Interesting fact:

Onomatopoeia is a big part of the Japanese language, and helped contribute to the name of this character. Here’s some inside info – ‘pikapika’ means ‘to sparkle’, whilst the sound of ‘squeeking’ is ‘chuchu’. Also, ever noticed how there’s hardly any adults in the Pokémon universe? Some gamers reckon the action kicks off right after a war where most of the adults were killed!