1. Wooden Statue is a powerful Jinchuriki ninja from the Hidden Cloud Village in Naruto. She has the ability to control a Tailed Beast, like Killer Bee. However, she was defeated by Kakuzu and Hidan due to her lack of understanding of the Akatsuki duo's abilities. During the Fourth Great Ninja War, she caused trouble for Naruto and Killer Bee by using the Fire Rat Crystal.

2. Shi is a skilled ninja specializing in illusions, sensing chakra, and medical ninjutsu.

His Lightning Pillar can cut off Pain's vision. As a sensor ninja, Shi can also locate the real Pain, Nagato.

3. The hot-tempered Fourth Raikage would not stay behind like Tsunade. He would fight Pain on the front lines with immense speed and powerful Lightning Style, even breaking through Susano'o. His physical attacks cannot be absorbed by the Preta Path, making him a great challenge for Pain.

4.

Killer Bee, the perfect Jinchuriki, has a deep emotional bond with the Eight-Tails. Pain struggled against the partially unsealed Nine-Tails, so facing Killer Bee, who can perfectly control the Eight-Tails, would be painful.

5. Darui, a former bodyguard of the Fourth Raikage, excels in close combat and possesses Storm Release. His overall strength surpasses Kakashi's, and he even became the Fifth Raikage. He would only have trouble fighting the Deva Path.