Isobu Sanbi is a tailed beast in the Naruto series, known as the Three-Tails. It resembles a giant turtle with three shrimp-like tails and is one of the nine tailed beasts created by the Sage of Six Paths. Isobu was initially sealed within Yagura Karatachi, the Fourth Mizukage of Kirigakure. In the story, Isobu plays a crucial role in the power struggles between villages and is eventually captured by Akatsuki. Its immense chakra makes it highly sought after by various factions.