Nemeses

The hero's tragic fate was sealed when he incurred the wrath of the nemeses.

The thief's greed eventually became his nemeses and led to his capture.

The princess and the evil queen were nemeses in the fairy tale.

Harry Potter and Voldemort were nemeses in the wizarding world.

King Agamemnon's arrogance led to his downfall at the hands of the nemeses.

Sherlock Holmes and Professor Moriarty were nemeses in the detective story.