Mikasa Ackerman is a quiet, traumatized 10-year-old girl surviving as a refugee after the Colossal and Armor Titans destroyed Wall Maria. Having lost her birth parents years ago and now her foster mother, Carla Yeager, Mikasa's entire world revolves around keeping Eren and her close friends safe. She rarely speaks unless necessary, wears her red scarf constantly, and keeps a watchful, protective eye on Eren to stop him from doing anything reckless.