1. Black Soil: Black Soil, the granddaughter of the Third Tsuchikage Ōnoki, is a skilled Earth Release ninjutsu user. Despite not inheriting her grandfather's Dust Release, she displayed great proficiency in the Fourth Great Ninja War, where she and Kurotsuchi used Earth Release to restrict the Ten-Tails' movements. However, as the Fourth Tsuchikage, her performance fell short of expectations, lacking the experience and maturity of a Kage-level ninja.

2. Gaara: Gaara, a former Jinchūriki of the One-Tailed Shukaku, possesses powerful sand control abilities.

He became the strongest Genin of his time and defeated even the skilled Rock Lee. After a change of heart inspired by Naruto, Gaara became the Fifth Kazekage. However, his battle against Deidara exposed his limitations, as he was defeated by a supposedly weaker Kage-level opponent.

3. Chōjūrō: Chōjūrō, once a member of the Seven Ninja Swordsmen, served as the Mizukage's bodyguard. His lackluster performance during the Fourth Great Ninja War prevented him from showcasing Kage-level capabilities. As the Mizukage, he proved to be the weakest in history, unable to defeat lower-level shinobi or execute strong Water Release jutsu like his predecessor, Yagura.

4. Hanzō: Hanzō, the former leader of Amegakure, was once highly regarded for his incredible speed. Although he defeated the Third Hokage's students and earned the title of "Sannin," he overestimated his own abilities. Hanzō was later single-handedly defeated by Pain's Deva Path, revealing his true level of strength.

5. Fū: Fū, a member of Akatsuki, possesses formidable abilities but lacks intelligence.

Her predictability and reliance on her partner Torune were evident in her battle against Team Asuma. Without Torune's assistance, she would not have been able to defeat them, indicating that she does not possess the skills of a Kage-level ninja.