Cerinia

Cerinia was the name of a supposed planet in the Star Fox series and was Krystal's homeworld. It was never visited or seen, so it is unknown what kind of environment or culture it had. It is also unsure if the planet was even part of the Lylat System. All is known is that the planet is doomed and gone.

The planet was first mentioned in Star Fox Adventures, where it is learned that the planet had been destroyed even before the beginning of the game.