Yagura (やぐら, Yagura) was the jinchūriki of the Three-Tails and the Fourth Mizukage (四代目水影, Yondaime Mizukage, Literally meaning: Fourth Water Shadow) of Kirigakure. When the Three-Tails was captured by Akatsuki, it had no host and roamed out in the wild.

Yagura, being the strongest shinobi in his village at that time, was elected as the Fourth Mizukage at a very young age. He was made a jinchūriki at a very young age and learned to control its powers over the following years. During his reign, he was known to have no tolerance for any form of treachery against the village and he reinforced its nickname as “Village of the Bloody Mist” (血霧の里, Chigiri no Sato) by the barbaric ritual where Academy student’s would be forced to kill each other in order to graduate. The practice was discontinued when an entire graduating class of students was massacred by a young Zabuza Momochi.

Following the Three-Tails’ revival after being “killed” in Rin Nohara, the tailed beast was sealed within Yagura. As a jinchūriki, he became known as the third person to achieve full control over a tailed beast. Around this time, a masked man who claimed to be “Madara Uchiha” took control of Yagura, effectively gaining control over the village. After Kisame Hoshigaki killed Fuguki Suikazan for leaking intel to other villages, Yagura commended Kisame for killing the traitor, before “Madara” revealed that he was manipulating the Mizukage.