Darksteel Dwarf

Darksteel dwarves are more aggressive, hardcore types of dwarves that live around vols. They are often in conflict with the High Mountain Dwarves.
Darksteel dwarves tend to wear body and war paint, and some of them have many piercings and tattoos.
Darksteel dwarves refers to a cultural and ethnic group of dwarves, rather than a variant race of dwarf. They have the same physical characteristics as other dwarves, unlike the rare duergar dwarves who have gray skin and deeper underground holds. 
Darksteel also refers to the dwarf clan.
Also: Voldwarf or Dark Dwarf