Bunpuku

This person was an elderly priest of Sunagakure and one of the former jinchūriki of Shukaku, the One-Tail.

Background
Like all jinchūriki, he was feared and despised by the villagers. His treatment was so harsh, he was locked up inside a dungeon. During a conversation with Shukaku, the tanuki asked its host if he was upset at the fact that all the villagers shunned him and that he can only talk with it. The priest noted that if he were to be separated from Shukaku, he would be dead because he was a jinchūriki. Shukaku told the priest that he reminded it of the Sage of the Six Paths, bringing the elderly priest to tears. He thanked the tanuki and noted that they were the kindest words he's received so far. He also said to Shukaku that there will be someone who will save and guide it in the future. Eventually, Shukaku was extracted from him, resulting in his death.

Personality
The priest was a kind-hearted and wise man. Though shunned by the villagers because of the tailed beast inside of him, he still thought of Shukaku as his friend and bore no ill wills towards the beast. He believed that people can accept and understand each other, even if one of them is a beast. Because he treated a tailed beast with respect, he reminded Shukaku of the Sage of the Six Paths.

Appearance
He was an elderly man and like most priests, his head was bald. He had a long, bushy moustache and beard and also had heavy-lidded sunken eyes. His attire was one generally worn by priests with over-long sleeves and a dark-coloured kimono over it. In his palms, he had the kanji for and  encarved by his master.

Abilities
As a former jinchūruki, the priest was blessed with the immense reserves of especially strong chakra and the ability to manipulate sand, both signatures belonging to Shukaku.

Trivia

 * Gaara, Shukaku's latest jinchūriki has the kanji for engraved on his forehead. The two kanji in the priest's hands actually combine to make the word "love".

Quotes

 * (To Shukaku) "The human heart is like the reflection on the water's surface… The mouth says things opposite to what the heart really feels… But in truth, the hidden heart wants people to accept each other. Even when one of them is a beast…"