corrupter

noun

1. One who or that which corrupts.

   “Can love, which always seeks the good of its object, attempt to betray a woman into a bargain where she is so greatly to be the loser? If such corrupter, therefore, should have the impudence to pretend a real affection for her, ought not the woman to regard him […] as the worst of all enemies […] ?”

   “Since the 1980s, video games have widely been lambasted as a medium that is at best a waste of time and at worst a training ground for violence and aggression. Despite popularized media depictions of video games as corrupters of youth, to date, no study has definitively demonstrated any such link […]”