Eren Yeager

thumb|left|Eren expresses his desire to kill the Titans Eren was best described as hardheaded, strong-willed, passionate, and impulsive, which are attributes of both his strong determination to protect mankind and, eventually, his equally strong determination to escape the Walls. Even as a young child, he was so intent on joining the Survey Corps that he argued with and shouted at his mother, referring to the people in the village as "silly" and comparing them to complacent livestock. Eren cared deeply for his friends and family, risking harm and even death in order to protect them. As a child, he took on larger boys who bullied Armin Arlert and, more tragically, he attempted to lift the rubble that crushed his mother during the Titans' assault in Shiganshina. Eren was also capable of displaying violent behavior in defense of people he did not even know. This was highlighted when he attempted to rescue Mikasa Ackerman by brutally slaughtering two of the human traffickers who had captured her. After Armin showed Eren a book depicting the wonders of the outside world, he grew to share his friend's curiosity of the world beyond the Walls and decided to see it for himself. This led Eren to develop a scornful attitude towards anyone who was content to live and die within the Walls' confines without ever setting foot outside. As a result of this, he greatly admired the soldiers of the Survey Corps, regarding them as "heroes" and wishing to join their ranks as soon as he became eligible for enrollment. He was quick to take offense when anyone spoke badly of the Corps, and his determination to join them caused friction between himself, his mother, and to a lesser extent, Mikasa. Eren has a marked lack of self-restraint that often led him into trouble, causing his friends and family to worry about him. His limited self-control was evident in his temper, which often caused him to act recklessly in anger, or say things he himself knew he should not have. This was exacerbated by his tendency to view the world in terms of black and white, where individuals who deny others their freedom were worthless scum, unfit to be left alive. Though he had great compassion, Eren had little in the way of empathy and was prone to taking things at face value, evaluating situations or ideas solely by his own arbitrary perspective and rarely ever thought deeper about them unless someone else pointed things out for him. Though Eren spoke about eradicating the Titans with seemingly great confidence, his bravado hid deep insecurities. He was often ready to blame himself and his incompetence whenever something went wrong, believing a course of action he took - or failed to take - was the reason for the disastrous results. This was most evident when he blamed himself for the death of the Special Operations Squad at the hands of the Female Titan, and for the deaths of the many veterans that perished in the rescue operation after he had been kidnapped by Reiner Braun and Bertolt Hoover. thumb|right|Eren asks Historia to eat him and save humanity Eren's ordeals since the coup d'état have mellowed his personality considerably. When he discovered the truth about where his father had been the night Wall Maria fell, he was willing to ask Historia Reiss to eat him for the good of humanity. He admitted that he viewed himself as weak, and that his reliance on the Attack Titan proved it. It took a lot of encouragement from his friends for him to overcome this state of despair and regain his passion. By the time he found out from his father's books that Titans were actually humans who were forced to transform by the Marleyan Government, he seemed to have let go of his hatred against them. When passing by a slow-moving Titan en route to the ocean, he showed no signs of anger or unrest, and instead calmly called the Titan an "Eldian." Eren possesses great amounts of perseverance, fortitude, and determination. As such, he managed to master the basics of vertical maneuvering equipment, even when his equipment was damaged, and graduate as fifth top trainee in his class despite his lack of natural talent. Eren had been noted to be quite charismatic and had a talent for delivering impassioned speeches, often unwittingly managing to persuade the mass of his listeners to sympathize with his point of view. Even Jean Kirstein, his bitter rival, had admitted this, as he convinced over half a dozen recruits to consider joining the Survey Corps before the Battle of Trost. Four years later, he made use of this skill consciously, as shown when he easily lifted Falco's spirits and convinced him to deliver a letter outside of Liberio, despite the fact that Eldians were usually forbidden from leaving the internment zone. thumb|left|Eren figures out the true location of the War Hammer Titan In the years since the recovery of Shiganshina, Eren had shown remarkable progress in his analytical and tactical skills, both in and outside of battle. Apart ...

Human form
thumb|left|Eren shortly before graduating the 104th Training Corps Eren was a young man of average height and muscular build. His facial features strongly resembled his mother's; he had a reasonably long, rounded face and sizable, expressive, gray eyes. His hair was short and black, and his bangs fell in a natural, middle-parted, curtain-type style. After his training and during his time as a soldier, he became very physically fit and muscular, although this was often unseen due to his relatively baggy clothing. After the four-year time skip, Eren grew his hair down to his neck. Eren was first seen wearing typical townsfolk attire that consisted of brown trousers, a green shirt with string tassels at the collar, a reddish-brown coat, and simple brown shoes. A few years before the fall of Wall Maria, he also wore a black scarf, which he gave to Mikasa Ackerman the day they met. As a teenager, he was often seen in the typical Survey Corps uniform while training. His casual attire consisted of a long beige shirt identical to the one he wore in his first appearance, a maroon sash around his waist, white trousers, and brown knee-high boots. He always kept the key given to him by his father dangling around his neck on a string. By the time Eren infiltrates Marley in the year 854, Eren had grown visibly taller, and his hair has grown down to shoulder length. He had a slight mustache and goatee, as well as bandages that cover his forehead and left eye. To maintain his cover, he wore the Eldian armband around his left arm, though he had initially worn the armband around his right arm before it got corrected by Falco Grice. After returning to Paradis Island, Eren discarded his Survey Corps attire and began wearing a white shirt with dark pants underneath a simple black mantle. He tied his hair back into a bun and shaved off his mustache and goatee.

Martial arts
Originally, Eren's only noteworthy trait was his natural physical strength, which stemmed from having to defend his friend Armin from bullies who were bigger and stronger. As he grew and joined the 104th squad, he trained extensively in hand-to-hand combat. After additional training with Reiner and Annie, Eren's prowess and skill set diversified, including the use of punches, throws, grappling and submission locks. He had the best scores for hand-to-hand combat of the entire 104th graduate squad. While hand-to-hand fighting would appear useless due to the massive physical differences between humans and Titans, these skills gave Eren a powerful edge when fighting other Titans in his own Titan form.