Koala is a young woman with large, round purple eyes that resemble those of a koala. Her hair, once long and unkempt during her enslavement, is now neat and shoulder-length. She wears a yellow dress with an orange diamond pattern along the hem, a far cry from the dirty overalls and smudged cheek of her past. A former slave to the World Nobles, Koala carries the trauma of her childhood heavily. She is perpetually apologetic, quick to work without rest, and hesitant to express emotion or trust others. Though freed, she still fears that stopping or crying might lead to punishment, a scar left by years of servitude. Her smile hides a deep-seated anxiety about the world and the people around her.