Armin Arlert, the intelligent and compassionate strategist of Attack on Titan (Shingeki no Kyojin), is voiced by Marina Inoue in the Japanese version and Josh Grelle in the English dub. Inoue’s performance captures Armin’s emotional sensitivity, inner strength, and remarkable growth throughout the series.
Marina Inoue (Japanese Voice Actor)

Date of Birth
January 20, 1985
About Marina
Marina Inoue is a Japanese voice actress and singer affiliated with Aoni Production. She is known for her versatile vocal range, often portraying young male characters (a practice known as “cross-casting”) as well as strong female leads.
Her portrayal of Armin Arlert is one of her most celebrated roles. Inoue skillfully conveys Armin’s initial timidity and self-doubt while gradually evolving his voice into one that reflects confidence, resolve, and leadership. Her emotionally raw delivery during key moments—especially Armin’s internal conflicts and sacrifices—has been widely praised by fans and critics alike.
Inoue’s background in music also complements her voice acting, giving her performances a natural rhythm and emotional nuance.
Hometown
Tokyo, Japan
Career Highlights
Marina Inoue has voiced a wide range of notable characters:
- Armin Arlert – Attack on Titan
- Yoko Littner – Gurren Lagann
- Momo Yaoyorozu – My Hero Academia
- Armin Arlert (child/younger tone continuity) – Attack on Titan (various arcs)
- Sodachi Oikura – Monogatari Series
- Pandora – Re:Zero − Starting Life in Another World
- Tōka Yatogami – Date A Live
Her ability to transition between youthful male roles and confident female characters showcases her range and adaptability.
Full Current Filmography
The following list reflects documented voice acting credits from publicly available sources and may not be exhaustive.
Television Anime
- 2007 – Tengen Toppa Gurren Lagann (Yoko Littner)
- 2013–2023 – Attack on Titan (Armin Arlert)
- 2013–present – Date A Live (Tōka Yatogami)
- 2016 – Re:Zero − Starting Life in Another World (Pandora)
- 2016–present – My Hero Academia (Momo Yaoyorozu)
- 2015 – Monogatari Series Second Season (Sodachi Oikura arc appearances)
Anime Films
- 2009 – Gurren Lagann The Movie (Yoko Littner)
- 2014–2023 – Attack on Titan compilation and finale films (Armin Arlert)
Video Games
- Attack on Titan game series (Armin Arlert)
- Fire Emblem Heroes (various characters)
- Granblue Fantasy (various roles)
Critical Reception
Marina Inoue is widely praised for her emotional expressiveness and versatility, particularly in roles that require significant character development.
- Anime News Network reviews often highlight Inoue’s performance as Armin as a key emotional anchor in Attack on Titan (https://www.animenewsnetwork.com/)
- Fan and critic discussions on platforms like MyAnimeList frequently commend her ability to portray Armin’s growth from a fearful child into a decisive leader (https://myanimelist.net/)
Her work as Armin is frequently cited as one of the most compelling examples of character evolution in anime voice acting.
Social Media
X: @Mari_navi (https://x.com/Mari_navi)
Josh Grelle (English Voice Actor)

Date of Birth
November 2, 1985
About Josh
Josh Grelle is an American voice actor and ADR scriptwriter known for a wide range of performances in anime dubs. Over the course of their career, Grelle has become especially recognized for portraying intelligent, emotionally complex characters who undergo significant development.
As Armin Arlert in Attack on Titan, Grelle delivers a deeply nuanced performance that mirrors the character’s transformation from a timid, self-doubting youth into a confident and strategic leader. Their vocal work captures Armin’s emotional vulnerability early in the series while gradually introducing a stronger, more resolute tone as the story progresses. This evolution is a key aspect of Armin’s character arc and has been widely appreciated by fans.
In addition to voice acting, Grelle has contributed as a scriptwriter for English dubs, helping shape dialogue adaptation for anime audiences.
Hometown
Clifton, Texas, USA
Career Highlights
Josh Grelle has voiced numerous notable characters in anime:
- Armin Arlert – Attack on Titan
- Yukiteru Amano – Future Diary (Mirai Nikki)
- Kenichi Shirahama – Kenichi: The Mightiest Disciple
- Fuutarou Uesugi – The Quintessential Quintuplets
- Seishiro Nagi – Blue Lock
- Byakuya Togami – Danganronpa: The Animation
- Tokoyami Fumikage (various appearances) – My Hero Academia (additional/related casting contexts)
These roles highlight Grelle’s strength in portraying thoughtful, introspective, and evolving characters.
Full Current Filmography
The following list reflects documented voice acting credits from publicly available sources and may not be exhaustive.
Anime (English Dub)
- 2008 – Kenichi: The Mightiest Disciple (Kenichi Shirahama)
- 2011 – Future Diary (Mirai Nikki) (Yukiteru Amano)
- 2013–2023 – Attack on Titan (Armin Arlert)
- 2013 – Danganronpa: The Animation (Byakuya Togami)
- 2019–2021 – The Quintessential Quintuplets (Fuutarou Uesugi)
- 2022–present – Blue Lock (Seishiro Nagi)
Video Games
- Attack on Titan game series (Armin Arlert)
- Danganronpa series (Byakuya Togami)
- Fire Emblem Heroes (various characters)
ADR Writing (Selected)
- Scriptwriter – Various Funimation/Crunchyroll anime dubs (specific episode credits vary by production)
Critical Reception
Josh Grelle is widely respected for their emotionally authentic and character-driven performances. Their portrayal of Armin Arlert has been particularly praised for capturing the character’s psychological growth and internal संघर्ष.
- Anime News Network reviews often highlight the English dub cast of Attack on Titan, noting Grelle’s performance as a strong emotional counterpart to Eren and Mikasa (https://www.animenewsnetwork.com/)
- Fan and critic discussions on platforms like MyAnimeList frequently commend their ability to convey Armin’s vulnerability and intelligence in equal measure (https://myanimelist.net/)
Grelle’s work as Armin is often considered one of the standout performances in the English dub of Attack on Titan, especially during key turning points in the series.
Social Media
X: @JoshGrelle (https://x.com/JoshGrelle)
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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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