Piles of knotted robot muscle depicted with bold black lines and parallel hatched shading lines.
This time the clean lines are broken up with some stippled shading, resembling stubble when it is used on the chin.
This time note the use of ink splattered on, maybe with an old tooth brush, also the cross hatching delivered with a much more relaxed style.
Background detail is created with a few brief squiggles...
This weathered detail on the face of Hammerstein uses cross-hatching to show wear and rough texture. Note stippling in the eye to differentiate it from the rest of the face.
Finally, a great use for crass-hatching; the rising fields of the artificial landscape, rising up in the distance behind the simply rendered trees.