From Bulbapedia, the community-driven Pokémon encyclopedia.
Ikue Ohtani (Japanese: 大谷育江 Ōtani Ikue; also seen as Ikue Ōtani, Ikue Ootani and Ikue Otani) is a Japanese voice actress for the Pokémon anime. She was born August 18, 1965 in Tokyo, Japan.
Ohtani's most famous role on Pokémon is that of Ash's Pikachu. She has also provided the voices of many Pokémon and characters of the day.
For health reasons, she took leave from her work from January to May 2006. Clips from previous episodes were reused for Pikachu, and Mime Jr. was voiced by Tomoe Hanba (半場友恵) from AG161 to AG175.
She provided the voice of Pikachu in Pokémon Live! and several video games, including:
Famous non-Pokémon roles
In anime and video games
In dubbed productions of English shows