The Madthunder is a Triceratops-type Zoid created by the Helic Republic, as a counter to the Deathsaurer.
The Deathsaurer had proven to be more than a match for any previous Helic Zoid, capable of easily defeating the Ultrasaurus. As a result, the Republic developed a Zoid specifically to counter it. The heaviest Zoid ever created, the Mad Thunder was equipped with the thickest armour available. In order to protect it from the Deathsaurer's fearsome Charged Particle Cannon, the Zoid was also equipped with a special energy shield mounted in its head. This shield absorbed and deflected charged particle attacks, making it effectively immune to the Deathsaurer's main cannon.
As conventional weapons had proved to be ineffective against the Deathsaurer, the Helic designers equipped the Zoid with a pair of massive drills, capable of boring through even the thickest armour. The intention was that the Madthunder would simply ram the Deathsaurer and impale it. The Zoid was equipped with numerous secondary weapons so that it could fend off attacks by other Zoids while doing so.
In addition to its fearsome battlefield capabilities, the Madthunder was outfitted with a field command center and extensive communications and sensory capabilities.
My Zoids Motorized Madthunder. Stickered up, Fixed & 100% working :)