Them

The undead, more commonly known as Them, are the series' primary antagonists. As of yet, no cause of Their infection has been revealed. The infection appears to be fast-acting, which is why it has spread all over the world in such short time-span. The name Them was given by Hisashi Igou for the fact that They can no longer be considered human.

Physical
They retain whatever and however They looked like before they turned. Additional facial appearances made some identification of Them. This consists of completely blank, white eyes and tight pupils, uncontrollable tongue movement, wide jaw distance and a pale green coloration. Bodily, They have the same clothing prior to their infection with a missing part of their clothes or skin, a noticeable sign of being bitten by other Them. They cannot feel pain and because of this, although they are undead they sitll breath or atleast slouch enough to apear beathing.

Intellectual
They have lost all form of intelligence, with an exception to basic actions such as walking, biting, moaning, crawling and, rarely, running. Although blood circulation has stopped, They can still make use of their sense of hearing to determine where Their prey would be. They could also form groups, which can be dangerous to living survivors as They can overwhelm them easily. They can determine whether anyone near Them are infected or not, which can possibly be why They don't attack their own kind.

Weaknesess
Although they have enhanced strangth and cannot be truly killed by whatever means through the torso and limbs, an attack at the head be it projectile, melee, or well placed hand to hand assaults will truely kill them. While they ignore the pain of strenuous activities and while they have increased strength, they have lost speed and coordination, only able to slowly walk to their prey and if they fall down thay have a very hard time getting up. They are also incapable of going down slopes, but can climb stairs. (Some may find that this goes against the "rules" of a zombie, for zombies can only stumble or crawl up stairs in original sources) While destroying their brain or spinal cord is the only true way to kill them, they appear to be more flammable than humans and appear to die easily when set on fire, this has proven to be very effectinve in destroying a medium to large group.