Aya Hara played Krystal's voice in the Japanese version of Star Fox Assault and Super Smash Bros. Brawl. She has also done voices in a couple other video games and anime. She has worked on other art related projects as well. Not much else is known about her at this time. If you have some other information or images, please contact us. Despite listings saying otherwise, Aya Hara is not the voice actor for Krystal in the Japanese version of Star Fox Adventures. The Japanese version uses the English voices.
Hear some of her work in Star Fox Assault.
Thanks to Ksathra Blackfox for confirmation.