Some Kage in Naruto, including Naruto Uzumaki himself, are relatively new to the position, while others have held the title ...

Kishimoto had some ambitious plans for the fourth hokage in Naruto. He did not even plan to make him human at one point.

Tobirama Senju was ready to become the greatest villain in Naruto to ensure that Hashirama Senju's dream didn't collapse over his naivety.