The Organization

We've been introduced to yet another Machine God in the latest chapter

(To those who don't know, I'm referring to G4 and G5 that appeared previously) And that brings up the question, who are they and why are they so obsessed with facing King in a battle? They don't seem to take interest in anything EXCEPT facing him, only taking hostages to ensure that King fights them for sure, but why do they ravage the whole city just to face King? I'm sure they're able to track him down, he's not hiding or something.