Thrall Herder
this was a species of immense, armored creatures used by the Yuuzhan Vong to control their slave populations. The 9.5-meter-long thrall herder had a dome-shaped carapace that served as protection, and it moved about on thousands of cilia-like legs. These creatures could also spit a glob of pure plasma across a great distance, an action that could be used for attack of defense. When ridden into battle by a Yuuzhan Vong warrior, the thrall herder used a specialized surge-coral device to control up to 600 enslaved beings, forcing them to fight as the first wave of a ground assault. In this way, the Yuuzhan Vong could save their own warriors - as well as Chazrach warriors - for the final assault.