Aladine appears to be rather calm and level-headed. As a former slave, he is able to understand the kind of trauma that a freed slave goes through. Also, despite his personal trauma of suffering as a slave, he managed to overlook it in order to tend to World Noble Mjosgard's wounds, at least at the request of Otohime.
Aladine is a tall, muscular merman. He has slanted thin eyes, dark hair that is tied in a long ponytail falling on his back in many curves, and a full beard with a goatee.