Zephyr was a simple changeling who had one job: spy on the pony's lifestyle and report back to the queen with his findings in letter format that it similar to that of Celestia's pupil and to only send one whenever he has learned anything. He descends upon Ponyville disguised as a normal pegasus pony and begins his plans but realizes he needs a stable source of love to feed on. He plans to capture one specific pony and make them his love supply to simply feast on but after his capture plan succeeds he begins to rethink his methods and even finds out he has emotions he never knew his race had.