Eren Yeager is the Main Character in Attack on Titan. He is the holder of both the Attack and Founding Titan, later the War Hammer Titan(S4) Eren was born in the Walls of Paradis Island until the Fall of Wall Maria. After his mother was eaten by a Titan(Known as the Smiling Titan), he grew a hatred for Titans and vowed to kill them all. His father soon Injected him with a Titan Serum for the Attack and Foudning Titan, giving his powers to his son. Eren remembered nothing about what happened and woke up clueless. All that was left was his Father's glasses and the key to their basement, which his father had given to him before injecting him with the serum. Eren, along with his friends, Mikasa Ackerman and Armin Arlert joined the Training Corps. After they graduated and later joined the Survey Corps after Eren had accidentally changed into a Titan. For a while Eren was deemed "Humanitys Last Hope" and was meant to help defeat the Titans with his Titan. Once Eren learned the truth about the Titans and the Island of Paradis, he vowed to free his family and friends and defeat the enemy that lived across the ocean, Marley.