The Japanese voice actor for Ranga in That Time I Got Reincarnated as a Slime is Chikahiro Kobayashi (小林 親弘). In the English dub, Ranga is voiced by Ty Mahany. Kobayashi’s deep and controlled performance helped transform Ranga from a fearsome direwolf leader into one of Rimuru Tempest’s most loyal and dependable companions throughout the series. (behindthevoiceactors.com)
Japanese Voice Actor: Chikahiro Kobayashi

Date of Birth
September 5, 1983. (en.wikipedia.org)
About Chikahiro
Chikahiro Kobayashi is a Japanese voice actor and stage performer known for portraying calm, rugged, and emotionally grounded characters. His role as Ranga in That Time I Got Reincarnated as a Slime became one of his notable fantasy anime performances, particularly because of the quiet loyalty and restrained strength he brought to the character.
Kobayashi is also widely recognized for starring roles in Golden Kamuy, BEASTARS, and Vinland Saga. His naturally deep voice and understated acting style often make him a strong fit for mature or intimidating characters with hidden emotional depth.
Outside of anime, Kobayashi has worked extensively in theater and Japanese dubbing for live-action films and Western productions. (anime-planet.com)
Hometown
Kanagawa Prefecture, Japan. (en.wikipedia.org)
Career Highlights
- Ranga — That Time I Got Reincarnated as a Slime
- Saichi Sugimoto — Golden Kamuy
- Legoshi — BEASTARS
- Askeladd’s forces and supporting roles — Vinland Saga
- Joe Shimamura — Cyborg 009 Call of Justice
- Reinhard — Re:Zero supporting franchise roles
- Additional roles in Great Pretender
- Supporting roles in Spriggan (en.wikipedia.org)
Full Current Filmography
The following list reflects publicly documented anime and game credits from major databases and official publisher materials. It may not be exhaustive.
Television Anime
- That Time I Got Reincarnated as a Slime — Ranga (2018)
- That Time I Got Reincarnated as a Slime Season 2 — Ranga (2021)
- That Time I Got Reincarnated as a Slime Season 3 — Ranga (2024)
- The Slime Diaries — Ranga
- Golden Kamuy — Saichi Sugimoto
- BEASTARS — Legoshi
- Great Pretender — Supporting Roles
- Vinland Saga — Supporting Roles
- Spriggan — Supporting Roles
- BNA: Brand New Animal — Additional Roles
- Fena: Pirate Princess — Supporting Roles
Anime Films
- That Time I Got Reincarnated as a Slime the Movie: Scarlet Bond — Ranga
- Cyborg 009 Call of Justice — Joe Shimamura
- Golden Kamuy franchise promotional projects — Saichi Sugimoto
Video Games
- That Time I Got Reincarnated as a Slime: ISEKAI Memories — Ranga
- Granblue Fantasy — Various Roles
- Arknights — Additional Roles
- Street Fighter 6 — Additional Japanese voices
Critical Reception
Chikahiro Kobayashi’s portrayal of Ranga has been praised for giving the character a dignified and loyal presence despite relatively limited dialogue compared to other major cast members. Fans frequently point to how his calm delivery reinforces Ranga’s role as Rimuru’s trusted shadow and guardian.
His performance also helped maintain Ranga’s intimidating aura while still allowing moments of humor and affection toward Rimuru and Tempest’s residents. Many viewers appreciated that Kobayashi treated Ranga as a serious character rather than comic mascot relief. (cbr.com)
Our Sources
Behind The Voice Actors – Ranga (https://www.behindthevoiceactors.com/characters/That-Time-I-Got-Reincarnated-as-a-Slime/Ranga/)
Wikipedia – Chikahiro Kobayashi (https://en.wikipedia.org/wiki/Chikahiro_Kobayashi)
Anime Planet – Chikahiro Kobayashi Profile (https://www.anime-planet.com/people/chikahiro-kobayashi)
IMDb – That Time I Got Reincarnated as a Slime Full Cast & Crew (https://www.imdb.com/title/tt9054364/fullcredits/)
Social Media
No verified public personal social media accounts were found from public sources.
English Voice Actor: Ty Mahany

Date of Birth
Not publicly documented.
About Ty
Ty Mahany is the English voice actor for Ranga in the English dub of That Time I Got Reincarnated as a Slime. His performance gives Ranga a powerful and disciplined presence that matches the character’s role as Rimuru Tempest’s loyal shadow guardian and one of Tempest’s strongest combatants.
Mahany’s deep vocal delivery helped preserve Ranga’s intimidating aura while still allowing moments of warmth and devotion toward Rimuru and the rest of Tempest. Even though Ranga is often quieter than many members of the main cast, Mahany’s performance ensured the character remained memorable throughout the series.
Outside of Slime, Mahany has worked in anime dubbing, games, and additional voice productions across fantasy and action franchises. (behindthevoiceactors.com)
Hometown
Not publicly documented.
Career Highlights
- Ranga — That Time I Got Reincarnated as a Slime
- Additional Voices — One Piece
- Additional Voices — Black Clover
- Additional Voices — My Hero Academia
- Additional Voices — Fire Force
- Supporting Roles — various Crunchyroll and Funimation productions (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
- That Time I Got Reincarnated as a Slime — Ranga (2018)
- That Time I Got Reincarnated as a Slime Season 2 — Ranga (2021)
- That Time I Got Reincarnated as a Slime Season 3 — Ranga (2024)
- The Slime Diaries — Ranga
- One Piece — Additional Voices
- Black Clover — Additional Voices
- My Hero Academia — Additional Voices
- Fire Force — Additional Voices
- Fairy Tail — Additional Voices
Anime Films
- That Time I Got Reincarnated as a Slime the Movie: Scarlet Bond — Ranga
Video Games
- That Time I Got Reincarnated as a Slime: ISEKAI Memories — Ranga
- Additional voice roles in anime-related game localizations
Critical Reception
Ty Mahany’s portrayal of Ranga has been appreciated by English dub viewers for maintaining the character’s intimidating strength without losing his loyal and protective personality. Fans often highlight how his restrained delivery fits Ranga’s role as a calm but deadly companion rather than an overly expressive mascot character.
His performance during battle scenes and moments involving Rimuru in particular helped reinforce Ranga’s unwavering loyalty and dependable presence within Tempest’s growing army. (behindthevoiceactors.com)
Our Sources
Behind The Voice Actors – Ranga (https://www.behindthevoiceactors.com/characters/That-Time-I-Got-Reincarnated-as-a-Slime/Ranga/)
Behind The Voice Actors – Ty Mahany (https://www.behindthevoiceactors.com/Ty-Mahany/)
IMDb – That Time I Got Reincarnated as a Slime Full Cast & Crew (https://www.imdb.com/title/tt9054364/fullcredits/)
Crunchyroll – That Time I Got Reincarnated as a Slime Dub Information (https://www.crunchyroll.com/series/GYZJ43JMR/that-time-i-got-reincarnated-as-a-slime)
Social Media
No verified public social media accounts or official personal profiles were found from public sources.
