As a Duras, Luka is one of the most beautiful classes of Demons, however, even amongst them, he stood out for his attractiveness due to the pureness of his blood.Luka has pale, transparent skin, medium-length black hair and silvery eyes. He is tall with a slender but muscular build and has a red "brand zess" on his left shoulder. He also has a small claw shaped earring on his left ear which allows him to call on his weapon (much like the rings that the Zweilt use to call their demonbane weapons)