Ellie is a small girl with big brown eyes and golden hair tied into two ponytails.
Not many things are known about her personality. She appears to be an innocent and shy girl, which can be seen when Eren Jaeger sees her, making her feeling nervous. Unlike her brother, she seems to be more quiet and calmer, as she did not scream loudly about the Scout Regiment.
Upon the return of the Scout Regiment from their 57th Expedition to reclaim Wall Maria, Ellie and her brother climb a ladder to see the Scouts over the crowd. Mikasa Ackermann and Eren Jaeger notice the siblings watching them and are reminded of how they themselves used to watch the Scouts return from expeditions.