First is the machine wraith. Fairly simple dry brushing.
Then came the scrap thrall, which I tried to make look like it had been freshly assembled.

Primed with white Gesso.
Bleached Bone/White 50/50, then the red wash followed bybleached bone highlights for the human bits.
Boltgun Metal or Shining Gold plus a wash of Badab Black for the mechanicals. The big fist also has foundation Mechrite Red. I think it turned out nicely!