Super Hentai Tentacle Octoking starts living up to his name there in panel 4 as he does the 'unkillable monster looming out of the smoke and devastation'.

It really was going so well for him, except the monsters had a backup plan, complete with backup.

For the record Octoking is 300 meters tall, as is Ralphzilla at the moment. Both Badonkasaurus and Wreckasaurus are around 76 meters tall, Ralph's usual height (and the seeming base height of the kaiju of earth).

Ronni? She's about 2700 meters tall right now, standing on Japan's continental shelf and hoping she doesn't cause an earthquake.

Big hand. Giant, even.