A race of orangutan-like humanoids , they have a primitive, violent society with a number of warring tribes. They occupy the “savage humanoid” slot often taken by lizardmen, sanguan, bullywugs, etc in other worlds. They have not yet discovered domestication of animals, but some fear they are close, and a stroke of luck or a hand of intervention could make them much more dangerous. They brachiate on the underside of clouds in The Stack, and are able climbers on vines that grow between layers and bits of root matter.
The Armstriders only rarely come into contact with humanoids, who only rarely stray into the dangerous jungle of The Stack