Ten Tailed Demonic Spirit

Ten Tailed Demonic Spirit more commonly the Ten Tails (十尾, Jū-bi) is one of the Tailed Beasts. The Demonic Spirit was fused within Cassandra Uzumaki.

Background
After the Era of the Sage of the Eight Paths, Juubi continues roam freely like a dinosaur. However Juubi was invited into a Banquet by Izumogakure. Juubi met Cassandra and fused together to make her a Jinjuriki.

Trivia
The Juubi bears the resemblance of Vattu