Chuffon Prime

Chuffon Prime
Chuffon Prime is an ice moon located in the far reaches of Wild Space, it was the homeworld of the Xiis species and the site of the original research facility where Renso began his experimentations on the species.

Climate Change
Chuffon Prime was once a lush world comprised of tropical jungles and teeming with wildlife. However, once Renso and the True Sith discovered the planet and began extensive scientific experimentation on the native flora and fauna, they induced sudden and massive climate change which prompted the entire planet to become swallowed up with towering ice glaciers.

The native species, including the humanoid Xiis, were forced to flee ahead of the ice in an attempt to escape being frozen to death, the Xiis eventually managing to flee into the underground network of geothermal tunnels, where the natural heat emmited by the earth around them would keep them safe from the extreme cold, but would also ultimately lead to their evolution into the bloodthirsty predators that would threaten Known Space many centuries later.

Experimentation
Renso would later track down the colony and capture them, imprisoning them in the testing facility he set up there in order to conduct experiments on them to test their power as he attempted to create a master race of sorts. Five of the members would later rally the Xiis underneath them and rise up against Renso, beginning the Great Xiis War where the Xiis successfully collapsed Renso's Empire before the Pureblood placed the Five and their most devout follower, Illesia, into cryostasis chambers, too attached to his test subjects to kill them then and there.

Renso then wiped all record of the Xiis experiments (and Chuffon Prime) from the True Sith's astrological records and the planet would be forgotten for many years until Illesia awakens from her stasis sleep and rouses the surviving members of her brethren as well, beginning their conquest of other life forms (particularly those they perceived to be descendant from Renso and the True Sith) anew, seeking to gain enough life energy to feed the Five and reawaken them again.

Illesia would later lure Aria and Yerbol to Chuffon Prime, hoping to kill them and obliterate the last of Renso's disciples forever. However, Aria and Yerbol are able to channel their combined strength to defeat Illesia and stop the Xiis' campaign before they can cripple what remains of the Alliance. Before leaving the moon to return to Known Space, Yerbol uses their ship's turret to destroy the remains of the facility to ensure no more Xiis can be reawakened and that Renso's mistakes cannot be repeated by another.