Not quite the same, as in exterminating humanity, but the look. Human but obviously robotic if not alien. What do you guys think? I also think it would be cool if the EXO had a back story like this. Maybe EXO are outcasts, rouges, unliked because of an incident similar to this? Perhaps some humans became cyborgs and upgraded themselves more and more, one of them, or a group of them, going too far. This group or one being eventually getting all of them to upgrade and corrupting them to rebel? Eventually humanity and the awoken defeat them, and allow the servants and soldiers to live. Something like that.