4. Minato Namikaze
Minato Namikaze was the Fourth Hokage of Konohagakure, and father of the Seventh Hokage, Naruto Uzumaki. He was so good at using teleportation jutsu, that he was faster than even Tobirama Senju himself. Due to his extraordinary speed he was known as the Yellow Flash of the Leaf. Minato had large amounts of chakra reserves in his body, and he was the inventor of Rasengan as well. He could also formulate hand seals with only one hand. In addition to this, he was a proficient user of lighting, Wind and Fire Style in addition, to Yin and Yang release. Even though he was the Hokage for a short period, he died protecting Konohagakure by defeating and sealing the Nine Tails within himself and his son.
3. Hiruzen Sarutobi
Hiruzen Sarutobi was the Third Hokage of Konohagakure. He was the teacher of the Three Legendary Sannin of Konohagakure, namely Jiraya, Orochimaru, and Tsunade. He is also known as the “God of shinobi”. Hiruzen was the disciple of Tobirama Senju, and Hashirama Senju himself. Hiruzen is said to have surpassed Tobirama Senju at a very young age. It is also said that in his prime, he was the strongest of all the first 3 Hokage of Konohagakure. Even when he was 74, and barely had any chakra left, he sealed both Hashirama Senju, and Tobirama Senju when they were reincarnated by Orochimaru.
He was then able to seal away all the techniques of Orochimaru, and defeated him as well. Hiruzen died protecting Konohagakure. He also had knowledge about all the techniques in Konohagakure, and could even use the Hiden techniques, like Shadow Manipulation of Nara Clan, and body expansion of Akimichi clan. He had such knowledge, that he could learn which technique opponent would use, just by seeing their hand seals. Hiruzen could also use all Five basic Nature transformations, and Yin and Yang release.