Dharma

Dharma (ダーマ) is a real robot that is used by the Japanese army, which first appeared in All-Star Taimanin.

Background
It is a powered suit robot officially adopted by the Japanese Self-Defense Forces. As its name suggests, it is a round powered suit like Dharma. The total height is about 3 meters. It has a machine gun on its right arm, a cutter on its left arm, and a launcher on its back.