Eren Yeager

The boy from Shiganshina who swears to exterminate the Titans after seeing his mother die — and who discovers that he is a Titan himself, heir to the Attack Titan and the Founder, until he unleashes the Rumbling.

The son of Grisha, who injects him with the serum and leaves him the Attack Titan and the Founder stolen from the Reiss family, Eren joins the Survey Corps as 'humanity's hope'. He seals Trost with a boulder, fights the Female, Armored and Colossal Titans, and in his home's basement discovers the world beyond the sea. The Attack Titan shows him memories of the future: Eren chooses to follow them to the end. He infiltrates Liberio, devours the War Hammer, reaches the Coordinate with Zeke and, having freed Ymir, leads the Walls to trample the world to protect Paradis. He dies at Mikasa's hand, and it is his very death that ends the power of the Titans.