The original theory on this Gargo-Fluffy cryptid was that they were a bonded split personality, two personalities in one body. As such, I point to the completely binding precedents of both Jekyl/Hyde and the entire spectrum of Hulks that, same body notwithstanding, the two personalities can be accompanied with the manifestation of completely different morphological markers, be that size, texture or color. So, the fact that Gargon667 is a handsome green Orc does not mean that Fluffy must be green; they very well could be an ugly pink bunny.