The Type 9x Mobile Infantry units are not based on any known mythological or historical figure, but instead are intelligent machines used in futuristic armies or police forces.
Shin Megami Tensei
"The Type 93 Mobile Infantry, Model G. A robotic weapon developed under General Gotou as a demon-suppression unit. It also sees use to deter those of extremist cults. Because it walks on two legs, it is a bit fragile."
—T93G, Shin Megami Tensei A-Mode DDS Dictionary
"The police version of the Type 95, Model C. This model was used by police as a riot-suppression unit. It is somewhat under-equipped for combating demons."
—T95C-P, Shin Megami Tensei A-Mode DDS Dictionary
"An armored demon suppression robot. Its official name is the Type 95 Mobile Infantry, Model D."