A horde of cybernetically enhanced/created zombies.
Appearance and Nature Edit
Members of the horde resemble typical zombies but their limbs sport metal fibers, or hydraulics jotting out. It is unsure whether these keep the corpse mobile, or simply enhances their mobility, but these enhancements tend to make them more resistant to damage. They still sport the standard zombie weakness of damage to the brain.
They also have red optics, though they seem to be just for show.