Ikue Ōtani has voiced Pikachu in the Pokémon anime since its original Japanese premiere. Her performance uses Pikachu’s name and distinctive vocal sounds rather than ordinary human dialogue.
The production team wanted Pikachu to communicate through cries and intonation while remaining understandable as an animal-like partner. During auditions, Ōtani demonstrated that she could convey emotion and meaning with a limited set of sounds.
Pikachu’s voice became one of the franchise’s most recognizable audio signatures. Unlike many characters in the series, Pikachu generally says its own name in multiple tones instead of speaking full sentences in the human language.
Ōtani’s role is separate from the voice of Ash in the Japanese version, which has been performed by Rica Matsumoto. English-language viewers may also associate Pikachu with different dubbing and film performances, but Ōtani is the original Japanese anime voice.