Iron Dwarf

From wow.incgamers.com

Iron dwarf concept art

First encountered at the Howling Fjord, clues of the Iron Dwarves past are being unearthed. Etched with runes of power, and with lightning pulsing beneath their thick, metallic skin - they may represent the missing link between the dwarves and the legendary titans of myth. The malevolent Iron dwarves have taken umbrage at the Explorers' League interest in discovering the history of the Iron dwarves, and seem intent on destroying all artefacts connecting them to the shadowed recesses of history.