Vortex Haku: Haku is a member of the Uzumaki clan and the wife of Hashirama Senju. She possesses the power of the Nine-Tails Jinchuriki and excels in sealing jutsu. Her chakra allows her to control the Nine-Tails and use its power.
Kushina and Madara: Kushina is also a member of the Uzumaki clan and the second Jinchuriki of the Nine-Tails. Madara extracted the Nine-Tails from her, leading to her death. He used the beast to attack Konoha, but Minato sealed its chakra within himself and Naruto to protect the village.
Kin and Gin: Kin and Gin are the leaders of the Kumogakure's Gold and Silver Allied Forces. They orchestrated a coup d'état during the First Great Ninja War and were swallowed by the Nine-Tails. After being regurgitated, they gained their chakra and could undergo Tailed Beast Mode.
Kū: Kū is an original character in the Naruto anime. He is the son of Konoha's Twelve Guardian Ninja, Torune, and Mui. They sealed residual Nine-Tails chakra within him, allowing him to partially transform into the beast and use Tailed Beast Balls. To learn more about these characters and their stories, viewers can watch the Naruto anime series.