Bluestar was the leader of ThunderClan in the old forest territory. She was the one who recieved the life-changing prophecy, Fire alone will save our clan, from the medicine cat at the time, Spottedleaf. Bluestar was the one who let the formerly kittypet Rusty into her clan, and changed his name to Fireheart. Bluestar was also mother to RiverClan cats Mistyfoot and Stonefur, having had them (as a result of a secret and forbidden affair) with RiverClan deputy Oakheart. Bluestar's warrior name was Bluefur. 

Mate: Oakheart (formerly)

Kits: Mosskit, Mistyfoot, Stonefur

Mother: Moonflower

Father: Stormtail

Sister: Snowfur