Following on from this I dry-brushed Ultron-13 with (more) "Citadel" Ironbreaker, and subsequently 'picked out' his small internal nuclear furnace using a combination of "Vallejo" Heavy Red and the "Citadel" glaze Bloodletter. As a final touch, I tried to tidy up the area around the homicidal robot's mouth and eyes with a thin line of "Citadel" Ironbreaker.
The healing steel! Make a bold incision and throw Ev's diseased organs in the bucket!
Second sexiest robot butt ever (after Bender)? Change my mind!