(WORK IN PROGRESS)
Upon weeks of careful study from afar i have now concluded my research on the Aggromantulas horde and its Queen.
It appears that the Aggromantulas is a passive species of Grimm despite their horrifying appearance. They do not actively seek out prey like most mammal Grimm. This still doesn't mean they aren't incredibly hostile however, they simply use a much more slow and methodical way of finding humans.
They are primarily trappers and ambushers. There main weapons are obviously there spiked bone fragments and immense biting power, however they usually wait until their target is unguarded or otherwise incapacitated. But