From what it looks like, Gorgon looks humanoid.
I’m not saying that it is a Basilisk soldier but, what if… It’s a monster’s/Shear’s way of using corpses that lie dead on the ground? This includes human corpses. What if Shear recycled those corpses, and these were the result of the corpses. The parasites that are eating the corpses, were also dragged in, evolving too. Not much of a bright idea but hey! Take it as you like.