Honour Guard Elite

The Elite Honour Guardsmen was a Covenant position, later used by the Covenant Separatists. They serve as elite protectors to the High Council and Prophets, particulary the Hierarchs. After the assassination of the High Prophet of Regret, the Brutes replaced the Elites as the new Honor Guardsmen.

They are known to be the most skilled of all Elite warriors and selected for the duty of protecting the High Prophets and other high ranking officials in the Covenant High Council. It seems this rank is equivalent to the Ultra Elites and slightly below Arbiter.

Halo 2
Honor Guards are first seen in the level, the Heretic, they are seen as protectors of the High Council. In the missions, Delta Halo and Regret, they fight the player and remaining marines with their Energy Swords. In the temples, Honor Guards are seen there and fight alongside the other Covenant forces with Plasma Rifles and Energy Swords. They finally appear in the mission, Gravemind, where they spawn in several locations and fight the player as well as fighting and slaughtering Brutes, Jackals and Drones.

Halo: Wars
In Halo Wars, Honor Guards are seen guarding the High Prophet of Regret in the campaign. Towards the end of the campaign where Sergeant John Forge and the SPARTANs arrive to rescue Professor Anders, Honor Guards charge at the SPARTANs with the intentions of killing them but are eliminated. In Multiplayer modes of Halo Wars, if Regret as your leader, Honor Guard is a unique unit which are used as infantry units as well as Regret's guards who are capable of killing and destroying with their swords. Their upgrades are: Cloak and Personal Shield.