The Third Hokage, also known as Hiruzen Sarutobi, was a skilled ninja and a formidable fighter. He was considered one of the most powerful shinobi in his time and was respected by many, including his former student, the legendary ninja Jiraiya.

Hiruzen was well-versed in multiple ninja techniques, including ninjutsu, genjutsu, and taijutsu. He was also proficient in the use of various elemental chakra natures, such as Fire Release and Earth Release, which he used to great effect in battles. Hiruzen was known for his mastery of sealing techniques, which he employed to seal away dangerous enemies and powerful techniques.
In his prime, Hiruzen was considered one of the strongest ninja in the village and was feared by his enemies. He was able to take on multiple opponents at once, including other Kage-level shinobi, and come out victorious. For example, he was able to defeat Orochimaru, one of the legendary Sannin, in battle, despite Orochimaru’s powerful jutsu and cunning.
Hiruzen’s strength was not limited to combat skills alone. He was also a wise leader and a skilled diplomat, who was able to maintain the fragile balance of power between the five great ninja villages. He was also a mentor to many young ninja, including the legendary trio of Naruto, Sasuke, and Sakura.
However, despite his many accomplishments and his considerable power, Hiruzen was not invincible. He was eventually defeated in battle by Orochimaru during the attack on Konoha by the Sound and Sand ninja, which led to his death. It should be noted, however, that he was already quite old and had passed the mantle of Hokage to Tsunade at the time of his death.
Overall, the Third Hokage was a powerful and respected ninja who was feared by his enemies and revered by his allies. His strength was not just in his combat abilities but also in his leadership and wisdom, making him one of the greatest Hokage in the history of the Hidden Leaf Village.