New Monsterverse Titan

Dogora

the space jellyfish is cool

I know I've said it before, but Megalon would fit perfectly with the established MonsterVerse lore.

My main choice would probably be Gigan, since they've already established the idea of alien titans with Ghidorah and they made a couple of hints of aliens in GvK.

My other choice would probably be Hedorah, I feel like an updated version of that character could be genuinely cool and scary as they could really emphasize how gross it is and how disturbing they way it kills people is. Also due to the fact that Godzilla vs Hedorah's director, Yoshimitsu Banno, was responsible for starting the MonsterVerse and the fact that the initial pitch which eventually became G'14 was meant to be a spiritual successor to Godzilla vs Hedorah, it would be a great tribute to him.

Gigan would definitely be cool, and Hedorah. I don't know about Megalon, but he could be a hollow earth character. I also think Biollante would be cool. I really want a monsterverse Anguirus, but if the skeleton seen in KOTM was really his that seems unlikely.

Skeleturtle is needed

QuinnTKO

Megalon could work because his original origin story was that he was worshiped as a god by an ancient underground civilization. The MonsterVerse already introduced the Hollow Earth and the idea that ancient civilizations worshiped the titans as gods, so I feel like Megalon could fit right in.

Anguirus  the species is there as they showed a clearly identifiable skeleton outside Big Gs temple in KOTM.  to be honest i kinda want to see All the Toho monsters make appearances even if there just cameos "living" ones not  skeletons or cave paintings.  as for abilities  Anguirus could be giving a pulse of some sort not emp like muto but i dunno maybe a nerfed "nuclear pulse" like what Gojiras had in some of his Toho movies