1. Hiraishin: Hiraishin is a powerful ninja known for his forbidden jutsu and impressive swordsmanship. His most deadly move is Hiraishin Zan, where he uses teleportation to deliver a fatal blow.

2. Uchiha Izuna: Izuna, Madara's brother, is a formidable rival to Hiraishin. He surpasses Madara in swordsmanship and excels in Fire Style and Mangekyou Sharingan. Hiraishin recognizes Izuna as a strong opponent. 

3. Gekkou Hayate: Hayate is a master of Konoha-style swordsmanship, known for his deadly techniques Sanzetsu no Mai and Hiken: Tsukikage. Unfortunately, he died in battle before reaching his full potential. 

4. Uchiha Shisui: Shisui, a Uchiha genius, excels in the Body Flicker Technique and possesses the strongest genjutsu, Kotoamatsukami. He is also skilled in short swordsmanship and Fire Style attacks. 

5. Koji Kashin: Koji, a low-ranking Konoha ninja, has abilities inherited from the Second and Third Hokages. He is an elite Jounin and a rare master swordsman.