The Жthoÿi is the third participant in World War III. They are special in a way that they don't live on Earth. They are akulsay living in their own planet, also called Жthoÿi, and their only relationship to Earth is the fact that there is a charter of some sort. Arriving in D17, they came here because of the Earthlings breach in a certain treaty made sometime in the early 108th Century.