A Bijuu is the Japanese word for one of the tailed beasts. There are nine Bijuu in the Naruto world, both in the wild and contained in a human vessel known as a Jinchuuriki. The strongest of these tailed beasts is the Kyuubi, having the most tails out of all the Bijuu. The weakes...

The Kyuubi is the nine tailed fox demon that terrorized Konohagakure, 12 years prior to the beginning of the Naruto series. One of the tailed demons, also known as bijuus, the Kyuubi was said to be the strongest of them all, having massive amounts of chakra as well as a huge amou...