Which Godzilla villain is the most powerful?

Of all of Godzilla’s top contenders, averaging out every incarnation of each one, which Monster do you think is the most powerful?

Comparing all incarnations I would have to say King Ghidorah poses the greatest threat to Godzilla. Being his arch nemesis for most of their interactions, the unique abilities of Ghidorah being a weakness to Godzilla, and paired with the fact Godzilla often needs help to defeat him, Ghidorah gets my vote.

I've always found Ghidorah to be the most powerful and most formidable opponent, with Destoroyah being a close second.