Ratfolk have a rich culture
A monster reference book focusing on humanoid monsters, designed as a resource for game masters to supplement their campaigns with more details about Orcs and Goblins and such. Lots of flavor text with backstories and trivia about the creatures. Apparently Lizardfolk only want to be left alone to live in peace, but the far more evil Serpentfolk worship a dead god. There are some surprising inclusions in the book like two undead races; I tend to think of the undead as their own category of monster and not as humanoids. Frost and Fire Giants are also included, and although Giants are humanoid I also think of them as a unique category of monster.
Given the popularity of the Horde among World of Warcraft players I am surprised that Dungeons & Dragons and its imitators have not explored more options of humanoid monsters as player character races. I know there are some options in supplemental works but they have never been part of the core game.
4