Anaconda is a pretty tough fighter and her bones are lined with adamantium. This means that her level of super strength is enough to damage King Ghidorah…although you may have suspected that from her brief fight against Thor. King Ghidorah does have lasers to even the odds, but Anaconda can stretch her limbs so it’ll be easy to hit such a big object. I think King Ghidorah would ultimately go down first here. Anaconda wins.