Like I said before....
For anybody that said the government doesn't know that King is a Lunarian but still give them 100 mil for anybody that have any information on him, let's think about this. You got Drake who is a spy of the Beast Pirates who constantly report to HQ but DOESN'T report King of all things? LOL. Big Mom knows about Lunarian, WB and Marco knows about Lunarian. Heck, King also have a 1.39 bounty poster that is stamped around the world and anybody could see it. As long as King have black wings, they could identify who is King right away. The only reason why the WG doesn't snatch King yet is because Kaido got his back. Without Kaido, King would easily get captured. Plus, they were experiments on Punk Hazard so WG have files on them too.