The Gigantor-class battle droid was an ultra-heavy battle droid, and was one of the largest battle droids ever built, which was designed and produced by Galactic Mechanical Manufacturing Corporation (a subsidiary of Galactic Industries) with terrorfying an enemy in mind. Gigantor was an exotic one-off series from the Human-sized battle droids typically made by GMMC. Gigantor was designed to be able to combat enemy vehicles and large numbers of enemy infantry and to be able to intimidate enemies with its huge height and heavy weaponry into not attacking, and to be able to quickly defeat anyone foolish enough to try attacking it.