Like Luffy Only the Most pure-hearted One Piece Pirates

 For more than twenty years, One Piece has stood at the top of the shonen anime mountain because the series tells a beautifully detailed and emotional story that centers around Monkey D. Luffy and the Straw Hat Pirates. Luffy's dream is to become the new Pirate King, and in order to do that, he needs to reach the island of Laugh Tale and acquire the One Piece treasure.

Gol D. Roger is the only person to be universally considered the Pirate King, and he earned the title after reaching Laugh Tale. An entire generation of pirates has gone out to take the title for themselves. There are a few pirates who are worthy of becoming the next Pirate King, like Luffy and Shanks, but there are others who are definitely not worthy.

To this day, many fans consider Doflamingo to be the best villain in One Piece, but that does not mean he deserves to be the next Pirate King. He is the captain of the Donquixote Pirates, and prior to becoming a Warlord of the Sea, he had amassed a bounty of 340 million Berries.

Doflamingo ruled the Kingdom of Dressrosa like a tyrant for a decade, and if he were to acquire the One Piece and become Pirate King, he would undoubtedly treat the rest of the world the same way, especially since his goal is to destroy the world that the World Nobles rule over.

Crocodile is a former Warlord, and he served as the main villain of the Alabasta Saga. His current bounty stands at just over 1.9 billion Berries, and he founded Cross Guild with Dracule Mihawk. Their organization places bounties on Marines.

At one point, Crocodile dreamed about becoming Pirate King like Luffy, but that all changed when he decided power was more important. He intentionally tried to plunge Alabasta into a civil war so that he could come to power, and he wanted the ancient weapon Pluton which was said to be hidden in the Kingdom. He did not care how many people needed to die for this to happen.

Arlong wanted to conquer East Blue, and he was Luffy's first real test. He was part of the Sun Pirates, and after being freed from Impel Down, he created his own crew. His viciousness earned him a 20 million Berry bounty.

Arlong considers humans inferior and has no problem killing them. He killed Nami's adopted mother right in front of her and then forced her to draw maps for him. He also made her steal money so she could pay for her village's freedom, but Arlong had no intention of fulfilling the deal. Someone that cruel does not deserve to be Pirate King.

Hody Jones was inspired by Arlong, which is why he created the New Fish-Man Pirates. He despised humans and wished to create a world where fish-men ruled as the superior race. Hody may have not had a bounty, but he did plan to attack the World Government with an army of 100,000.

Luffy was able to beat him, but during their final battle, Hody attempted to destroy Fish-Man Island because he would have rather seen his people dead than coexist with humans. Roger never thought this way, making Hody unworthy of his legacy.

Don Kreig is the admiral of the Krieg Pirates, and he rose to infamy in East Blue, where he amassed a 17 million Berry bounty. He took his fleet into the Grand Line, where they were decimated by Mihawk, and as a result, he attempted to make the Baratie his new ship.

Kreig is cruel, dishonest, and arrogant, and does not care about his crew. The only reason he has a crew is because he knows he cannot sail alone, and he rules over them with fear. Roger loved his crew and treated them with respect, which is one of the reasons why he was the perfect Pirate King.