Like many threads on this site. IT's G1 focused. So the question is phrased G1ish. But please don't consider this limited to G1 if it's different in other shows If you feel it was different number in different media. Go ahead a say so, i'd love to hear it. How many Cybertronians were there on Cybertron before the war? How many are on the planet when they leave for Earth? So how many Autobots left with Prime on the Ark? What percentage of the Autouts do you think that is? How many were left behind or on other planets? Same for the Decepticons; How many followed Prime? How many were left on cybertron or other worlds? When the series is done with how many Cybertronian are on Cybertron? Or Earth or Nebulon or planet beast or any other place?