It is one of the mechas designed to support the "Blau" series. Since "Polar Stern" had already been publicized and became the perfect mass-produced mecha of low cost, "Grosse Baer" was modified in another way. Its main armament is a particle convergence rifle that can shoot from faraway by linking itself to the energy tank directly.
It is protected by heavy armor. The four high-output boosters on its back and legs signify the birth of "Grosse Baer", a heavily armored mechanical soldier with performance comparable to the "Blau" series in terms of firepower, armor and mobility. Regrettably, its performance is accompanied by a high cost that makes it impossible to be mass-produced. Nevertheless, its status as a rare mecha attracts numerous maniacs, who are willing to buy it with an illegal price. This is something out of the imagination of its producer...