1. Kū: Kū, an anime-exclusive character, is a trainee monk from the Fire Temple with the Nine-Tails' chakra sealed inside him. He occasionally loses control and has caused destruction, breaching the Fire Temple's "Absolute Defense" seal. Kū has also resonated with Naruto in his transformed state.

2. Fū's role: Fū was the previous Jinchūriki of the Eight-Tails in the Hidden Cloud Village. Highly talented, he held a high position within the village but lost control and died during the Eight-Tails' rampage.

In the Fourth Great Ninja War, Fū fought against Killer Bee and found peace in death.

3. Yoroi Nara's tragedy: Yoroi Nara, a shinobi from Konohagakure, was manipulated by Kabuto to become the Three-Tails' Jinchūriki. Yoroi sacrificed himself before being able to use the Tailed Beast's power or even communicate with it.

4. The forgotten Monk of the Falls: The Monk of the Falls, the former Jinchūriki of the One-Tail, had a deep connection with Shukaku.

He wanted to free Shukaku from imprisonment but was declined. If he had succeeded, he could have fully controlled Shukaku's power.

5. The overlooked Amaru: Amaru is a character from the movie "Bonds" who falls in love with Naruto. Manipulated by Shinno, Amaru temporarily became the vessel for Zero-Tails' dark chakra, overpowering Naruto. She is a relatively obscure Jinchūriki.