Quotes by Pikachu I am the reincarnation of Pikachu. That's why my hair is yellow, you see. Akihiro Miwa pikachu hair yellow Pikachu. 'Pika' is the sound Japanese say an electric spark makes. And 'chu' is the sound a mouse makes. So Pikachu is like an electric mouse. Satoshi Tajiri sparks pikachu sound