Fortresses (Mazinger)
Throughout the Mazinger saga, the evil enemy forces used several large flying and submarine ships called Fortresses in addition to their monsters to attack Mazinger Z, Great Mazinger, Grendizer, and Mazinkaiser. They were armed with powerful weapons and their primary goal besides direct aggression was to carry the monsters and infantries of both Dr. Hell, The Mikene Empire, and The Vega Empire.
Read more about Fortresses (Mazinger): Submarine Fortress Salude, Aerial Fortress Gool, Submarine Fortress Bood, Aerial Fortress Navalon, Fortress Mikelos, Fortress Demonika, Motherburn, Sentou Bokokan, Queen Spazer