What do you think qualifies as a Titan or Superspecies?
Reallyyy interesting question !! (*´∇`)ノ
This my personal interpretation of how this whole thing works (don't address that elephant, I didn't use a reference)
It's a bit of a "All titans are super-species, but not all super-species are titans" situation...
I love to think of the Hollow Earth as a parallel dimension or a distortion trapped inside the planet, which acts like a living being, maintaining a symbiotic relationship with all the animal species that feed on its energy. It doesn't follow the "rules" of the surface and the Axis Mundi is like a spacetime rift generated by the mere existence of Hollow Earth, like a pocket dimension.
The biggest difference between a simple super-species and a titan, I would say, is size and the ability to shape the environment around it to a greater or lesser extent -> Godzilla makes tsunamis, Behemoth expands the vegetation, Kong literally uses his surroundings as a weapon... do I even have to mention Shimo?













