I would say that many Mind Flayer villains are quite interesting because they are Mind Flayers.
Alexandrian had some interesting thoughts about what to avoid when running rival party in his Call of the Netherdeep -review (includes spoilers about the adventure): https://thealexandrian.net/wordpress/48216/roleplaying-games/review-call-of-the-netherdeep
Trumble
joined 3 months ago
Zoo and museum tickets