Ok in my fanfic Hollow Fates theres this "clan" called DarkClan that worship the Dark Forest. Every so often, a Dark Forest cat gets reincarnated as a kit into one of the other Clans, the 4 clans are WildClan, StormClan, FireClan and LeafClan. They get Dark Forest visions disguised as Starclan visions and get turned into medicine cats, and they eventually regain their memories from their past life and their purpose is to give information about Starclan and the Clans to the Dark Forest every blood half-moon meeting, which happens at the Bloodstone, like the Moonstone but its a ruby that connects to the Dark Forest. So anyways Nightfox!