Kurama

Tailed Beasts (Biju) in Naruto's World (10 items)
list by Tim Lee

Kurama (九喇嘛, Kurama), more commonly known as the Nine-Tails (九尾, Kyūbi), is a tailed beast sealed within Naruto Uzumaki. Kurama was first sealed into Mito Uzumaki after the battle at the Valley of the End, then into Kushina Uzumaki after Mito's death. During its attack on Konoha, Minato Namikaze sacrificed his life by splitting the fox's chakra into two: sealing the Yin half within himself and sealing the Yang half within Naruto.