The "Worst Generation" refers to a group of eleven notorious pirates in the anime and manga series One Piece. This generation is known for their significant impact on the world, challenging the established order and creating chaos in the Grand Line. The members include prominent figures like Monkey D. Luffy, Roronoa Zoro, and Eustass Kid. These pirates gained notoriety for their actions, such as defeating powerful foes and earning large bounties. Their rise has led to increased tensions among the World Government, the Marines, and other pirate crews, making them key players in the ongoing conflict within the series.