Saviors of Rhillau
Quite possibly the second oldest civilization in the world. The dwarves keep mostly to themselves, in their mountainous homes. While not necessarily xenophobic, their natural disinclination to travel, combined with the remoteness of their civilization, means that the dwarves do not often interact with other races. This makes them slightly distrustful of people from other races, in general. The only exception to this is for gnomes, whose society is interwoven with the dwarves.
The dwarves, being generally unskilled in arcane magics on the whole, have instead developed slightly more advanced feats of engineering and science in their long existence. They alone hold the secrets of black powder and firearms, and they are loathe to teach those secrets to outsiders. Even gnomes are only allowed to carry such weapons in dwarven lands, and are not given the knowledge of their inner workings.
ANY CLASS OR ARCHETYPE THAT USES FIREARMS CAN ONLY BE TAKEN BY A DWARF
The dwarven political system is a feudal matriarchy. The current queen is descended of the first queen to unite the scattered dwarven tribes and bring them under her rule.