Ganryū

is a shinobi of Kirigakure.

Background
10 years prior the start of the series, Ganryū and his team were sent on a mission to retrieve a document taken by Kumogakure with Iwagakure's assistance. However, when the document was retrieved, Iwa betrayed the Kiri team and killed Junsai and Suiren, who sacrificed herself to save Ganryū. Since that day, Ganryū has held a deep hatred against Iwa.

Adventures at Sea Arc
After hearing of the formation of the Allied Shinobi Forces, Ganryū and a team of Kiri ninja plan to wait on a small island where messengers from Iwa are to meet up with them. Ganryū and his team attack the messengers, Akatsuchi and Kurotsuchi, in hopes of killing them to break off the alliance with Iwa. With the arrivals and interferences of Naruto Uzumaki and Chōjūrō, him and his team retreat. Later in the night, Ganryū decides to ambush the Iwa ninja while they are resting alone, telling his team he will take every shred of their anger and hatred. Naruto finds Ganryū who recognises him as the Nine-Tailed Jinchūriki who defeated Pain. Knowing what he has been through, Naruto convinces Ganryū give up his revenge and assures him he will bring peace to the world which Suiren wished for. Suddenly, Kurotsuchi arrives and attempts to kill Ganryū but Naruto steps in and protects him. Chōjūrō arrives to apprehend Ganryū for his crime and he surrenders. Chōjūrō also gives Ganryū a box containing Suiren's bracelet which was to be given back to Ganryū from Iwa to strengthen their bond and apologise for their betrayal. It is unknown what became of Ganryū afterwards as Chōjūrō says he will either be released or executed for his crime.

Trivia

 * In episode 218, Ganryū was mentioned briefly by other Kiri ninja.