In the north, some Biomechanical born under the influence of the Furnace exhibit a greater degree of deviation and are thus given the epithet "Forged."
Their charred skin is cracked all over, revealing glowing, red-hot muscles like solidified lava covered in volcanic ash. It's hard to say whether the magma's heat changed them, or if this is their original form.
Forged Scorchers differ from their eastern counterparts only in that they spout molten iron instead of burning oil. To their victims, however, it makes no difference - one is as lethal as the other.