Drow

The brutal, sadistic, and what most would call kinky drow are epic biomancy humanoids and one of the elfin races.

Biology

By elfin low standers the drow are fairly diverse thanks to their sexual dimorphism and the fact that they come in two types, the baseline drow and the less common drider. They have all the elfin traits as well traits their own.
Drow
The female stand at about 1.524m (5ft), have solid black skin (not the human skin color), pure white hair and eyes, and have red hourglass like marks on their backs and on the backs of their hands. While the males on the other hand stand around 0.9144m(3ft) tall, has light brown skin (not the human color), pure white eyes, and have dark brown (not the human color) hourglass like marks on their back and the back of their hands, they also have dark brown hair (not the human color).

Spider Climb: Drow are able to climb surfaces in much of the same way spiders can.

Venomous Bite: Drow have a venomous bite that strangely seems to be the same venom use by black widow spiders but just in a larger dose.  

Web: The hourglasses on the back of drow hands are in fact special glands that can produce silk much like that of a spider silk. They can use this web for all kind of things, from lines that can be used for ropes to tire up or to swing on, to nets, or even as small quick shots.

Speak To Spiders: Drow can speak to and understand all forms of spider lifeforms.

Sadomasochism:  Drow are sadomasochists by nature meaning that they both have a high pain tolerance and that pain can’t harm their morale, but it can improve it.

Night Vision: Drow can see in the dark as well as in light.

Toxic Resistance: Drow are resistance to all forms of organic toxics, poisons, and venoms.

Drider
From the waist up drider look like drow, but from the waist down they look as if they are a giant black widow. Driders come about from either being born drider, which is rare, or even rarer being transforming from a normal drow into a drider, though a form of poorly understood metamorphosis. Driders are stronger and faster than normal drow and more importantly don’t have the low fertility other elfin do, making drider both the leaders of drow society as well the parents of a good deal of drow. For once a drider is able to have children they spend a good deal of their pregnant if they are female or impregnating females if they are male. Driders can be born to both normal drow parents and drider parents, they have all of the traits of the drow plus the following.

Electrical Blast: Driders can fire blasts of electricity from their hands at will.

Electrical Resistance: Driders are resistance to electrical damage.

Acid Spit: Driders can spit a line of acid as breath weapon, the acid is strong enough to eat though leather.

Drow Society

The drow civilizations are known by all for their cruel, and fetish, nature. In other to understand there brutal mind set not only must you know the culture traits all elfin societies share but you must know the following as well.

Underground: Drow normally build their cities in giant underground networks, this means that their food supply is mostly what they can grow underground and a few things they trade from the few that willingly deals with them.

Matriarchy: Drow believe that the strongest should rule and sense drow females are larger and stronger then drow males this means their civilizations are highly matriarchal. Of course sense driders are stronger than normal drow this means that the male driders are higher rank than normal female drow.

Slavery:  It well know that drow love to enslave other sapient races, especially other elfin and spider races. They believe it is their right as the one true elfin race to rule over all others, and this belief combine with their sadomasochism nature means that slaves rarely last long. So they are almost constantly raiding other races to get new slaves, making them highly dislike by others.
BDSM Culture: Due to drow sadomasochism nature their culture looks to be highly BDSM in nature to the extent that many wonder if the BDSM subculture was in fact base on their culture. This can be seen every with in drow society, from their clothes, to their architecture, and of course with the way they act to one another.

Obsessed With Spiders: Besides BDSM and slavery the other thing that is a chief characteristic is their love of spiders, all their mascots are spiders, most of their children cartoons are based on spiders, they have spiders ranging from normal spider size to the size of an elephant filling the role of every type of domesticated animals including livestock, they even have species of spider that they breed for sole purpose of using their venom to make alcohol. And of course, their gods are even said to take the form of spiders.

Relations With Elves: Like all elfin the drow for the longest time have believe they were the most like the true elves of old. In fact they claim that they were once the rulers of the elf empire before the ancestors of the other elfin overthrew them and destroy their empire by pure incompetent, so when the elves return they were very surprise to say the least. After the meeting between them the elves came away believing that the drow came from clone elves that were created to be prostitutes or assassins, or both. Sense then the drow leaders have done their best to hide the truth of the elves return from the rest of their people out of fear of what would happen if they learn the truth. So far thanks to the elves wanting little to do with them and most other elfin this has been successful but it as the elves keep explaining their influence it is only matter of time till the truth is out.