Fan Casting Depraved Dwarf in Sort by Tropes

The Depraved Dwarf is a pint-sized bucket of malice. He (and it's pretty much always a he) is either a sadistic psychopath, a twisted rapist (presumably of the Mickey-slipping variety rather than the hold-them-down type), or at the very least a violent, cold-blooded criminal. They tend to show up when the hero has been rendered helpless. Often, expect giggling. Can go hand in hand with The Napoleon, if the Depraved Dwarf's misanthropy is implied to be a response — albeit a misdirected one — to discrimination and abuse faced as a result of their short stature.