Grey is mostly seen with a deadpanned and expressionless expression on his face. He someone with unwavering belief and strong motivation and will often hide his genuine feelings deep in his heart. He is always on guard, and always ready to swing his sword. As a child, Grey was much more expressive, curious, and excited until he awoke again after the destruction of his planet. He has upwardly spiked white hair, with a large piece of his bang hanging down, and purple eyes. Grey has a black headband and jacket, a blue short-sleeved T-shirt underneath, dark blue and yellow belt, black pants, dark blue and grey shoes, and white gloves with black stars and finger tips. (black on the left hand and white on the right hand) on the gloves. He wields a green blade with two blacks stripes that has a white hilt, and a hollow pentagonal pommel.