Korosen Nara, A.K.A the Indestructible Shadow. A self-given title, approved by his Mercenary parents when he grew up. Korosen is the son of a rogue puppeteer and Nara, each powerful in their own right. He had studied under them, before he was encouraged to go "make a name for himself" when he was 24. He rarely saw his parents from then on, but he would get into contact with them when times are dire. He often sends money from his Mercenary jobs back to them, as he trusts no one else with his money, and that he believes his parents are the best source of parts and materials.