The Nightblade frame has medium length grey hair, a half updo into a ponytail, antenna hair and hair intakes, he has heterochromia eyes, blue left and yellow right. Other notable facial features includes a barcode forehead tattoo and a scar on left cheek. Typically depicted with only the left arm being mechanical (single mechanical arm), though depending on awakening level of the frame, both arms can be mechanical.
Apparel consist of several layers, inner-most is a black bodysuit with mechanical elements, followed by a dark brown waistcoat, outerwear is a brown/beige trench coat, black suit pants and black boots. Other note worthy apparels are harness and wearing multiple belts.