Nemeses

Her lack of self-control when it came to spending was her financial nemeses.

The main character's nemeses in the movie were the gang of thieves who had taken over her neighborhood.

The rising sea levels and extreme weather conditions are the nemeses of climate change activists.

The detective and his nemeses engaged in a cat-and-mouse game that lasted for years.

The nemeses of the detective were always trying to outsmart him.

The hero's nemeses were the villains who sought to destroy the city.