Lights of Sanghelios

Honor Guard Ultra is a Covenant Sangheili rank. This rank commands the 'lower' Honor Guard Elites that protect the High Prophets. This rank is still equal to the rank of Brute Honor Guard since the Brute Honour Guard only has one rank within it. They are part of a special unit called the Light of Sanghelios.

They are likely more skilled than their subordinates, with many years of experience in the Covenant Honour Guard, which is particularly impressive considering the prodigious combat abilities of any in the Honour Guard.

Class
These Honour Guard Elites sport the same ornate armour, as the rest of the Honour Guard, with the exception that their under armour they wear is white instead of crimson red. This colour is consistent with the Ultra Elites of the regular Covenant army, hence their title. Honor guard ultras rank is also equevelant to a field master as both ranks have to undergo special training and were once the same rank (elite ultra) but the honor guards were single handedly chosen by the high prophets themselves. After being stripped of their armour, some dified the brutes and kept some of their armour and took the role of an honor guard ultra by keeping their shoulder plates and wearing their old elite ultra armour.

Combat
Honour Guard Ultras have never been directly seen in combat. A lot of players believe that one appears at the end of the level Gravemind but this Elite is actually the glitch known as the "Honor Guard Councilor", although the Elite will sometimes spawn without a Councillor helmet.

Five Honour Guard Ultras are seen in the cinematic of Sacred Icon when they, along with regular Elite Honor Guards are stripped of their position, giving it up for the new Brute Honor Guards. One is seen giving his helmet to a Brute.

In addition, three Honour Guard Ultras are seen to be killed fighting the Brutes around the middle of the level Gravemind (Level). They wear Honour Guard armour but without helmets, as they no longer held that position when they were killed.