As a child, Iwao grew his hair short and almost bald. His head was constantly shaved every three weeks and his violent training and abuse led to him having a heavily scarred face. He was considered to be rather short, albeit being well built for a child. He was very fair skinned, bordering on paleness and had 'angry green eyes'. He wore a tight bodysuit in battle, and usually just stuck to a singlet and shorts when off-mission.