User blog comment:Eeneend/10: Humans?/@comment-1727652-20100214200120

How do we know it isn't just metal? Or iron? Or steel? Like the kind we use? I don't think it could be Exsidian, because whatever they are made out of would have to be a plentiful resource. If it nwas steel, it certainly couldn't be stainless steel, because in BLR, they were almost completely rusted over, except for Mata Nui, who was most likely made of protodermis. Metus' teeth were actually cracking...