One of the Holy Grails of the Krystal fandom. Play through Star Fox Adventures as Krystal! This and dozens more features in this huge mod by RenaKunisaki.
Krystal is now playable throughout most of the game, with some glitches still remaining. Amazing progress!
There are now at least three people working on getting Krystal playable in Star Fox Adventures. See some of their progress so far. Also, one of them might have found part of the old Dinosaur Planet demo code.