One Piece: Crew of Pirate Kings

Finding himself in the world of pirates, Wexford gained the ability to clone the Pirate Kings of the parallel worlds.
Garp, who has dominated the four seas; Katakuri, who led the Charlotte family to rise to power; and the king of the underground world, Doflamingo.
Thanks to his ability, a number of parallel worlds Pirate Kings, gathered under the pirate flag of Wexford.