"Panic flooded his thoughts until he froze, too scared to move. Something evil was happening to these spirits. He began to tremble, a yowl of anguish rising in his throat. He tried to swallow it back, but it tore out of him, joining the anguished wails of the spirit cats." - Rootspring during the Sisters' ceremony, Darkness Within
Ashfur is a spirit and a former ThunderClanwarrior. Ashkit was born to Whitestorm and Brindleface alongside his littermates, Fernkit, Elderkit, and Tulipkit, and his foster brother was Cloudkit. Ashpaw was apprenticed to Dustpelt, and soon only he, Fernpaw, and Cloudpaw were the surviving members of their family. As a warrior, Ashfur befriended Squirrelflight and wished for them to be mates, but was distraught when she chose Brambleclaw instead. Ashfur harbored his despair over Squirrelflight for many moons, and nearly killed her children in revenge, until he learned that they weren't her biological children. However, before he could reveal the truth, Hollyleaf killed him and Ashfur went to StarClan. However, he continued to plan his revenge, and saw an opportunity to possess Bramblestar's body. While he wrecked havoc on the Clans and exiled codebreakers in StarClan's name, Ashfur trapped and possessed spirits in the Dark Forest, all leading to a battle between the living and the dead.
The Place of No Stars (residence), also known as the Dark Forest, is the place where cats who committed heinous acts against the warrior code and the Clans after they die, the opposite of StarClan's hunting grounds. It is a dark, endless forest with dead trees, a black, starless sky, with marshes, rivers, caves, tunnels, ridges, and a dark lake with a muddy island. Fungus sickly glows on trees, and cats who wander here can easily get lost in the twisting terrain. For many moons, the Place of No Stars residents trained numerous Clan cats to fight against StarClan and the living Clans in preparation for the Great Battle. After many moons of silence, a mysterious fog is encroaching on its territory, fading the land and the spirits trapped behind it.