good to see fellow ttrpg people on here. i usually play more minimalist indie ttrpgs, that dont have things like "poison effects" or "damage resistance." if i had to pick a traditional rpg monster that i find cool, its the golem, and other constructs. its interesting to think about how its powered and programed, and you can get creative with what their pre-programed goals are and how they carry them out. skeletons are also cool. whats cooler than a person with no meat who wants to kill you? very few things.

more often than not, i think other people are the most interesting obstacle to throw at a rpg group. its not a pack of wild animals that just attack and then maybe flee, they arent mindless rabble that constantly spams their one best attack. theyre thinking feeling actors just like PCs, so there is so much room for dynamism in interacting with enemy people. if youre playing things right, they are going to have their own wants and needs, and want to stay alive as much as the PCs do. opens the floor for interesting conflict that isnt just "i kill the monsters"