StarClan are the dead ancestors of Clan cats, who watch over the living cats' activities and sometimes give them advice or prophecies in dreams. They can be met with at the Moonstone or Moonpool. StarClan sometimes have to interfere at gatherings and such because cats don't follow the warrior code. Though, strangely enough, sometimes when you think they should've interfered they didn't.
When noble cats die, they go to StarClan. However, cats that have proven to be unworthy of StarClan's ranks are directed to The Place of No Stars, also known as the Dark Forest. ♠Pinely ~Anything Is Possible 03:48, August 4, 2014 (UTC)
Starclan is the place where the ones who have followed the warrior code go when they die, if they do not follow the warrior code, they go the Place Of No Stars. Most cats go to Starclan, usually, because they follow the code. Though, cats can die in Starclan or The Dark Forest (Place of no stars) But some cats go to Starclan, despite breaking a warrior code, but this would be due to a specific reason, making it not their fault. (Example: An apprentice was forced to kill another apprentice in their clan to become a warrior from their evil leader)