The Interdimensional Traveler: A Full Body Character Design - ZBrush Creature Design: Creating Dynamic Concept Imagery for Film and Games - page 120

internal structure. Using the Move brush, I pull the thoracic arch out farther to create the sharp plane break
seen in Figure 3-19 . This is one of those jagged, aggressive shapes that both pulls the physiology away from
human and subconsciously suggests aggression, or forward thrust, in the figure's stance.
Figure 3-19: Here the shape of the ribs has been altered to give them more distinct character.