While stronger Horrors, especially those evolved to have unique forms and powers, tend to live and hunt alone when they make it into the human world, the weaker ones with no desire to hunt on their own and dependent on others to feed tend to band together and form small community pockets, as revealed in "Garo: Makai Retsuden". Each of these communities have their own hideouts called "forts", despite having no fortifications of any kind. The forts have cages in which humans are kept as livestock to be consumed later. These Horrors are weak enough that a lone Makai Knight prove more than enough to wipe a dozen or two of them out within minutes.