In Assassination Classroom, Koro-sensei is voiced by Jun Fukuyama in the Japanese version and Sonny Strait in the English dub. Fukuyama delivers an iconic performance that blends absurd comedy, warmth, and emotional depth—perfectly embodying the character’s eccentric yet profoundly human nature.
Jun Fukuyama (Japanese Voice Actor)
Date of Birth
November 26, 1978
About Jun
Jun Fukuyama is one of Japan’s most celebrated voice actors, known for his incredible range—from comedic exaggeration to deeply emotional and philosophical roles. Affiliated with AXL ONE, Fukuyama gained widespread recognition for his ability to portray intelligent, charismatic, and often morally complex characters. His performance as Koro-sensei is widely regarded as one of his most defining roles, showcasing his ability to seamlessly shift between humor and heartfelt sincerity.
Hometown
Hiroshima Prefecture, Japan
Career Highlights
Jun Fukuyama has an extensive portfolio of major anime roles:
- Lelouch Lamperouge (Code Geass) – A brilliant and morally complex anti-hero
- Koro-sensei (Assassination Classroom) – A comedic yet deeply inspiring teacher
- Kazuma Satou (KonoSuba) – A sarcastic and comedic isekai protagonist
- King (The Seven Deadly Sins) – A gentle yet powerful Fairy King
- Ichimatsu (Osomatsu-san) – A deadpan, cynical brother
- Joker/Ren Amamiya (Persona 5 anime) – A calm and strategic leader
His role as Koro-sensei is especially praised for balancing over-the-top delivery with genuine emotional resonance.
Full Current Filmography
The following is a structured list of documented credits from reputable sources and may not be exhaustive.
Anime (Selected, Chronological)
- 2006–2008 – Code Geass – Lelouch Lamperouge
- 2010–present – Durarara!! – Masaomi Kida
- 2012–present – Magi: The Labyrinth of Magic – Kassim
- 2014–2016 – Assassination Classroom – Koro-sensei
- 2015–present – Osomatsu-san – Ichimatsu
- 2016–present – The Seven Deadly Sins – King
- 2016–present – KonoSuba – Kazuma Satou
- 2018 – Persona 5: The Animation – Ren Amamiya
- 2020–present – Heaven Official’s Blessing (JP dub) – Xie Lian
Video Games (Selected)
- Persona 5 – Ren Amamiya (Joker)
- Granblue Fantasy – Various roles
- Fire Emblem Heroes – Multiple characters
Other Work
- Music career as a solo artist and character singer
- Radio hosting and live stage performances
Critical Reception
Jun Fukuyama is widely acclaimed for his expressive versatility and commanding vocal presence. His portrayal of Koro-sensei is often cited as one of the most memorable performances in modern anime.
- Anime News Network Encyclopedia profile (https://www.animenewsnetwork.com/encyclopedia/people.php?id=27854)
- Behind The Voice Actors profile (https://www.behindthevoiceactors.com/Jun-Fukuyama/)
Critics frequently highlight how he balances absurd humor with emotional gravitas, particularly in the later arcs of Assassination Classroom.
Social Media
X: @black_fukuyama (https://x.com/black_fukuyama)
Sonny Strait (English Voice Actor)
Date of Birth
June 28, 1960
About Sonny
Sonny Strait is a veteran American voice actor, ADR director, and scriptwriter with decades of experience in the anime dubbing industry. Known for his expressive, often eccentric performances, Strait has voiced a wide range of memorable characters across major franchises. As Koro-sensei in Assassination Classroom, he delivers a dynamic performance that captures both the character’s comedic absurdity and emotional depth, balancing humor with heartfelt mentorship.
Hometown
Not publicly documented
Career Highlights
Sonny Strait is best known for several iconic roles in English-dubbed anime:
- Krillin (Dragon Ball franchise) – One of the longest-running and most recognizable anime characters in English dubs
- Usopp (One Piece) – The comedic yet brave sniper of the Straw Hat Pirates
- Koro-sensei (Assassination Classroom) – A bizarre yet inspiring teacher
- Present Mic (My Hero Academia) – A loud and energetic pro hero
- Maes Hughes (Fullmetal Alchemist) – A beloved and emotional supporting character
His portrayal of Koro-sensei stands out for its theatrical energy and ability to shift into sincere emotional moments when needed.
Full Current Filmography
The following reflects documented credits from major dubbing productions and may not be exhaustive.
Anime (Selected, Chronological)
- 1999–present – Dragon Ball franchise – Krillin
- 2007–present – One Piece – Usopp
- 2009–2010 – Fullmetal Alchemist: Brotherhood – Maes Hughes
- 2014–present – My Hero Academia – Present Mic
- 2015–2016 – Assassination Classroom – Koro-sensei
- 2016 – Space Dandy – Narrator (select episodes)
- 2018 – Dragon Ball Super: Broly (film) – Krillin
- 2020 – Fire Force – Additional voices
- 2022 – Dragon Ball Super: Super Hero (film) – Krillin
Video Games (Selected)
- Dragon Ball video game series – Krillin
- One Piece games – Usopp
- Borderlands 3 – Additional voices
Other Work
- ADR direction and scriptwriting for Funimation/Crunchyroll titles
- Comic book writing and illustration
- Convention panels and industry appearances
Critical Reception
Sonny Strait is widely respected for his longevity and impact in the English dubbing industry. His performances are often praised for their personality and consistency across long-running franchises.
- Behind The Voice Actors profile (https://www.behindthevoiceactors.com/Sonny-Strait/)
- Anime News Network Encyclopedia (https://www.animenewsnetwork.com/encyclopedia/people.php?id=1956)
His performance as Koro-sensei is frequently highlighted by fans for capturing both the character’s chaotic humor and emotional core, particularly in pivotal story moments.
Social Media
X: @sonnystrait (https://x.com/sonnystrait)
