There is only one Walking Man at one time, he is the wrath of God in the world of men, sent among us to punish the guilty and he does not compromise. He kills all those who stand is his way. He can overthrow kingdoms or just kills any guilty and evil he sees.
Only the ones who are desperately and have nothing more to lose can make a deal with god and gets the power as long as he needs it.
Power
He has the wrath of God in him; he is nigh-omnipotent.
He’s as strong as he needs to be and as fast. He can kill with any weapon or with his bare hands. No door can keep him out, no argument can turn him aside, and nothing in science or magic can protect you from him. But if he once step down the right way, loses his belive in doing the right, he loses all of his powers.