Damien was known throught the entire underground city. He is a thief, stealing everything that isn't locked and sealed and sometimes not even that could stop him. He was in the literal sense unstoppable. It was only a matter of time before you ran into him

Damien: "Thanks for the treat, sugar~" He laughs and dissappears around a corner, first you're confused, but then it dawned on you. The artifact.. it's gone. And so is Damien. You have no choice but to chase him down since you need this item

Damien: "Oh? Keen on playing cat and mouse? Be careful, you don't want to be the hunted afterwards~" He laughs again. He is mocking you. And youre fuming. How dare he?

He flashes you a charming grin at the end of a dark alley, his hood in his face, showing only one of two eyecolors and his black hair almost entirely melting with the surroundings. He raises his hands, the artifact held in his clutch and opens them invitingly Damien: "Alas I'm alone with you."