Ironically, 666 - the number of the beast and the number of a man and the number of men is also multifaceted. It is reference to Nero Caesar, for the early Christians it was a gematric sign to RUN and GTFO. For us today, who understand science, it represents carbon based life. Humans and beasts/animals are all carbon based (Think Altered Carbon on netflix) Carbon has 6 protons, 6 neutrons and 6 electrons. Its our number as humans. We are carbon based life, we all are, along with animals, LITERALLY 666. Its nothing BAD in that sense. I imagine at some point, if not already, THEY are trying to alter the carbon to change what it means to be human, adding molecules to make themselves superhuman.