Soma Saito

Tokyo, Japan
By the TVCeleb Editorial Team Last updated How we research & score

Biography

Soma Saito is a Japanese voice actor (seiyu), singer, and writer born in Tokyo, Japan, and affiliated with the talent agency Across Entertainment. He rose to prominence through a string of leading and high-profile supporting roles in popular anime during the 2010s, earning a reputation for a soft, expressive voice well suited to introspective and complex characters.

In Moriarty the Patriot he voices the protagonist William James Moriarty, the idealistic mastermind known as the Lord of Crime, a performance widely praised for capturing both the character's gentleness and his steely resolve. Beyond voice acting, Saito is an accomplished solo musician who writes his own lyrics and music, releasing albums and performing concerts in addition to his screen work.

Known For

William James Moriarty

Moriarty the Patriot 2020–2021

Other Notable Roles

  • Mikaela Hyakuya in Seraph of the End
  • Yoshiki Izana in Aku no Hana (The Flowers of Evil)
  • Tamaki Amajiki in My Hero Academia
  • Rai Kishibe in Babylon

Career Overview & Television Legacy

Soma Saito's television career is defined by a standout performance that has left a lasting mark on the medium. Most notably, William James Moriarty in Moriarty the Patriot (2020–2021) — William James Moriarty is the heart and engine of the series: a red-haired prodigy of breathtaking intellect whose gentle exterior conceals an unshakable resolve. Born a commoner and orphaned young, he and his brother Louis were taken into the aristocratic Moriarty household, where William witnessed firsthand the casual cruelty the nobility inflicts on those beneath them..

Beyond the roles featured on TVCeleb, Soma Saito has built an impressive body of work across film and television. Notable credits include Mikaela Hyakuya in Seraph of the End, Yoshiki Izana in Aku no Hana (The Flowers of Evil), Tamaki Amajiki in My Hero Academia, Rai Kishibe in Babylon. This diverse range of projects demonstrates Soma Saito's versatility as a performer and commitment to challenging material across multiple genres and formats.

Born in Tokyo, Japan, Soma Saito has established themselves as one of the most respected performers working in television today. Known for work spanning seiyu, voice actor, Soma Saito's career continues to evolve with each new project, consistently attracting both critical praise and devoted fan followings.

Acting Style & Approach

Soma Saito's approach to acting is characterized by a commitment to deeply inhabiting each character. In the role of William James Moriarty, Soma Saito demonstrates remarkable range and an ability to find emotional truth in every scene. Working across anime, mystery, drama, thriller genres, Soma Saito brings both technical precision and raw emotional honesty to each performance.

Audiences and critics have noted Soma Saito's talent for seiyu, voice actor performances. This versatility has made Soma Saito a sought-after talent for projects that demand both emotional depth and on-screen charisma. Whether carrying a scene through quiet intensity or commanding attention in high-stakes dramatic moments, Soma Saito consistently delivers performances that resonate with viewers long after the credits roll.

Fan Community & Cultural Impact

Soma Saito has cultivated a passionate and dedicated fan following through a standout performance in Moriarty the Patriot. The anime, mystery, drama community has embraced Soma Saito's work, generating fan art, character analyses, and active discussion across social media platforms. The character of William James Moriarty in particular has inspired extensive fan engagement, with viewers drawn to the complexity and emotional depth that Soma Saito brings to the role.

As part of the cast of Moriarty the Patriot, Soma Saito has contributed to some of the most culturally significant television of the modern era. These series have each made their mark on the television landscape, and Soma Saito's performances have been integral to their success and lasting cultural relevance. The actor's ability to create characters that resonate deeply with audiences ensures that their contribution to television history will be remembered and celebrated for years to come.

Why Fans Love Soma Saito

Soma Saito's appeal to television fans goes beyond individual performances. Across the role in Moriarty the Patriot, Soma Saito has demonstrated an ability to create characters that audiences connect with on a deeply personal level. The character of William James Moriarty carries a Fan Heat Index score of 0/100, reflecting the passionate fan community that has formed around Soma Saito's portrayal.

TVCeleb's comprehensive profiles of Soma Saito's characters provide the deepest analysis available online, including detailed arc breakdowns, key episode guides, memorable quotes, and fan ecosystem mapping that connects viewers with communities of like-minded fans. Explore the character pages linked above for the full TVCeleb experience.

Explore More on TVCeleb

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Browse our collection by genre to find shows in your preferred category, by network to see what's available on your streaming platform, by decade to explore different eras of television history, or by curated lists that group characters by archetype and achievement. Each show page features expanded synopses, production details, and video content, while character pages include detailed arc analysis, key episodes, quotes, trivia, and fan ecosystem mapping.

Every character on TVCeleb is scored using our proprietary Fan Heat Index, which measures engagement, social activity, meme velocity, fan art density, and fandom longevity on a scale of 0 to 100. This data-driven approach provides objective insight into which characters have inspired the most passionate and active fan communities. Use the search page to find any character, show, or actor instantly, or start browsing from our homepage to discover what's trending in television fandom today.

? Frequently Asked Questions

William James Moriarty is voiced by Japanese voice actor (seiyu) Soma Saito in the original Japanese-language version of Moriarty the Patriot.

Soma Saito is best known for portraying William James Moriarty in Moriarty the Patriot. Beyond these roles, Soma Saito has also appeared in Mikaela Hyakuya in Seraph of the End, Yoshiki Izana in Aku no Hana (The Flowers of Evil), Tamaki Amajiki in My Hero Academia.

Soma Saito was born in Tokyo, Japan. Soma Saito pursued a career in acting that would eventually lead to prominent television roles, including William James Moriarty in Moriarty the Patriot. Their journey from Tokyo, Japan to television stardom reflects a dedicated commitment to the performing arts.

Soma Saito plays William James Moriarty in Moriarty the Patriot, which airs on Tokyo MX and streams on Funimation. Moriarty the Patriot is a Anime/Mystery/Drama/Thriller series that ran from 2020–2021. Soma Saito's portrayal of William James Moriarty has been widely praised by fans and critics, contributing to the show's cultural impact and devoted fanbase.

Soma Saito is a professional actor known for William James Moriarty in Moriarty the Patriot. Their filmography extends well beyond television to include Mikaela Hyakuya in Seraph of the End, Yoshiki Izana in Aku no Hana (The Flowers of Evil), Tamaki Amajiki in My Hero Academia, Rai Kishibe in Babylon. Soma Saito continues to be an active and sought-after performer in the entertainment industry, with each new project further cementing their reputation for compelling and authentic character work.