Encountered only in The Frozen Wilds, these are regular machines augmented by HEPHAESTUS through unspecified means after it took control of the Caldera facility. Stronger than Corrupted machines, enhanced with higher elemental resistance, especially shock, and immune to being overridden, without any inherent weakness. Since they are products of HEPHAESTUS, they aren't hostile towards normal machines and will work together with them to take down humans.