Nemeses

Superman and Lex Luthor were arch nemeses in the comic book.

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

The superhero's nemeses were constantly coming up with new plans to defeat him.

The superhero and supervillain in the comic book were nemeses.

Her nemeses were her anxiety and perfectionism.

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.