The "Ten Tails," also known as Juubi, is a powerful creature in the Naruto series. It is a massive, ancient beast that embodies the essence of chakra and is considered the progenitor of all tailed beasts. The Ten Tails has ten tails and possesses immense strength, capable of devastating attacks and manipulating energy. In the lore of Naruto, the Ten Tails was originally sealed away by the Sage of the Six Paths, Hagoromo Otsutsuki. Its existence is tied to the balance of chakra in the world, and its revival poses a significant threat to all life. The Ten Tails plays a crucial role in the series' overarching conflict and mythology.