An ancient behemoth which has not known war for hundreds of thousands of years. This mecha was built by the Precursors to act as their armoured support against the ents' largest and most dangerous monsters. It is armed with a handheld casava howitzer, which can fire in two modes. When in "Lance" mode, the particle beam created will have a diameter of 2m, erasing anything at a very considerable distance, likely able to hit objects up in the stratosphere. However, when in "Sword" mode, the particle beam will extend out on a significantly shorter ranged cone, which is able to hit a much larger area in front of the mecha with deadly high-speed radiation. Furthermore, its mobility was likely incredible, using powerful omnidirectional thrusters to zoom around the battlefield like a mad dingo. These capabilities require an enormous amount of power, which its antimatter reactor provides, a much larger version of Precursor antimatter cells.
Some say this piece of military hardware is definitely, absolutely, just a myth...