Yonkos
Yonkos, plural of Yonko, is a term from Eiichiro Oda’s One Piece that designates the Four Emperors of the Sea. In-universe, Yonko are the four most powerful pirates in the world, ruling large swaths of the New World and exerting disproportionate influence over maritime politics, pirate fleets, and trading routes. Their power is such that many crews avoid direct conflict with them and even the World Government treats their actions as major global concerns. The designation signals not only military strength but also control over territory, resources, and a vast network of alliances and subordinates.
Yonko commands are backed by massive fleets, highly capable lieutenants, and substanial bounties. They shape piracy
Historically, the group has included Shanks, Kaido, Charlotte Linlin (Big Mom), and Marshall D. Teach (Blackbeard).