The Criosphinx, also known as Ginger X, is a boss in Chrono Cross. It is a mysterious, intelligent, and incredibly powerful entity which roosts in the Earth Dragon Isle of Another World. It can be faced after activating the sand boil on Earth Dragon Isle in the Home World. Its origins are unknown, it harbors antagonism towards mankind for its destruction of the planet (comparable to the Dwarves). It can be defeated through brain or brawn; it cautions against those who use the latter exclusively.
To answer the riddles of the Criosphinx, use an Element corresponding to the color he describes. He can easily be defeated if Yellow Plates are equipped to characters.