Gustavus and Friends
This isn’t your average Warforged, extremely old and seemingly cobbled together he may be one of the first prototypes ever created. Unlike most Warforged he is not a model of martial prowess. He tends to wear robes and is covered in Arcane runes, and rather than swing a sword he uses rods to channel his attacks or influences the battle to allow his comrades to be more devastating. Due to damage sustained he cannot speak in anything other than grinding metal and clanking cogs, though those that enter battle with him sometimes can catch an almost musical quality behind the cacophony.
Not much is known about him other than Goblin archeologists found him in a Dhakaani burial chamber, and he chose to enter the mists on the day of Mourning.