- NEMESIS
- Unbeatable opponent
- Lifelong foe
- Formidable challenger
- Goddess of vengeance
- Inevitable cause of downfall
- The Joker, to Batman
- One who's tough to top
- Archenemy
- Moriarty, to Holmes
- Superman, to Lex Luthor
- Unbeatable scourge
- Subtitle of the tenth "Star Trek" movie
- Bugs, to Elmer
- Unbeatable foe
- Moby Dick, to Ahab
- Serious foe
- Waterloo
- Usually successful opponent
- Draco Malfoy, to Harry Potter
- Bitter enemy
- Seemingly unbeatable foe
- Retribution personified
- Source of harm
- Vengeance deified
- Difficult opponent
- Unconquerable foe
- Undoing
- Wellington, to Napoleon
- Antonym of "ally"
- Formidable opponent
- Retributive justice.
- Avenger.
- Retribution.
- Goddess of retribution.
- Goddess who saw that men got their just deserts.
- Inflicter of retribution.
- An avenging power.
- Greek goddess.
- Just punishment.
- Agent of vengeance.
- Unbeatable rival
- Bane
- Bête noire's relative
- Goddess of righteous anger
- 1989 Isaac Asimov book
- Batman, to the Joker
- Formidable foe
- Batman, to the Riddler
- Star Trek: ___
- 2002's "Star Trek: ___"
- Ruin
- Macduff, to Macbeth
- Very tough thing to lick
- Greek goddess of vengeance
- Jerry, to Tom, in cartoons
- Downfall
- Archrival
- Lex Luthor, to Superman
- Ness vis- -vis Capone
- Wonder Woman, to Ares
- Harry Potter, to Lord Voldemort
- Adversary
- Bitter foe
- Yankees, to the Red Sox
- Formidable rival
- Sworn enemy
- Potter, to Voldemort
- A good superhero needs one
