User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-6050823-20140107011913/@comment-11112316-20140110042731

I'll concede that anything in the deep ocean would probably be spared from the Fatalis, but anythign on land seems like fair game; and who knows, maybe all the talk about the flames of Fatalis being hellfire is true, and he could reduce once humid areas to arid wasteland? Things in the ocean still depend at least partially on the environment of the surface area, and if the Fatalis can turn Schrade into what is essentially hell, I think the Fatalis could still have a considerable ripple-effect on the deep ocean dwellers.

On the subject of a creature who could potentially drive off or be worse than the Fatalis... Don't you think that sounds just a might bit implausible, considering just how powerful the Fatalis is to begin with? If such a creature existed, why isn't THAT creature in legends and folklore? Only creatures I can see who could give the default Fatalis trouble are Alatreon, Dire MIralis, and Dhisufiroa... but then you see the G-rank Fatalis, or the Crimson/White ones, and even those creatures could be overcome.