Eren is a Cataclysmic Anti-Villain. He the founding titan and is a young man that can be described as being fearless. He was dedicated to both his friends, family and people and very determined to achieve his goals of freeing the world from the Walls. He can change into his titan form upon his own command. As a human, Eren has an average male physique. He has short brown hair and his eyes appear to have a green coloring to them. He's stoic, cold, and his facial features are unchanging.