Eren Yeager is the main protagonist of the popular anime and manga series Attack on Titan. He is known for his fierce determination to protect humanity from the Titans, giant humanoid creatures that threaten their existence. Eren's journey is marked by his evolution from a passionate young boy to a complex figure grappling with moral dilemmas and the consequences of his actions. Throughout the series, Eren's character undergoes significant transformation, revealing deeper motivations and struggles. His relationships with friends like Mikasa Ackerman and Armin Arlert play a crucial role in shaping his decisions and the overall narrative, making him a compelling and relatable character in the world of anime.