Eren Jaeger (エレン・イェーガー Eren Yēgā?) is a member of the Scout Regiment and the main protagonist of Attack on Titan. He is the only son of Grisha and Carla Jaeger and the adoptive brother of Mikasa Ackermann, and is a Titan Shifter, with his titan called the Mysterious Titan. Two years later, he along with Mikasa Ackermann and his best friend Armin Arlelt joined the 104th Cadet Corps. The three successfully graduated, with Eren ranking as the 5th best cadet, and they joined the Scout Regiment following the struggle for Trost.