I feel like a mugger trying to steal some lady's purse.

#19: Coincidences to get characters into trouble are great; coincidences to get them out of it are cheating.

See rule 12. That's the first thing that came to your mind. What other ways could someone be the opposite of Hercules? Instead of a weak girl, how about a weak man? Maybe the king Eurystheus, to whom he was enslaved. How about a strong woman, like Queen Hippolyta or Hera? Hercules was bisexual, so maybe his nemesis is…