Tell-tale signs (grayer hair, blotchy skin) are introduced to show that the Uruk39;hai are an inbred set of creatures, who are already starting to erode.

• 强兽人灰色的头发和满是污点的皮肤反映出它们是一种同系繁殖的生物，而且现在已经开始腐蚀了。