Queen of locusts ordered the locust to begin making tunnels to the tyranors hive to begin the assault on them So they use Corpsers to make the tunnels Corpsers were spider-like creatures. They had four eyes, eight front legs and twenty hind legs. The Corpsers were oviparous, reproducing by laying eggs and born with only four front legs. Aside from the Riftworms, the Corpsers were responsible for many of the tunnels in the Hollow, as their legs allowed them to dig through the rock and soil. The Locust later enslaved Corpsers as a means of transportation and opening emergence holes on the surface, allowing the Locust to breach and attack
The gears of war wiki
