Tsukasa Shishio, the powerful and ideologically driven antagonist-turned-ally in Dr. Stone, is voiced by Yūichi Nakamura in the Japanese version and Ian Sinclair in the English dub. Nakamura’s deep, composed delivery perfectly captures Tsukasa’s strength, conviction, and underlying humanity.
Yūichi Nakamura (Japanese Voice Actor)

Date of Birth
February 20, 1980
About Yūichi
Yūichi Nakamura is one of Japan’s most prominent voice actors, known for his smooth, deep voice and commanding presence. With a career spanning decades, he has portrayed a wide range of characters—from calm strategists to powerful fighters—often bringing a natural charisma to his roles.
His portrayal of Tsukasa Shishio stands out for its quiet intensity, balancing physical dominance with philosophical depth.
Hometown
Kagawa Prefecture, Japan
Career Highlights
- Tsukasa Shishio – Dr. Stone
- Gojo Satoru – Jujutsu Kaisen
- Tetsurō Kuroo – Haikyuu!!
- Gray Fullbuster – Fairy Tail
- Bruno Bucciarati – JoJo’s Bizarre Adventure: Golden Wind
- Hawks (Keigo Takami) – My Hero Academia
Nakamura is especially recognized for voicing cool, confident characters with strong leadership qualities.
Full Current Filmography
The following list reflects documented credits from reputable anime databases and official sources; it may not be exhaustive.
Anime Television
- 2009–2019 – Fairy Tail (Gray Fullbuster)
- 2014–2020 – Haikyuu!! (Tetsurō Kuroo)
- 2018–2019 – JoJo’s Bizarre Adventure: Golden Wind (Bruno Bucciarati)
- 2019–present – Dr. Stone (Tsukasa Shishio)
- 2020–present – Jujutsu Kaisen (Satoru Gojo)
- 2020–present – My Hero Academia (Hawks)
Anime Films
- 2017 – Fairy Tail: Dragon Cry (Gray Fullbuster)
- 2021 – Jujutsu Kaisen 0 (Satoru Gojo)
- 2023 – Dr. Stone: Ryusui (Tsukasa Shishio – TV special format)
Video Games
- Final Fantasy XIII series (Cid Raines)
- Granblue Fantasy (multiple roles)
- Fire Emblem Heroes (various characters)
Critical Reception
Yūichi Nakamura’s performance as Tsukasa Shishio has been widely praised for its calm authority and emotional restraint. Critics often highlight how his delivery reinforces Tsukasa’s philosophical stance without making him feel one-dimensional.
- Anime News Network review of Dr. Stone:
Anime News Network (https://www.animenewsnetwork.com/) - Crunchyroll feature on standout voice acting:
Crunchyroll article (https://www.crunchyroll.com/anime-feature)
His portrayal is frequently described as “charismatic” and “intimidating yet thoughtful,” helping elevate Tsukasa beyond a typical antagonist.
Social Media
X: @nakamuraFF11 (https://x.com/nakamuraFF11)
Ian Sinclair (English Voice Actor)

Date of Birth
March 2, 1984
About Ian
Ian Sinclair is a well-known American voice actor, ADR director, and scriptwriter recognized for his powerful voice and dynamic range. He frequently portrays confident, eccentric, or authoritative characters, often bringing a mix of intensity and charisma to his roles.
As Tsukasa Shishio in Dr. Stone, Sinclair delivers a commanding performance that captures the character’s physical dominance and ideological conviction. His deep, controlled tone reinforces Tsukasa’s presence as both a formidable antagonist and a complex thinker.
Hometown
Not publicly documented
Career Highlights
- Tsukasa Shishio – Dr. Stone
- Brook – One Piece (English dub)
- Whis – Dragon Ball Super
- Dandy – Space Dandy (lead role)
- Magna Swing – Black Clover
- Ronaldo – The Vampire Dies in No Time
Sinclair is particularly known for his versatility, seamlessly shifting between comedic eccentricity and serious, commanding roles.
Full Current Filmography
The following list reflects documented credits from official dubbing records and industry databases; it may not be exhaustive.
Anime Television
- 2014 – Space Dandy (Dandy)
- 2014–present – Dragon Ball Super (Whis)
- 2007–present – One Piece (Brook)
- 2017–present – Black Clover (Magna Swing)
- 2021 – The Vampire Dies in No Time (Ronaldo)
- 2019–present – Dr. Stone (Tsukasa Shishio)
Anime Films
- 2018 – Dragon Ball Super: Broly (Whis)
- 2022 – Dragon Ball Super: Super Hero (Whis)
- 2023 – Dr. Stone: Ryusui (Tsukasa Shishio – special/dub release)
Video Games
- Dragon Ball game series (Whis)
- One Piece game adaptations (Brook)
- Smite (voice roles)
- Additional roles across anime-based and original game titles
Critical Reception
Ian Sinclair’s performance as Tsukasa Shishio has been praised for its commanding presence and clarity. Critics and fans often highlight how his delivery enhances Tsukasa’s philosophical dialogue while maintaining a strong, intimidating tone.
- Anime News Network coverage of Dr. Stone dub:
Anime News Network (https://www.animenewsnetwork.com/) - Crunchyroll features on English dub performances:
Crunchyroll article (https://www.crunchyroll.com/anime-feature)
His portrayal is often described as “powerful” and “charismatic,” successfully capturing the complexity of Tsukasa’s character in the English adaptation.
