Yonko

The Yonko ( 四皇 -  Yonkō)   are the four most notorious and most powerful pirate captains in the world, but are neither allies nor enemies of one another, preferring to remain autonomous under most circumstances. These four individually reside within the second half of the Grand Line (known as the New World), exerting impressive influence and control over dozens of other pirate crews and self-governing islands.