Luko is a creature that appears to be a slender human male, approximately 25-30 years old, and 6'0 tall. Luko's skin is dark gray and partially covered in hard blue-violet scales, and his eyes have no pupils or irises, dimly glowing with a soft yellow light. Luko's hair is black, short and combed back. Luko is phlegmatic, practical, irritable, cold, rude, sarcastic, a loner, unromantic, indifferent, professional, smart, diligent, protective, quick-witted, and born to not interfere.