A Maia dedicated to smaller plants and animals, Mock traveled over all the settled and wooded lands of Eriador in the guise of a wandering herbalist, peddler, and madman. He was capable of changing his form to appear as an elf, man, or a hobbit. Mock had a zest for verbal humor, riddle games, and practical jokes. He aided the helpless when he met them and might go out of his way to humble the proud and cruel.