Chapter 664

Chapter 664 is called "Master Caesar Clown".

Cover Page
Color Spread: Luffy, Zoro, Sanji, Usopp, Chopper, Franky and Brook are riding the Mini Merry II whilst wearing mafia clothing and firing their weapons in a drive-by.

Short Summary
While Smoker, Tashigi, and the G-5 Marines try to determine the reason for the children's presence on the island, the Straw Hats interrogate Brownbeard and learn more about the history of Punk Hazard. Caesar Clown then uses one of the defeated centaurs as a test subject.

Chapter Notes

 * Caesar Clown is a Logia Devil Fruit user, who ate the Gasu Gasu no Mi and has a bounty of 300,000,000.
 * The outcome of Brownbeard and Basil Hawkins' battle is revealed.
 * The name of the Samurai from Wano is revealed to be Kinemon.
 * Usopp makes special buttons to more easily discern which person is in what body.
 * Brownbeard explains how Punk Hazard became a wasteland.
 * One of Dr. Vegapunk's failed experiments turned Punk Hazard into a poisonous wasteland, though it is later revealed to have been Caesar's fault.
 * According to Brownbeard, the centaurs, satyrs, and the harpy are revealed to have been originally humans who were altered by Law's ability.