The Marines are one of the Three Great Powers in the world of One Piece. They are affiliated with the World Government, and their main goal is to stop all the criminals in the world. They have been helping the World Government by getting rid of people, who could pose a threat to their authority. The Marines are led by the Fleet Admiral, and he has complete authority over every soldier.
The current Fleet Admiral is Akainu, who was promoted after winning the fight against Aokiji. Under Akainu's guidance, the Marines have become much more ruthless, and they have been actively trying to hunt pirates. Over time, the Marines have gained the reputation of being unbeatable, but that is not the case, in fact, there are many One Piece characters who are stronger than the Fleet Admiral and the Admirals. In addition to their lack of power, the Marines are not the saints that they claim to be.
One Piece: Most Hardworking Pirates
While the Marines claim that they aim to serve and protect the people, on many occasions, they have attacked and killed innocent people. In the past, when a buster call was initiated on Ohara, the Marines attacked many scholars. Furthermore, when the remaining citizens were evacuated on a ship, Akainu ordered his troops to destroy it. Akainu did not care about the innocent people on the ship, he just wanted to go through with his «Absolute Justice.»
When the Straw Hats were still in East Blue, they came across Nezumi, who was an extremely corrupt Marine captain. He was on good terms with Arlong and the latter gave him bribes to cover up his actions. Arlong's relationship with Nezumi allowed him to terrorize the people living in Cocoyasi Village, and without any interference from the Marines. As Arlong's actions
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