The Fortress is the mobile seat of Tyrant's power. It is part stronghold, part city and part weapon. It rivals the size of Taa II, Galactus' massive ship.
Within the Fortress is many computerized systems filled with information. It is home to possibly thousands of Morg's robotic drones. The Fortress also holds Tyrant's power supplies, in the form of containment units, and has systems that can siphon the energies of living beings to power the ship and the drones.