Izuku, The Knight Of Emerald Light

There are 3 Words to describe Izuku Yagi, Marine, Lantern and Hero.

And as The Hero he was, Izuku sacrificed One for All in order to defeat Shigaraki and All for One, leaving him exactly as he was before he inherited his Father's Quirk.

As a result, Izuku was unable to become a Hero again, so instead, became the youngest Teacher in UA history.

But because of his Heroic Heart and Unbreakable Will, Izuku couldn't give up on helping people. He would lend a hand wherever he could, such as when innocent civilians were being treated like Villains by Heroes, who would naturally stop out of respect because of who Izuku is.

However, Izuku began to lose hope after a few years of this, no longer believing that he could help others with a smile the way his Father and his Sister were currently doing.

Even though Izuku was starting to lose all Hope, his Will would not break, and this trait attracted the dying wishes of an Alien named Ganthet who would give Izuku a Glowing Green Ring that would enable him to become a Stronger and more Powerful Hero than he had ever been with-One For All.

The Ring of a Green Lantern...