BackgroundCenturies before the founding of the hidden villages, the Sage of the Six Paths saved the world from the Ten-Tails. He managed to subdue the beast and sealed it within his own body, becoming what could be considered the first jinchuuriki. However, this offered merely a temporary solution to the menace: in the event of his death, the seal would dissolve and the Ten-Tails would once again be unleashed upon the world. Knowing this, the Sage searched for a more permanent solution. Ultimately, the Sage succeeded by using his Creation of All Things (Banbutsu Sozo) ability to divide the Ten-Tails’ chakra into the nine monstrous entities that would later become known as “tailed beasts”, scattering them throughout the world. As a final precaution, using Chibaku Tensei, the Sage entombed the physical remains of the Ten-Tails within a colossal stone prison and hurled it into the heavens, creating the moon. The astonishing feat of not only successfully sealing the Ten-Tails, but also suppressing it, made the Sage a godlike hero throughout the shinobi world.
AppearanceIn the manga, the Ten-Tails has only been seen in silhouette, but the form of its body seems to be closest to that of the Nine-Tailed Demon Fox’s body, but with several spiky protrusions visible behind its head. Also, it appears to have only one unique eye, which has four Rinnegan-like concentric circles, with nine Sharingan-like tomoe in the three circles closest to the pupil coloured red.
As the fusion of all nine tailed beasts, the Ten-Tails was said to possess massive and overwhelmingly foul chakra that is potent enough to bring total despair and destruction to the world. Because the nine tailed beasts are merely by-products of the Ten-Tails, it is presumed that the Ten-Tails has all of their traits, condensed into a single body. It was shown having a single unique eye, but what it is or if it is a unique doujutsu is unknown.