Erwin is a young man of average height, being about five foot, ten inches tall. He weighs around one hundred and sixty-six pounds (which fluctuates, depending on his diet). He is physically fit and in his prime, having been marching and fighting for the last two years. He has dark hair and blue eyes and appears to be German. He has dings and scrapes from his childhood and there is a scar on his right breast where a piece of shrapnel, nearly spent stuck in his rib-cage. There is a smaller assortment of such scars on his lower-right arm as well, from the same shrapnel.