"Honor Guard Councilor" is a fan-derived term describing a strange Sangheili that serves as the final opponent in the Halo 2 Campaign level Gravemind. He appears to be wearing the gauntlets and greaves of an Honor Guard Ultra, with the helmet of either a Sangheili High Councilor, an Ultra Sangheili, or an Honor Guard Sangheili. The Sangheili's appearance can be attributed to a flaw in the game's programming due to a programmer typing incorrect coding; it was meant to be a Zealot.