The Marienkaefer is an unmanned Disorder Unit, roughly five times the size of an AC. The unit is armed with two laser cannons and two plasma cannons with one mounted on each side as weapon arms. It also has two machine guns mounted in the torso for close range defense. In order to lock on to this unit you need to equip a head with a bio sensor, although this isn't really necessary as they units large size and immobility makes it an easy target even without locking on. The unit was Zio Matrix's Mars Divisions trump card during the events of Armored Core 2.