Demon Horde

The Demon Horde (デモン ホード, Demon Hoodo) is a massive army of various pirates and other lawbreakers who have fallen under the umbrella of The Daimaō Pirates, and specifically that of their captain, Shanxus. Recruits for the Demon Horde come from all over, though they are mostly taken from destroyed organizations, especially those whose heads have been captured or imprisoned in some fashion. The Horde also recruited heavily from the Island of Misfit Minions, to the point that they left the remaining pickings rather bare-bone for anyone who desired to recruit after them. They were formed and exist for one purposes: to cause as much chaos and disorder for pirate crews within the expanse of the New World, so that their Supreme Leader will find it that much easier to hunt down the One Piece, so as to destroy it.

They first appear in Grand Voyage shortly after the conclusion of the infamous Strong War, in which Shanxus and his crew finally arrive in the New World and prepare to rally their forces. Following their own entry into the New World, the Marimo Pirates discover the Demon Horde has gone wild, attacking and ravaging anyone who does not swear fealty to Shanxus or his crew.

They are the titular antagonists of the Demon Horde Saga, the second-to-last saga in the series.