edMonkey D. Dragon has a bounty of 1,500,000,000 beli on his head, making him the highest-bounty character in the entire world of One Piece.
This bounty was placed by the World Government after a string of rogue acts caused by Dragon and his followers. For instance, during the initial crimes, Dragon and his followers caused alarm by participating in the downfall of several major tyrants around the world. He has further caused extensive harm through the usage of his personel navy, the Revolutionary Army – a large force that works to break down the current corrupt world governmental system.
It is because of these actions that the World Government desires his capture, and have placed the one billion five hundred million beli bounty on his head.