Reaper is a major antagonist in the Gun Guy franchise. He is a human yet mysterious and extremely professional assassin/mercenary who earned a reputation as the world's best, deadliest and most fearsome mercenary. Carrying a wide range of high-tech weaponry and equipment as well as his extreme physical and mental skill, he takes on a number of difficult tasks often alone due to lack of trust and treats his rough job like ordinary life and the money as a secondary prize to the clients' satisfaction.