabe’s exaggerated “Hououin Kyouma” persona and the character’s increasingly fragile emotional state as the story progresses. Steins;Gate itself received widespread acclaim for its character writing and emotional storytelling, with Okabe’s performance often singled out as a major reason for the anime’s success.

Miyano has also received multiple industry awards throughout his career, including Seiyu Awards and recognition from the Tokyo Anime Awards.

Our Sources

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English Voice Actor: J. Michael Tatum

Aug 8, 2025 Animate! Orlando

Date of Birth

May 25, 1976 (imdb.com)

About Michael

J. Michael Tatum is the English voice actor behind Rintaro Okabe in the English dub of Steins;Gate. His performance became one of the most celebrated English anime dub performances of the 2010s, especially for capturing Okabe’s theatrical “mad scientist” personality while still delivering the emotional gravity required during the series’ darker moments. (behindthevoiceactors.com)

Known for his sharp comedic timing and highly expressive narration style, Tatum has built a reputation as one of the most distinctive voices in English-language anime dubbing. In addition to acting, he has also worked as an ADR scriptwriter for numerous anime productions. (animecons.com)

Hometown

McKinney, Texas, United States (imdb.com)

Career Highlights

  • Rintaro Okabe — Steins;Gate
  • Sebastian Michaelis — Black Butler
  • Erwin Smith — Attack on Titan
  • Kyoya Ootori — Ouran High School Host Club
  • Tenya Iida — My Hero Academia
  • Tomoe — Kamisama Kiss
  • Kraft Lawrence — Spice and Wolf
  • Sir Integra Hellsing — Hellsing Ultimate
  • Scar — Fullmetal Alchemist: Brotherhood
  • France — Hetalia (behindthevoiceactors.com)

Tatum is also highly respected in the dubbing industry for script adaptation work, helping localize anime dialogue into natural-sounding English while preserving character personality and tone. (animenewsnetwork.com)

Full Current Filmography

The following list reflects documented and publicly verifiable credits from major databases and official releases and may not be exhaustive.

Anime

  • Steins;Gate — Rintaro Okabe
  • Steins;Gate 0 — Rintaro Okabe
  • Black Butler — Sebastian Michaelis
  • Attack on Titan — Erwin Smith
  • My Hero Academia — Tenya Iida
  • Ouran High School Host Club — Kyoya Ootori
  • Spice and Wolf — Kraft Lawrence
  • Hellsing Ultimate — Sir Integra Hellsing
  • Fullmetal Alchemist: Brotherhood — Scar
  • Fairy Tail — Lahar
  • Soul Eater — Justin Law
  • D.Gray-man — Komui Lee
  • Tokyo Ghoul — Shu Tsukiyama
  • Kamisama Kiss — Tomoe
  • Hetalia: Axis Powers — France
  • Moriarty the Patriot — Charles Augustus Milverton
  • Baccano! — Gustav St. Germain
  • Seraph of the End — Ferid Bathory
  • Fire Force — Rekka Hoshimiya
  • One Piece — Caesar Clown (imdb.com)

Video Games

  • Steins;Gate — Rintaro Okabe
  • Borderlands 3 — Sir Hammerlock
  • SMITE — Various voices
  • Dragon Ball Xenoverse — Additional voices
  • Paladins — Various voices (behindthevoiceactors.com)

ADR Writing and Adaptation

  • Black Butler
  • Spice and Wolf
  • D.Gray-man
  • Ghost Hunt
  • Baka and Test
  • Fullmetal Alchemist: Brotherhood (animenewsnetwork.com)

Critical Reception

J. Michael Tatum’s portrayal of Okabe is widely regarded as one of the strongest English anime dub performances of its era. Critics and fans frequently praise how naturally he handled Okabe’s rapid shifts between over-the-top theatrical comedy and emotionally devastating drama. His chemistry with the wider Steins;Gate English cast also helped the dub gain a strong reputation among anime viewers. (reddit.com, behindthevoiceactors.com)

Tatum’s work across anime dubbing has earned consistent praise for sophisticated line delivery and memorable character interpretation, particularly in intellectual or charismatic roles. (animenewsnetwork.com)

Our Sources

Published by mayciballesteros03

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