For Some, its orcs. Others, its goblins, or draconians, or gnolls, etc.
I'm looking for something different.
PREMISE: An industrial city/metropolis surrounded by a mostly barren waste. People have fled to the safety of cities, even normally evil races have begun to live in these urban sprawls. Safe transport is done by rail, and its dangerous to leave the city area.
What I need is a good race/monster that can keep a fairly industrial culture confined to its cities. It needs the following:
1.) Prolific. Lots of them.
2.) Able to survive in a non-flourishling land, like in mountains.
3.) Temperate if possible, but I'm open to Cold/Hot.
4.) Not a Goblinoid/Orc
5.) Weak enough to fill a role normally filled by orcs, but with enough variety/advancement to challenge higher level characters.
6.) Not Undead/Demonic, for campaign reasons.