In Dr. Stone, Gen Asagiri is voiced by Kengo Kawanishi in the Japanese version and Brandon McInnis in the English dub. Kawanishi delivers a sly, playful, and psychologically layered performance that perfectly matches Gen’s identity as a mentalist and manipulator.
Kengo Kawanishi (Japanese Voice Actor)
Date of Birth
February 18, 1985
About Kengo
Kengo Kawanishi is a Japanese voice actor known for his sharp vocal precision and ability to portray cunning, intelligent, or emotionally complex characters. Affiliated with Mausu Promotion, Kawanishi has steadily built a reputation for roles that require subtle emotional shifts and calculated delivery. His performance as Gen Asagiri stands out for its theatrical flair combined with underlying sincerity, capturing both Gen’s trickster personality and his deeper loyalty.
Hometown
Osaka Prefecture, Japan
Career Highlights
Kengo Kawanishi has voiced a variety of notable characters across anime:
- Muichiro Tokito (Demon Slayer: Kimetsu no Yaiba) – The Mist Hashira with a detached demeanor
- Rei Kiriyama (March Comes in Like a Lion) – A quiet, introspective shogi prodigy
- Gen Asagiri (Dr. Stone) – A manipulative yet ultimately loyal mentalist
- Junpei Yoshino (Jujutsu Kaisen) – A troubled student with emotional depth
- Tengen Uzui (young) (Demon Slayer) – Early-life portrayal of the Sound Hashira
His versatility allows him to seamlessly shift between calm introspection and expressive theatricality.
Full Current Filmography
The following is a structured list of documented credits from reputable sources and may not be exhaustive.
Anime (Selected, Chronological)
- 2014 – Your Lie in April – Additional voices
- 2016–2018 – March Comes in Like a Lion – Rei Kiriyama
- 2017 – Katsugeki/Touken Ranbu – Horikawa Kunihiro
- 2018 – Golden Kamuy – Second Lieutenant Koito
- 2019–present – Dr. Stone – Gen Asagiri
- 2019 – Demon Slayer: Kimetsu no Yaiba – Muichiro Tokito
- 2020 – Jujutsu Kaisen – Junpei Yoshino
- 2021 – Odd Taxi – Yamamoto
- 2023 – Demon Slayer: Swordsmith Village Arc – Muichiro Tokito
Video Games (Selected)
- Touken Ranbu – Horikawa Kunihiro
- Granblue Fantasy – Various roles
- Fire Emblem Heroes – Multiple characters
Other Work
- Radio appearances and seiyuu variety programming
- Drama CDs and character songs
Critical Reception
Kengo Kawanishi is widely respected for his subtle acting and emotional authenticity. Critics often highlight his role as Rei Kiriyama as a benchmark for nuanced performance, while his portrayal of Gen Asagiri is praised for balancing humor with psychological depth.
- Anime News Network Encyclopedia profile (https://www.animenewsnetwork.com/encyclopedia/people.php?id=104102)
- Behind The Voice Actors profile (https://www.behindthevoiceactors.com/Kengo-Kawanishi/)
His performance as Gen is frequently noted for elevating the character beyond comic relief, giving him a believable strategic mind and emotional core.
Brandon McInnis (English Voice Actor)
Date of Birth
August 6, 1985
About Brandon
Brandon McInnis is an American voice actor known for his smooth, expressive delivery and ability to portray clever, sarcastic, and emotionally layered characters. Working extensively with Crunchyroll (formerly Funimation), McInnis has developed a strong presence in modern anime dubs. His performance as Gen Asagiri in Dr. Stone highlights his talent for blending playful deception with genuine warmth, capturing Gen’s identity as both a trickster and a trusted ally.
Hometown
Not publicly documented
Career Highlights
Brandon McInnis has voiced a wide range of notable characters:
- Gen Asagiri (Dr. Stone) – A cunning mentalist with theatrical flair
- Sir Nighteye (My Hero Academia) – A serious and analytical pro hero
- Finral Roulacase (Black Clover) – A comedic yet loyal spatial mage
- Nacht Faust (Black Clover) – A darker, more stoic contrast to Finral
- Ryota Watari (Your Lie in April) – A cheerful and supportive friend
- Miles Edgeworth (Ace Attorney anime) – A sharp and composed prosecutor
His ability to balance humor, intelligence, and emotional nuance makes him particularly well-suited for characters like Gen.
Full Current Filmography
The following reflects documented credits from major dubbing productions and may not be exhaustive.
Anime (Selected, Chronological)
- 2014–2015 – Your Lie in April – Ryota Watari
- 2016 – Ace Attorney – Miles Edgeworth
- 2017–2021 – Black Clover – Finral Roulacase / Nacht Faust
- 2018–2020 – My Hero Academia – Sir Nighteye
- 2019–present – Dr. Stone – Gen Asagiri
- 2020 – Fire Force – Karim Flam
- 2021 – SK8 the Infinity – Joe (Kojiro Nanjo)
- 2022 – The Case Study of Vanitas – Jean-Jacques Chastel
- 2023 – Sugar Apple Fairy Tale – Jonas Anders
Video Games (Selected)
- Smite – Various character voices
- Paladins – Additional voices
Other Work
- ADR and dubbing collaborations with Crunchyroll
- Convention appearances and fan events
Critical Reception
Brandon McInnis is praised for his versatility and ability to convey both intelligence and charm. His portrayal of Gen Asagiri is frequently highlighted by fans as a standout dub performance due to its balance of humor and sincerity.
- Behind The Voice Actors profile (https://www.behindthevoiceactors.com/Brandon-McInnis/)
- Anime News Network Encyclopedia (https://www.animenewsnetwork.com/encyclopedia/people.php?id=121124)
Critics and audiences often note that his performance enhances Gen’s charisma while maintaining the character’s strategic and psychological depth.
Social Media
X: @BranMci (https://x.com/BranMci)
