The Annihilator-class mobile fortress is a mobile fortress constructed and fielded by Pravus International. Constructed in secret by Manus Heavy Industries around the Arx of Ferox, the Annihilator-class mobile fortress was designed to serve as a land battleship that could bring enoromous amounts of firepower to bear upon a target, while also carrying a considerable force of Global Armaments' combat drones into battle. Extremely expansive, Pravus International built only one, choosing to do so in North America where its most vaulable assets were located.