Sampo Koski is an eloquent mercenary from the Underworld who does all sorts of jobs for his "customers," as long as he doesn't get paid off with a higher price. He acts like he is everyone's friend, is enthusiastically humorous, and is good at bantering. Where there is profit to be made, you can be sure Sampo is nearby. Sampo's unique knowledge makes it hard not to approach him for help, but "customers" can quickly turn into "commodities" for the right price.