1. Third Kazekage: The Third Kazekage possessed the rare Magnet Release kekkei genkai, making him the strongest Kazekage in history. He fell victim to an assassination plot and died a miserable death. 

2. Rasa: The Fourth Kazekage was killed by Orochimaru during the Chunin Exams and left infested with bugs. His tragic end was unworthy of his caliber. 

3. Yagura: Yagura, the Fourth Mizukage, had complete control over the Three-Tails and was an exceptional shinobi. However, he spent his life under the control of Obito as a puppet, meeting an untimely demise when the genjutsu was broken. 

4. Tobirama Senju: The Second Hokage was attacked and killed by rogue shinobi during the alliance ceremony, sacrificing himself to protect his disciples.

5. Minato Namikaze: The Fourth Hokage died defending Konohagakure from the Nine-Tails attack, leading to the sealing of the Nine-Tails within his son Naruto. His promising future was cut short, and his wife also lost her life.