Eren Yeager is a central figure in the anime and manga series Attack on Titan. He is portrayed as a determined and volatile individual who harbors a deep hatred for titans after witnessing his mother's death at the hands of one. Eren is characterized by his unwavering resolve, willingness to fight for freedom, and at times, a destructive temper. Over the course of the story, Eren undergoes significant development, evolving from a naive youth to a key player in humanity's struggle against the titans. He has a complex relationship with his adoptive sister, Mikasa Ackerman, and his childhood friend, Armin Arlert. Eren is often shown wearing a hooded cloak, which he uses to hide his secret desires and a mysterious power he inherits. His life's goal is to eradicate titans and the threat they pose to humanity, a mission that drives him to make controversial decisions and ultimately leads him to become a titan shifter himself. Eren's loyalty to his friends is strong, yet his path often puts him at odds with the established authorities.