Dark Elves, or Drow as they often prefer, are a race of
elves that split off from the main breed of elves found in Fal'Addas. It isn't fully known why the original elves and the dark elves separated or why the drow settled in the Underrealm whilst their cousins settled in the
Falwood. What is known however is that both the elves of the Falwood and the elves of the Underrealm insist they were the original species and it is their cousins who have gone astray.
Drow tend to be similarly lithe and tall like their wood
elven relatives and they are as equally inclined towards magic. Their lifespans are extraordinarily long which has resulted in a belief of arrogance and superiority over other races. It is not uncommon for a dark elf to live for over one thousand years.
The dark elves primarily reside in a massive metropolitan city known only as the Undercity. They follow a strict religion which worships ancient "Elder Gods" and their people are guided by religious priests. The word of these priests goes without question among much of the populace lest they anger the Elder Gods.
Interestingly, drow can have various eye colors ranging the entire spectrum of color. Though there are exceptions certain eye colors designate status and place within society. Many of the priest caste have purple eyes, the nobility red, and the soldier caste blue. That isn't to say a noble bloodline might produce an heir with blue eyes or that a soldier may have green eyes but those are more rare rather than the rule.
Green-skinned and oppressed in the upperworld the goblins are rather common within the Underrealm. Living amongst many different tribes and settlements.
Grey
Dwarves or Duergar are distant cousins of surface Dwarves that - distrustful of the ways of non-dwarf species - and aghast at the opening of society towards such races descended into the depths of
Arethil. In the centuries since their departure, their skin grew pale and grey and their eyes gained a wholly white hue.
Their society revolves around the worship of the Fire God Zharr, who ensures the magma rivers - which act as the lifeblood for their civilization - remains flowing. A wholly insular community, Duergar never venture from their communes except to wage war on races they deem 'lesser' in status - that is, everyone that isn't a Duergar.
Their rules and laws are harsh and authoritarian and their communities are controlled by the Primal Order. A zealous group of warrior priests who enact the will of Zharr and lead the Duergar armies against other denizens of the Under Realm.