Voice Actor for Milim Nava in That Time I Got Reincarnated as a Slime? Rina Hidaka & Kristen McGuire -

The Japanese voice actor for Milim Nava in That Time I Got Reincarnated as a Slime is Rina Hidaka (日高里菜). In the English dub, the character is voiced by Kristen McGuire. Hidaka’s energetic and chaotic performance became a defining part of Milim’s popularity, perfectly capturing the Demon Lord’s childlike personality, explosive power, and unpredictable emotional swings. (behindthevoiceactors.com)

Japanese Voice Actor: Rina Hidaka

Date of Birth

June 15, 1994. (en.wikipedia.org)

About Rina

Rina Hidaka is a Japanese voice actress known for portraying energetic, mischievous, and emotionally expressive characters across anime and video games. Her role as Milim Nava in That Time I Got Reincarnated as a Slime became one of her most internationally recognized fantasy performances thanks to the way she balanced Milim’s playful innocence with overwhelming destructive power.

Hidaka began voice acting at a young age and steadily built a major career through roles in fantasy, romance, action, and game adaptations. Her naturally youthful vocal tone made her especially effective at portraying characters who appear cheerful on the surface but possess hidden emotional depth.

Outside of Slime, Hidaka is widely known for roles in Sword Art Online, The Rising of the Shield Hero, Rozen Maiden, and To Love-Ru Darkness. (anime-planet.com)

Hometown

Chiba Prefecture, Japan. (en.wikipedia.org)

Career Highlights

Milim Nava — That Time I Got Reincarnated as a Slime
Silica — Sword Art Online
Filo — The Rising of the Shield Hero
Last Order — A Certain Magical Index
Mina Tepes — Dance in the Vampire Bund
Nemesis — To Love-Ru Darkness
Tomoe Koga — Rascal Does Not Dream of Bunny Girl Senpai
Claire Kagenou — The Eminence in Shadow
Milim Nava — The Slime Diaries (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 — Milim Nava (2018)
That Time I Got Reincarnated as a Slime Season 2 — Milim Nava (2021)
That Time I Got Reincarnated as a Slime Season 3 — Milim Nava (2024)
The Slime Diaries — Milim Nava
Sword Art Online — Silica
The Rising of the Shield Hero — Filo
To Love-Ru Darkness — Nemesis
Rascal Does Not Dream of Bunny Girl Senpai — Tomoe Koga
The Eminence in Shadow — Claire Kagenou
Rozen Maiden — Nori Sakurada
A Certain Magical Index — Last Order
Combatants Will Be Dispatched! — Grimm
The Misfit of Demon King Academy — Misa Ilioroagu

Anime Films

That Time I Got Reincarnated as a Slime the Movie: Scarlet Bond — Milim Nava
Sword Art Online Progressive films — Silica
Rascal Does Not Dream film series — Tomoe Koga

Video Games

That Time I Got Reincarnated as a Slime: ISEKAI Memories — Milim Nava
Genshin Impact — Additional Japanese voice roles
Granblue Fantasy — Various Roles
Blue Archive — Supporting Roles
Princess Connect! Re:Dive — Additional Roles

Critical Reception

Rina Hidaka’s portrayal of Milim Nava has been praised for combining adorable comedic energy with moments of genuine menace and emotional vulnerability. Fans frequently highlight her ability to make Milim feel both ancient and childlike at the same time, which became one of the character’s defining traits.

Her performance during Milim’s emotional story arcs and combat-heavy scenes received particular praise, especially because Hidaka could rapidly transition between playful comedy and overwhelming destructive intensity. Many viewers consider Milim one of the standout characters of the franchise largely because of Hidaka’s vocal performance. (cbr.com)

Our Sources

Behind The Voice Actors – Milim Nava (https://www.behindthevoiceactors.com/characters/That-Time-I-Got-Reincarnated-as-a-Slime/Milim-Nava/)

Wikipedia – Rina Hidaka (https://en.wikipedia.org/wiki/Rina_Hidaka)

Anime Planet – Rina Hidaka Profile (https://www.anime-planet.com/people/rina-hidaka)

IMDb – That Time I Got Reincarnated as a Slime Full Cast & Crew (https://www.imdb.com/title/tt9054364/fullcredits/)

Social Media

X / Twitter: https://x.com/rinahidaka__

Agency Profile: https://www.osawa-inc.co.jp/women/hidakarina/

Instagram: No verified public Instagram account was found from public sources.

English Voice Actor: Kristen McGuire

Date of Birth

Not publicly documented.

About Kristen

Kristen McGuire is the English voice actor for Milim Nava in the English dub of That Time I Got Reincarnated as a Slime. Her performance became especially popular among dub fans for capturing Milim’s hyperactive personality, chaotic humor, and overwhelming confidence while still giving emotional weight to the character’s more serious moments.

McGuire’s energetic delivery helped make Milim one of the most memorable characters in the English adaptation. She effectively balances Milim’s childish enthusiasm with the terrifying presence expected from one of the world’s oldest and strongest Demon Lords.

Outside of Slime, McGuire is known for voice acting, ADR writing, and directing work across many major anime productions, including Dr. Stone, My Hero Academia, Fire Force, and One Piece. (behindthevoiceactors.com)

Hometown

Not publicly documented.

Career Highlights

Milim Nava — That Time I Got Reincarnated as a Slime
Senku’s assistant roles and ADR work — Dr. Stone
Tatami Nakagame — My Hero Academia
Additional Voices — One Piece
Additional Voices — Black Clover
Additional Voices — Fire Force
ADR Scriptwriter — multiple Crunchyroll and Funimation productions
Voice Director — selected anime dubbing projects (imdb.com)

Full Current Filmography

The following list reflects publicly documented anime, dubbing, and production credits from major databases and official publisher materials. It may not be exhaustive.

Television Anime

That Time I Got Reincarnated as a Slime — Milim Nava (2018)
That Time I Got Reincarnated as a Slime Season 2 — Milim Nava (2021)
That Time I Got Reincarnated as a Slime Season 3 — Milim Nava (2024)
The Slime Diaries — Milim Nava
My Hero Academia — Tatami Nakagame
One Piece — Additional Voices
Black Clover — Additional Voices
Fire Force — Additional Voices
Dr. Stone — Additional Voices and ADR work
Fairy Tail — Additional Voices
Toilet-Bound Hanako-kun — Additional Voices

Anime Films

That Time I Got Reincarnated as a Slime the Movie: Scarlet Bond — Milim Nava
My Hero Academia films — Additional Voices
Various Crunchyroll/Funimation dubbing productions as ADR staff

Video Games

That Time I Got Reincarnated as a Slime: ISEKAI Memories — Milim Nava
SMITE — Various Voice Roles
Paladins — Various Roles
Additional localization and dubbing work for anime-based games

Critical Reception

Kristen McGuire’s portrayal of Milim has been praised for fully embracing the character’s chaotic energy without making her feel one-dimensional. Fans frequently highlight her comedic timing during Milim’s exaggerated reactions and boastful speeches, while also appreciating the emotional sincerity she brings during more dramatic arcs.

Her chemistry with Brittney Karbowski’s Rimuru is often mentioned as one of the highlights of the English dub, especially during scenes that rapidly shift between comedy, friendship, and large-scale conflict. Many viewers consider McGuire’s Milim one of the standout performances in the series’ English adaptation. (behindthevoiceactors.com)