Thread:ShockwaveDude120/@comment-24439896-20190602161157/@comment-24097388-20190602223716

So were the other monsters.

Cthulhu has a description, but again, it's based on one of the many forms he's known for, which has been intepreted by many artists over the years. So it's not like he has a clearly defined form.

Ghidorah isn't treated as something beyond what the human mind can comprehend though. It's clearly stated in the movie that he's an extraterrestrial dragon that's been living on Earth for millions of years and that's about it. Ghidorah regenerating his head is really just nothing more than him possessing regenerative powers.