Ami Koshimizu

In Demon Slayer: Kimetsu no Yaiba, the series produced by Ufotable, Koshimizu voices the Spider Demon (Mother), one of the demons encountered on Mount Natagumo. The role draws on a flexibility that has defined her career, since she is noted for voicing a remarkable variety of character types, from young girls and adult women to boys and animals. That same range allows her to shade a part like the Spider Demon (Mother) with a tone distinct from the heroic leads she frequently plays. Within a body of work crowded with starring roles, her Demon Slayer appearance illustrates how readily she shifts between protagonists and the darker, more unsettling figures that populate the series.

Born February 15, 1986, Koshimizu has worked as a voice actress since 2003. Her lead roles include Ryuko Matoi in Kill la Kill, Kallen Stadtfeld in Code Geass, Charlotte E. Yeager in the Strike Witches series, Holo in Spice and Wolf, Tenma Tsukamoto in School Rumble, and Nadja Applefield in Ashita no Nadja. She has also voiced Sailor Jupiter in Sailor Moon Crystal, Mikumo Guynemer in Macross Delta, Shizuri Mugino in A Certain Scientific Railgun, and Yang Xiao Long in the Japanese dub of RWBY and RWBY: Ice Queendom, underscoring a steady run of prominent parts.

Koshimizu's work extends widely into video games, where she has voiced Agnès Oblige in Bravely Default, Yukiko Amagi in Persona 4, Mai Shiranui beginning with KOF Sky Stage, Mist in Rune Factory, Tsuruhime in Sengoku Basara, and Beidou in the Japanese dub of Genshin Impact, along with roles in The Legend of Heroes: Trails of Cold Steel and Arknights. A singer as well as an actress, she is additionally known for dubbing Thai films starring Yanin Vismitananda and for voice work in the live-action film Shimajiro and the Rainbow Oasis.