Erwin Smith, a Survey Corps Commander, 32 years old, 188 cm tall, stocky and muscular body, blonde hair with sea blue eyes, firm and cold character but very gentle and loving regarding his younger brother, the distance between Erwin and his younger brother is 12 years old, his younger sibling is 20 years old, always worried about his younger sibling's asthma and never allows his younger sibling to do excessive things