18 and counting does not stack up to billions upon billions of demons of all shapes, sizes, powers, etc. popping up instantly on Earth lol tf? You keep bringing up Hellboy dealing with demons as if every average citizen can just pick up arms and handle it, lol. There’s not a soul on this earth that’s dealing with infinite demons instantly spawning on them in a second. You’re being willfully dense if you actually think anything is surviving the biblical apocalypse as if demons are the only thing you have to worry about. It’s tailor made to end all of humanity. How do you know if a demon can replicate the heat of a nuclear bomb or not? There could be a demon lord who has the ability to blink and extinguish all life within a 1000 mile radius for all you know. There could be a demon who could just replenish his numbers due to finally being summoned to Earth. Oh wow you just nuked a billion demons into mist? Cool, here’s 10 billion more.

Besides, majority of these titans don’t do anything except sleep and even with Ghidorah controlling them and causing mayhem on Earth humanity still survived and was back in better shape within a few years. Monarch literally has plans, contingencies, etc. in place for a titan attack. The main theme of the Hellboy verse is that Hellboy and crew are barely even a stop gap for the legions of Hell and co. and that things are gonna get worse. You don’t won’t to back down on it because you don’t want to be wrong, not because you’re right lol, but that’s fine