The Harpers
The Harpers are a secret organisation whose main purpose is the preservation of all things good and right in the world. They outfox evil at every turn, with shrewd fighting or cunning political manoeuvre, and though they are not well organised (how could they be, with many members utterly ignorant of the identity of those they might claim as allies?), they are united in purpose and goal. One Harper agent deployed correctly in a conflict often achieves the same results as a loosed army.