Zi'ha'na (zeehahna) has skin of a more ashen color, but is otherwise of human proportions.  The skin at times will wrinkle and darken, but seems to have no bearing in Zi himself.  Zi has a lack of emotional features, like someone who has been too long on the front lines and has forgotten how to react to normal society.  His eyes have a grey sclera and grey/blue iris.  There is no pupil.  Hair is short, dark and unusually coarse, but is being grown out longer.  The are several markings on his arms and neck of some symbols of a unique nature.  In some ways they look more like mathematical formula's then words.