Debatable. I will go out on a limb and say ... 3 ! He was a truck . He was a monkey. He was a firetruck. Truly the answer to this question could be found right here within this wiki , just look up the different continuities and compare one version to the next and decide which is truly an original concept for the character and which were just simple re-designs. Here is a list - generation 1/2 beast wars/beast machines robots in disguise armada/energon/cybertron and of course the current or the ' new school ' of the animated series / prime , and last but certainly not least , the affectionately named ' Bayformers '