Riko Koike (Japanese: 小池 理子, Hepburn: Koike Riko, born 1 January 1991) is a Japanese voice actress from Fukui, Fukui Prefecture, affiliated with Millennium Pro.^[1] Inspired by the 1994 film Mobile Fighter G Gundam, her voice acting career began in 2015 when she voiced Paru in Chain Chronicle, and she has also starred as Caracal in Kemono Friends 2 and Myamu in Waccha PriMagi!.

Riko Koike, a native of Fukui, Fukui Prefecture, was born on 1 January 1991.^[2][3] Inspired to go into voice acting by the 1994 film Mobile Fighter G Gundam,^[4] She was educated at Tokyo Woman's Christian University and Arcadia Voice Actor Academy.^[5][6]

In May 2015, Koike passed the second screening of the Chain Chronicle Character Voice Audition.^[7] She won the Chain Chronicle Developer Award at the final public audition held on Nippon Cultural Broadcasting in July 2015,^[8] and she eventually voiced Paru in the game.^[1] In 2016, she voiced characters in Dream Festival! and Magic-kyun! Renaissance.^[1]

In 2018, Koike starred as Caracal, a main character in Kemono Friends 2,^[9] and she reprised her role in the 2020 video game.^[1] In 2021, it was announced that she would star as Myamu, a major character in Waccha PriMagi!;^[10] she also sang the second ending theme song "Check One Two" (alongside Rie Hikisaka, and Sunao Yoshikawa [ja]).^[11] She also voiced Mai Sunagawa in Harukana Receive, a young Lucio Cortes in Rusted Armors: Daybreak, and the protagonist in Sore Shikanai Wake Nai Deshō.^[12][1][13]

Koike's special skills are plastic modeling and railway research.^[1]