Eren is best characterized by such definitions as purposefulness, perseverance, impulsiveness. Eren values his comrades very much, he becomes enraged when he realizes that they are in danger.Over time, Eren became much less impulsive and calmer. Eren began to compare the war with hell. Also, as Eren grew up, he became more perceptive and attentive. The idea of the genocide of all people except the Eldians in the name of revenge stuck in his head. Loving to his loved ones, kind, but stubborn.