Original XIII

Original XIII (オリジナルXIII, Orijinaru Sātīn) is a general term for the 13 cyborgs who wear the machines that became the basis of the mass-produced Battle Dresses. Each of them are clones of "certain people" who had the highest affinity with the Battle Dresses in the past.

The seven odd-numbered Battle Dresses were assigned to protect the Administrators while the six even-numbered Battle Dresses were assigned to eliminate the surviving humans and maintaining public order. Unlike the mass-produced Battle Dresses, they use the best technology available and continue to evolve.