It is biological weapon of "Tachikaze" "appeared from the past" due to Stride. But, judging from its disproportionate amount of equipment with apparently heavier firepower compared to modern ones, it is considered that this individual is also one of those who had traveled from the distant future to the past. However, no record about this individual has been discovered, and the details are unknown. The only point people know about it is "Grado Gigant, having descended to modern times, is an outstanding force in battle", and in fact, this point is more than enough in the eyes of Tachikaze.
It is estimated that if this individual unleashed 100% of its weaponry, 80% of Dragon Empire's vast territory would be reduced to scorched earth. There is only one problem, that the current logistics line cannot support enough food for it to unleash 100% of its power. The upper reaches are studying if recruiting more food-supplying Carry Trilobites is necessary, to prepare for the next Stride.