Yes, but a lot of these are anime and have assimilated their own look and tone for creatures in that particular style and its sub-genres. Again, this is about genre and using the word where it fits correctly. No Pokemon aren't kaiju, I'll grant you that. They're their own nomenclatu...
There are plenty of kaiju fighting games, but no one thought to make a kaiju beat-'em-up! Once that was done, we needed a new project so we pulled the kaiju fighting game concept off of the shelf and talked about it, ultimately deciding it would be more exciting ...