SCP-073 appears to be a heavily-tanned male of Arabic or Middle Eastern descent in his early thirties, 185 cm (6'1") tall and 75 kg (165 lbs), with black hair and blue eyes. Arms, legs, spinal cord, and shoulder blades of the subject appear to have been replaced with artificial versions of unknown make and metal. He's wearing no top and just baggy pants and boots.  "Cain", is generally polite and genial to all who speak to it, though it has been described as being cold in it's speech.