Grunt Ultras are the highest ranked Grunts within they Covenant Military, clad in white/pearl colored armor. They can be seen commanding lower-class Grunts and even Special Operations Grunts. Unlike Elite Ultras, Ultra Grunts do not appear to have any immunity with their command yet the Elites or Brutes have complete command. Similar to Prophet Minors outranking Elite Shipmasters, Ultra Grunts are inferior in rank to even Elite Minors. These Grunts, like other Grunts, appear in groups and are very intelligent, making as few tactical errors as an Elite Major. They usually display even more bravery than SpecOps Grunt units, showing more often specialized attacks rather then generic military operations.