The Japanese voice actor for Demiurge in Overlord is Masayuki Katō (加藤 将之). In the English dub, the character is voiced by Jeff Johnson. Katō’s performance gave Demiurge his distinctive blend of absolute politeness, terrifying intelligence, and hidden cruelty, helping establish the character as one of the most feared members of Nazarick. (behindthevoiceactors.com)
Japanese Voice Actor: Masayuki Katō
Date of Birth
September 23, 1972 (myanimelist.net)
About Masayuki
Masayuki Katō is a veteran Japanese voice actor known for portraying composed, intelligent, and often morally complex characters. His role as Demiurge in Overlord became one of his most internationally recognized performances thanks to the character’s calm menace and manipulative charisma.
Katō’s delivery as Demiurge is especially praised for its restrained intensity. Rather than relying on exaggerated villainy, he portrays Demiurge with unwavering confidence and eerie politeness, which makes the character’s brutality even more unsettling.
Outside of Overlord, Katō has worked extensively in anime, games, and dubbing projects, with notable appearances in Bleach, JoJo’s Bizarre Adventure, Fairy Tail, and Code Geass. (anime-planet.com)
Hometown
Tokyo, Japan. (myanimelist.net)
Career Highlights
- Demiurge — Overlord
- Don Kanonji — Bleach
- George Joestar II — JoJo’s Bizarre Adventure
- Gustav Moreau — Code Geass
- Wally Buchanan — Fairy Tail
- Additional roles in One Piece
- Additional roles in Kingdom
- Additional roles in Mobile Suit Gundam productions (behindthevoiceactors.com)
Full Current Filmography
The following list reflects publicly documented anime and game credits from major databases and publisher materials. It may not be exhaustive.
Television Anime
- Overlord — Demiurge (2015)
- Overlord II — Demiurge (2018)
- Overlord III — Demiurge (2018)
- Overlord IV — Demiurge (2022)
- Isekai Quartet — Demiurge
- Bleach — Don Kanonji
- JoJo’s Bizarre Adventure — George Joestar II
- Code Geass — Gustav Moreau
- Fairy Tail — Wally Buchanan
- Kingdom — Supporting Roles
- One Piece — Supporting Roles
- Naruto Shippuden — Additional Voices
- Mobile Suit Gundam AGE — Additional Roles
Anime Films
- Overlord: The Undead King — Demiurge
- Overlord: The Dark Hero — Demiurge
- Overlord: The Sacred Kingdom — Demiurge
- Bleach feature films — Don Kanonji
- JoJo’s Bizarre Adventure franchise appearances
Video Games
- Overlord: Escape from Nazarick — Demiurge
- Overlord: Mass for the Dead — Demiurge
- Super Robot Wars series — Additional Roles
- Granblue Fantasy — Various Roles
Critical Reception
Masayuki Katō’s portrayal of Demiurge is frequently praised for its subtle intimidation and calculated delivery. Fans often note that Demiurge rarely raises his voice, yet still feels deeply threatening in nearly every appearance.
His performance became particularly popular during scenes where Demiurge interprets Ainz’s accidental remarks as masterful long-term strategy, creating some of the series’ most memorable dark comedy moments. Katō’s controlled, intellectual approach helped make Demiurge one of Overlord’s standout antagonistic personalities despite technically serving the protagonist side. (cbr.com)
Our Sources
Behind The Voice Actors – Demiurge (Overlord) (https://www.behindthevoiceactors.com/characters/Overlord/Demiurge/)
Behind The Voice Actors – Masayuki Katō (https://www.behindthevoiceactors.com/Masayuki-Kato/)
MyAnimeList – Masayuki Katō (https://myanimelist.net/people/1507/Masayuki_Katou)
Anime Planet – Masayuki Katō Profile (https://www.anime-planet.com/people/masayuki-katou)
IMDb – Overlord Full Cast & Crew (https://www.imdb.com/title/tt4869896/fullcredits/)
Social Media
No verified public social media accounts or official personal profiles were found from public sources.
English Voice Actor: Jeff Johnson
Date of Birth
Not publicly documented.
About Jeff
Jeff Johnson is the English voice actor for Demiurge in the English dub of Overlord. His performance is known for emphasizing Demiurge’s calm intelligence, manipulative personality, and unwavering loyalty to Ainz Ooal Gown.
Johnson’s delivery gives Demiurge an especially refined and calculating presence in the dub. Rather than portraying the character as openly theatrical, he leans into a composed and analytical tone that makes Demiurge’s cruelty feel even more unsettling. This approach helped establish Demiurge as one of the standout supporting characters in the English adaptation.
Outside of Overlord, Johnson has worked across anime dubbing, video games, and commercial voice acting projects, with credits spanning action, fantasy, and comedy productions. (behindthevoiceactors.com)
Hometown
Not publicly documented.
Career Highlights
- Demiurge — Overlord
- Additional Voices — One Piece
- Additional Voices — My Hero Academia
- Additional Voices — Black Clover
- Additional Voices — Dragon Ball Super
- Various Roles — Borderlands 3
- Various Roles — SMITE (imdb.com)
Full Current Filmography
The following list reflects publicly documented dubbing and game credits from major databases and official publisher materials. It may not be exhaustive.
Television Anime
- Overlord — Demiurge (2015)
- Overlord II — Demiurge (2018)
- Overlord III — Demiurge (2018)
- Overlord IV — Demiurge (2022)
- Isekai Quartet — Demiurge
- One Piece — Additional Voices
- My Hero Academia — Additional Voices
- Black Clover — Additional Voices
- Dragon Ball Super — Additional Voices
- Fire Force — Additional Voices
Anime Films
- Overlord: The Undead King — Demiurge
- Overlord: The Dark Hero — Demiurge
- Overlord: The Sacred Kingdom — Demiurge
Video Games
- Overlord: Mass for the Dead — Demiurge
- Borderlands 3 — Additional Voices
- SMITE — Various Voice Roles
- Paladins — Various Roles
Critical Reception
Jeff Johnson’s portrayal of Demiurge has been praised by dub viewers for preserving the character’s intellectual menace and eerie calmness. Fans often highlight how naturally he delivers Demiurge’s elaborate explanations and strategic conversations without making the character sound exaggerated.
His performance also complements Chris Guerrero’s Ainz particularly well, especially during scenes where Demiurge interprets ordinary remarks as evidence of impossible genius. The resulting dynamic became one of the defining comedic and dramatic elements of the English dub. (behindthevoiceactors.com)
Our Sources
Behind The Voice Actors – Demiurge (Overlord) (https://www.behindthevoiceactors.com/characters/Overlord/Demiurge/)
Behind The Voice Actors – Jeff Johnson (https://www.behindthevoiceactors.com/Jeff-Johnson/)
IMDb – Overlord Full Cast & Crew (https://www.imdb.com/title/tt4869896/fullcredits/)
Crunchyroll – Overlord Dub Information (https://www.crunchyroll.com/series/G69PZ5PDY/overlord)
Social Media
No verified public social media accounts or official personal profiles were found from public sources.
