Minato Namikaze is one of those characters and Masashi Kishimoto has done a perfect job of painting the picture of a true legendary character and ninja when it comes to Minato. He is first presented as this mystery leader (Hokage) who ruled over the leaf village.
Slowly as the viewers get to know the main protagonist, we get to see little by little a bit more of who this legend was and how powerful he was. But it was always the case that this character was so great and powerful. And even though he’s gone, the people still remember his name, The Yellow Flash of the Leaf.