Voice Actor for Shion in That Time I Got Reincarnated as a Slime? Mao Ichimichi & Michelle Rojas -

The Japanese voice actor for Shion in That Time I Got Reincarnated as a Slime is Mao Ichimichi (市道真央), professionally known as M·A·O. In the English dub, Shion is voiced by Michelle Rojas. M·A·O’s energetic and expressive performance helped establish Shion as one of the series’ most beloved characters, balancing intimidating combat strength with exaggerated comedy and fierce loyalty to Rimuru Tempest. (behindthevoiceactors.com)

Japanese Voice Actor: M·A·O

Date of Birth

February 1, 1992. (en.wikipedia.org)

About Mao

M·A·O is a Japanese actress, voice actress, and former tokusatsu performer known for her remarkable vocal versatility across anime, games, and live-action productions. Her portrayal of Shion in That Time I Got Reincarnated as a Slime became one of her most recognizable anime roles thanks to her ability to alternate between comedic chaos, emotional sincerity, and intimidating battlefield intensity.

Before her voice acting career fully took off, she gained national attention playing Luka Millfy / Gokai Yellow in Kaizoku Sentai Gokaiger. She later became one of the busiest voice actresses in the industry, appearing in fantasy, comedy, sports, and idol anime alike.

Outside of Slime, M·A·O is known for major roles in Fire Force, Princess Principal, The Idolmaster Million Live!, Dorohedoro, and Arifureta. (anime-planet.com)

Hometown

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

Career Highlights

Shion — That Time I Got Reincarnated as a Slime
Iris — Fire Force
Pecorine — Princess Connect! Re:Dive
Fana — Black Clover
Narberal Gamma — Overlord
Aladdin — Magi: Adventure of Sinbad
Beniyo Yonomori — Engaged to the Unidentified
Shion — The Slime Diaries
Renge — Arifureta (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 — Shion (2018)
That Time I Got Reincarnated as a Slime Season 2 — Shion (2021)
That Time I Got Reincarnated as a Slime Season 3 — Shion (2024)
The Slime Diaries — Shion
Fire Force — Iris
Overlord — Narberal Gamma
Princess Connect! Re:Dive — Pecorine
Dorohedoro — Nikaido
Black Clover — Fana
Arifureta — Renge Hiyama
Princess Principal — Princess
Dr. Stone — Homura Momiji
Zombieland Saga — Additional Roles
The Idolmaster Million Live! — Misaki Aoba

Anime Films

That Time I Got Reincarnated as a Slime the Movie: Scarlet Bond — Shion
Princess Principal Crown Handler — Princess
Fire Force franchise promotional films and specials

Video Games

Princess Connect! Re:Dive — Pecorine
Azur Lane — Various Roles
Granblue Fantasy — Various Roles
That Time I Got Reincarnated as a Slime: ISEKAI Memories — Shion
Overlord: Mass for the Dead — Narberal Gamma

Critical Reception

M·A·O’s portrayal of Shion has been praised for giving the character both overwhelming energy and emotional warmth. Fans frequently highlight her comedic timing during Shion’s infamous cooking scenes, while also praising her more dramatic performances during the emotionally heavier arcs of Season 2.

Her chemistry with Miho Okasaki’s Rimuru and the wider Tempest cast became one of the major reasons Shion developed such a strong fan following. Critics and viewers alike often point to M·A·O’s performance as a key reason the character avoids becoming a one-note comic relief archetype. (cbr.com)

Our Sources

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

Wikipedia – Mao Ichimichi / M·A·O (https://en.wikipedia.org/wiki/Mao_Ichimichi)

Anime Planet – M·A·O Profile (https://www.anime-planet.com/people/mao-ichimichi)

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

Social Media

Instagram: https://www.instagram.com/mao_ichimichi/

Official Agency Profile: https://yellow-cab.jp/talent/mao-ichimichi/

English Voice Actor: Michelle Rojas

Date of Birth

Not publicly documented.

About Michelle

Michelle Rojas is the English voice actor for Shion in the English dub of That Time I Got Reincarnated as a Slime. Her performance became one of the standout elements of the dub thanks to the way she balanced Shion’s intimidating strength, over-the-top comedy, and heartfelt devotion to Rimuru.

Rojas gave Shion a confident and energetic personality that fit the character’s explosive emotional range. Whether portraying Shion’s terrifying battle presence, comedic jealousy, or emotional vulnerability, her performance helped make the character especially memorable for English-speaking audiences.

Outside of Slime, Rojas is known for major anime roles in My Hero Academia, Date A Live, One Piece, Black Clover, and Akame ga Kill!. She has also worked extensively as an ADR director and scriptwriter within the anime dubbing industry. (behindthevoiceactors.com)

Hometown

Houston, Texas, United States. (funimation.com)

Career Highlights

Shion — That Time I Got Reincarnated as a Slime
Tohka Yatogami — selected franchise productions and additional dubbing work
Mina Ashido — My Hero Academia
Chi Chi — Dragon Ball Super (selected dubbing appearances)
Shion — The Slime Diaries
Additional Voices — One Piece
Additional Voices — Black Clover
Additional Voices — Fire Force
Additional Roles — Akame ga Kill! (imdb.com)

Full Current Filmography

The following list reflects publicly documented anime, 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 — Shion (2018)
That Time I Got Reincarnated as a Slime Season 2 — Shion (2021)
That Time I Got Reincarnated as a Slime Season 3 — Shion (2024)
The Slime Diaries — Shion
My Hero Academia — Mina Ashido
Black Clover — Additional Voices
One Piece — Additional Voices
Fire Force — Additional Voices
Akame ga Kill! — Supporting Roles
Date A Live — Additional Dub Roles
Fairy Tail — Additional Voices

Anime Films

That Time I Got Reincarnated as a Slime the Movie: Scarlet Bond — Shion
My Hero Academia films — Mina Ashido
Dragon Ball Super franchise dubbing appearances

Video Games

That Time I Got Reincarnated as a Slime: ISEKAI Memories — Shion
SMITE — Various Voice Roles
Paladins — Various Roles
Borderlands 3 — Additional Voices

Critical Reception

Michelle Rojas’ portrayal of Shion has been praised for embracing both the comedic and emotional extremes of the character. Fans frequently highlight her delivery during Shion’s exaggerated cooking scenes and jealous outbursts, while also noting the emotional sincerity she brought to the darker moments of Season 2.

Her chemistry with Brittney Karbowski’s Rimuru is often cited as one of the highlights of the English dub, particularly during scenes that shift rapidly between humor, loyalty, and emotional drama. Many dub viewers consider Shion one of Rojas’ most memorable fantasy anime roles. (behindthevoiceactors.com)