Lizardfolk

Monstrous humanoids come in many different shapes and sizes across various settings, editions and gamelines. One of the more universal are Lizardfolk - originally known as Lizardmen, but changed during the early 90's, probably for the same reason that Mermaids became Merfolk. As their name suggests, they are a race of humanoid lizards, though they often come in various forms. Generally, though, there's two traits they will have in common; they will be fought in a swamp or marsh, and they will be primitives.   In a world where even gnolls, orcs and goblins manage to cobble together steel weapons to fight with, lizardfolk are usually lucky to wield Stone Age gear like spears and clubs, instead of just ripping things to bits with their fangs and claws. Considering they live in swamps that tend to be home to things like crocodiles big enough to swallow them whole, giant carnivorous slugs, flowers that lay their seeds in your brain to turn you into a zombie propagatory aide, huge crayfish that can snap them in half, giant lumps of swamp muck that hate everything around them, and worse, this makes them either insanely badass or insanely stupid. Maybe a little of both.