If you have an arch nemesis, you have a singular enemy. “That super villain is my nemesis.” It is completely possible to have multiple enemies that are equally evil but not on the same level as an arch nemesis. It isn’t the big boss at the end of the game. It’s several mediocre bad guys that are coming at you all at once. “Those dudes are my nemesises.” Or should it be nemesi? Nemesaries? Nemenies?
