Chazrach
this species of stocky, reptilian humanoids had been conquered and enslaved by the Yuuzhan Vong centuries before the Battle of Yavin. Over the intervening years, the Chazrach were genetically culled for use as slaves. They were intensely loyal, and several Chazrach had earned social elevation to the warrior caste for their bravery in combat. Quite often, the Yuuzhan Vong sent in swarms of Chazrach as the first wave of a ground assault, as they did during the Battle of Dantooine. This allowed the Yuuzhan Vong to monitor the tactics of the enemy forces, thereby saving the strength of the Yuuzhan Vong warriors in the succeeding waves. Many members of the New Republic simply referred to these creatures as reptoids.