Eren Yeager

Eren Yeager (Eren Yēgā?, (often romanized as "Eren Jäger/Eren Jaeger") is the main protagonist of Attack on Titan. He lived a peaceful life in Shiganshina District with his now late parents Grisha and Carla Yeager, and his adoptive sister Mikasa Ackerman, until the town was destroyed by Titans during the fall of Wall Maria. After witnessing the death of his mother at the hands of the Smiling Titan, he vowed to wipe out all Titans in revenge.

He joined the 104th Trainees Squad along with Mikasa and his childhood friend Armin Arlert, graduating as the 5th best soldier, and is currently a member of the Survey Corps. He is also a person with the ability to transform into a Titan and the current holder of the power known as the Coordinate. Eren was born in the Shiganshina District of Wall Maria to Karla Yeager and Grisha Yeager, a doctor. He had few friends, though his best friend was Armin Arlet, who he often defended from the neighborhood bullies. Armin inspired his passion to leave the Walls and travel by showing him a hidden book about the outside world. He dreamed of joining the Survey Corps as soon as he reached the enlistment age, in order to see the outside world. Because of this dream, Eren and Armin were regarded as heretics and harassed. When Eren was nine years old, he saved Mikasa Ackerman from being sold into slavery by human traffickers. On a visit to the Ackermans' home, he and his father discovered both parents murdered and their daughter missing. Fearing the worst, Dr. Yeager instructed Eren to stay within the house while he fetched the police. However Eren, wanting to rescue the missing girl as soon as possible, managed to track the kidnappers' trail to a small cabin in the forest behind the house.

Opening the door to the room where Mikasa was being held captive, he found her laying on the floor with two of the kidnappers keeping watch. Feigning distress and saying that he was lost, he got them to drop their guard. As one of them closed in to pat his head, Eren slit his throat with a knife he had hidden behind his back and quickly ducked back out of the room. As the second man went after him with an axe, Eren charged him with a makeshift spear, piercing him in the shoulder. Once he was down, Eren proceeded to stab him to death in a wild frenzy while Mikasa looked on in horror. As Eren untied her in the aftermath, he was caught off-guard by the third kidnapper, who proceeded to strangle him. Mikasa picked up the knife Eren used, but balked at the thought of using it to kill someone. Eren urged her to fight back, warning her that they would both be killed if she did nothing. As Eren began to lose consciousness, Mikasa finally lost all inhibition and lunged at their attacker, stabbing him through the heart and killing him instantly. When Dr Yeager eventually returned with the police in tow, he took Eren aside scolded him angrily for his reckless behaviour. While Eren was genuinely sorry for upsetting his father, he expressed no remorse whatsoever for killing the kidnappers. When Mikasa remarked that she was cold, Eren gave her the scarf from his own neck; and when Dr. Yeager invited Mikasa to live with their family from then on, Eren accepted her with no hesitation, tugging on her sleeve and shyly insisting that they return home.