Ancestors of all cats
Spoiler Warning: Plot and/or ending details follow.(spoilers highlighted)
StarClan are the deceased ancestors, descendants and Clanmates of the Clan cats. Cats are only allowed to join StarClan when they die if they have lived an honorable life and followed the warrior code. If a cat doesn't live an honorable life, then that cat will end up in the Dark Forest, also known as the Place-Of-No-Stars. StarClan cats don't have to be in a Clan at the time of their death to be welcomed to StarClan, shown in Bluestars Prophecy, when Pinestar was in StarClan, despite him being a kittypet at the time of his death.
When a Clan cat dies, they will be guided to StarClan by a deceased cat who played an important part in their life, such as a mentor or a cherished family member. When a cat dies and goes to join StarClan, they merely close their eyes and reopen them. When a leader loses a life, that life appears in StarClan as a very faint copy of the leader, but they are unable to communicate in any way to other StarClan cats until the leader loses their final life.
StarClan cats leave starry paw prints, their eyes shine like stars, and their pelts glow with a strange light, which makes them look like they have stars in their fur. Frost sparkles at their paws and glitters in their eyes. Their pelts shine like ice and carry all the scents of the seasons: the tang of leaf-bare, the green scent of greenleaf, the musk of leafall, and the sweet blossom of newleaf. The cats' spirits remain in StarClan until they are forgotten by all living and dead cats over a long time and earned their own peace, causing them to fade away to little more than ghost-like images of themselves. It is possible for a StarClan cat to be killed again, but they vanish forever; going to a different place.
StarClan are the deceased ancestors, descendants and Clanmates of the Clan cats. Cats are only allowed to join StarClan when they die if they have lived an honorable life and followed the warrior code. If a cat doesn't live an honorable life, then that cat will end up in the Dark Forest, also known as the Place-Of-No-Stars. StarClan cats don't have to be in a Clan at the time of their death to be welcomed to StarClan, shown in Bluestars Prophecy, when Pinestar was in StarClan, despite him being a kittypet at the time of his death.
When a Clan cat dies, they will be guided to StarClan by a deceased cat who played an important part in their life, such as a mentor or a cherished family member. When a cat dies and goes to join StarClan, they merely close their eyes and reopen them. When a leader loses a life, that life appears in StarClan as a very faint copy of the leader, but they are unable to communicate in any way to other StarClan cats until the leader loses their final life.
StarClan cats leave starry paw prints, their eyes shine like stars, and their pelts glow with a strange light, which makes them look like they have stars in their fur. Frost sparkles at their paws and glitters in their eyes. Their pelts shine like ice and carry all the scents of the seasons: the tang of leaf-bare, the green scent of greenleaf, the musk of leafall, and the sweet blossom of newleaf. The cats' spirits remain in StarClan until they are forgotten by all living and dead cats over a long time and earned their own peace, causing them to fade away to little more than ghost-like images of themselves. It is possible for a StarClan cat to be killed again, but they vanish forever; going to a different place.