The Gigantic Rex Class Star Dreadnought Starship, otherwise known as the "Rex Destroyer" was an iconic class of warships designed by Supreme President Phil Hall and built by Kuat Drive Yards. The Core-class Dreadnought Starship, along with GAC troops, represented the might of the Core military throughout the galaxy. As it was the most powerful ship when it was created, any starship would have tough time trying to destroy it, but a lone fight, it was impossible, if were not destroyed it would have to retreat because of the massive firepower of the Rex Destroyer.