Bluestar is a pale blue-gray she-cat with blue eyes. Bluestar was a leader of ThunderClan in the forest territories. She was a proud and deeply committed leader. Bluekit was born to Moonflower and Stormtail alongside her sister, Snowkit. She was apprenticed early as Bluepaw with her mentor being Stonepelt. However, after a devastating battle, Moonflower was killed and Stonepelt retired, resulting in Sunfall being Bluepaw's new mentor. Goosefeather gave her a prophecy, though she didn't think much of it. After becoming a warrior, Bluefur raised Whitekit, Snowfur's kit, as her own after the death of her sister, and Bluefur fell for a RiverClan warrior, Oakheart, becoming pregnant with his kits. Bluefur then realized she could not be loyal to her Clan when her heart lay somewhere else. At first, she raised Mistykit, Stonekit, and Mosskit in ThunderClan with Thrushpelt as the acting father; however, in order to become deputy instead of the ambitious Thistleclaw, whom she feared would destroy ThunderClan, she gave up her kits to Oakheart to live in RiverClan, and on the journey there, Mosskit perished. Bluefur mentored Frostfur and Runningwind, and later succeeded Tawnyspots as deputy. After Sunstar's death, she became leader as Bluestar. After Spottedleaf received a prophecy, Bluestar invited a young kittypet named Rusty to join ThunderClan, naming him Firepaw, and mentored him. Despite warnings from Fireheart, Bluestar trusted her deputy, Tigerclaw, until he tried to murder her during a battle, and she banished him, which sent her into a depressive state and turned against StarClan. After Bluestar sacrificed herself to save ThunderClan, Mistyfoot and Stonefur forgave her, and she ascended to StarClan where she became mates with Oakheart again and reunited with her kin, feeling at peace. While in StarClan, she granted Firestar, Blackstar, Mistystar, and Bramblestar one of their nine lives.