Eren is of average height and muscular build. He has gray eyes, his hair is brown and grown down his neck. Eren is 19 years old. He is hardheaded, strong-willed, passionate, and impulsive. Eren cares deeply for his friends and family, risking harm and even death in order to protect them. Eren developed an unnervingly stoic and calm demeanor, never losing his composure, even if he's emotional and hot-headed naturally.