Momoyo Koyama Biography

Momoyo Koyama (小山 百代, Hepburn: Koyama Momoyo, born November 30, 1995) is a Japanese actress, voice actress and singer from Sapporo, Hokkaido, who is affiliated with Stardust Promotion.

Momoyo Koyama is popularly known for playing Sailor Mercury in two stage play adaptations of Sailor Moon in 2014 and 2015, and for playing Karen Aijō, the protagonist of the multimedia franchise Revue Starlight. She is also a member of the musical group SoundOrion.

Basic Information

Name:Momoyo Koyama
Hepburn:Koyama Momoyo
Japanese:小山 百代
Date Of Birth:30 November 1995
Age:26 Years
Place Of Birth:Sapporo, Hokkaido, Japan
Zodiac Sign:Sagittarius
Occupation:Actress, singer
Years Active:2007 – Present
Agent:Stardust Promotion
Height: (5 ft 1 in) 155 cm
Net Worth:$1 Million – $5 Million

Early Life

Momoyo Koyama was born in Hokkaido on November 30, 1995. Her mother is a nursery teacher. From an early age, she had an interest in acting, particularly after becoming familiar with stage play adaptations of the manga series Sailor Moon; it would become her dream to perform in a play of the series.


Koyama became affiliated with the Sapporo-based acting office Egg in 2007, and she began to perform in several theatrical plays in Hokkaido. In 2014, she was cast as Sailor Mercury in the stage musical Sailor Moon: Petite Étrangère, and she would reprise the role the following year in the stage musical Sailor Moon: Un Nouveau Voyage.

At some point in her career, as she was unsure of what her future held, Momoyo Koyama considered retiring from acting and pursuing a different career. Following a recommendation from the director of the Sailor Moon stage plays, who was surprised to hear that she was not a voice actress, she decided to try out voice acting. After passing an audition held by the talent agency Stardust Promotion, she became affiliated with them in 2017 and moved to Tokyo.

In 2017, Koyama was cast as Karen Aijō, the protagonist of the multimedia franchise Revue Starlight. Her participation in the series began when she played Karen in the franchise’s stage play, which was initially performed at the AiiA 2.5 Theater in Tokyo; she would then reprise the role in the 2018 anime television series. To promote the series, she appeared at panels at C3 AFA Singapore, and CharaExpo USA in 2018.

Momoyo Koyama has also been cast as the character Haruka Shima in the multimedia franchise Onsen Musume. In 2019, she and two other voice actresses from Hokkaido, Miharu Hanai and Reia Hayasaka, started hosting a radio program on STV Radio.

Personal Life

On April 23, 2020, it was announced Koyama will take a hiatus in May due to vocal cord surgery.

Video Games

  • 2018 Shōjo Kageki Revue Starlight: Re LIVE as Karen Aijō
  • 2018 Onsen Musume as Haruka Shima


  • 2022 Teppen—!!!!!!!!!!!!!!! as Chihori Hokuto Drama
  • 2020 Love Live! Nijigasaki High School Idol Club | episodes 1-2, 8, 12 as club president club president
  • 2020 Interspecies Reviewers | Elma
  • 2020 Rebirth as Kei Tōdō
  • 2018 Revue Starlight as Karen Aijō
  • 2017 NTR: Netsuzou Trap Ending theme | episodes 4–6 As part of SoundOrion

Stage Plays

  • 2018 Shōjo Kageki Revue Starlight: The LIVE #1 revival as Karen Aijō
  • 2017 Shōjo Kageki Revue Starlight: The LIVE #1 as Karen Aijō
  • 2015 Pretty Girl Sailor Moon: Un Nouveau Voyage as Ami Mizuno/Sailor Mercury
  • 2014 Pretty Girl Sailor Moon: Petite Étrangère as Ami Mizuno/Sailor Mercury
  • 2013 KobuTa Run De Boo

Net Worth

Momoya Koyama has a net worth that is estimated to be $1 -$5 Million

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