World of Wyvren
When the Dark elves lost to the Fernalian elves after their creation, part of the Dark elf population was kept with the Elves of Fer n’Al. The clerics of the Skygods attempted to undo the corruption of Molizar but they could not, so the Elves did what they could do. They gave them a city underground for them to do as they wished. This city was Borfijor, and it was modeled after a typical Elven settlement on the surface. It is built into the ceiling of a massive cavern, consisting of platforms built in and among the stalactites, complete with bridges and magical elevators. Within Borfijor the Dark elves are free to use their drive and passion imparted to them by Molizar to better their lives. All Dark elves trained in Borfijor are masters of their craft. In OOG terms, all Dark elves from this city would be single class characters unless their craft was to be an exemplar of a prestige class. Very few, if any, Dark elves from Borfijor are dual classed. They also have hair that they dye to various colors that correspond to their chosen craft to which they perfect to attempt to be as different as possible from their wicked cousins.