From Halopedia, the Halo wiki
Ironclad Mgalekgolo are one of the most infamous units within the Ironclad pack. They were deployed during the Second Ark Conflict during a particular battle known as Occatio Blitz, in which four Ironclad Hunters escorted a Banished tank crew across treacherous terrain. The convoy made its way to human lines and successfully broke them, seizing the vital resources for Let 'Volir. Ironclad Mgalekgolo continue to be deployed by the Banished commanders across all campaign fronts.
The Ironclad Hunters are classed as anti-vehicle, and performs well against vehicles and not against infantry, buildings and aircraft. If this unit is in fatal/sever condition, if this unit is guarding another unit while it's be healed, this unit will also receive healing regardless if the unit it's guarding is full health or not.
List of appearances