Abyss was born into a relatively regular household in which he shared good relationships with his mother and father, until a condition known as the "Evil Eye" manifested, taking the place of his right eyeball. As a result of his past, Abyss is pessimistic and desires to be useful. Despite his appearance, he is extremely shy when speaking to girls resulting in him stammering. He is also fiercely loyal to Abel Walker as he is one of the very few to accept him despite his eye.