Marines are harbingers of justice who roam the seas to bring criminals to justice and protect the innocent. They have been on the front line against pirates for centuries, and it is because of their hard work that the world is not overrun by criminals. There are different positions within the Marines, and they are based on a person's experience and what they have accomplished.
The position of admiral is one of the most prestigious, and at one time, only three people could hold the title. They are said to be the strongest military power in the world and are ridiculously powerful. That said, admirals are not invincible. With that in mind, here are some One Piece characters that are strong enough to defeat the Admiral.

One Piece: 7 non-Yonkos stronger than Luffy, ranked
Luffy has the strongest Devil Fruit and Haki abilities in the story, but here are 5 characters who are still stronger than him!
9
Silver Raleigh
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Right hand of the Pirate King
Rayleigh is one of the most important characters in the entire series. He is the one who teaches Luffy how to use different types of Haki. Surprisingly, Rayleigh is a Haki master who can use its advanced forms, a feat that has only been accomplished by a handful of people. His strength is known by all, and even Blackbeard refuses to fight him. Rayleigh previously fought Kizaru in Sabaody, and later admitted that he could not defeat the Dark King.
8
Sengoku
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Former Fleet Admiral of the Navy
Sengoku is a highly respected man who has been in the navy for a very long time. He is admired by his friends and his enemies for his strength and tactical genius. During the Marineford arc, it was his guidance that helped the Marines secure victory. He possesses the very rare legendary John Devil Fall which allows him to transform into a golden Buddha. It also grants him a shock-based power that can rival Gura Gura no Mi.

The 9 Strongest Pirates That Yonko Are Not In One Piece, Ranked
Yonko are powerful, but they aren't the only strong pirates in one piece.
7
Dracul Mihawk
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The strongest swordsman in the world
Mihawk is a member of the Cross Guild and one of the strongest characters in the world. She is a powerhouse who has fought against the likes of Shanks. Save for a brief skirmish with Vista, Mihawk hasn't been in an all-out fight for very long. Despite his lack of achievements, Mihawk remains the world's best swordsman whose skill with the sword is unmatched.
6
Gorosei
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Imu's most trusted underlings
These five men are the second-highest officials in world government. They dictate what happens in the whole world. The Gorosei were portrayed as non-combatants, but that was far from the truth. In fact, they are monsters whose power can be compared to natural disasters. They have Devil Fruit powers, which allow them to transform into mythical beasts. Furthermore, they are powerful Haki users, which makes them even more terrifying.

One piece: 6 strong marines from the old generation, ranked
The new generation of Marines is strong, but it can't compare to these old generation legends in one piece.
5
Emu
The emu was once a mysterious character, but not anymore. His revelation makes it clear that Emu has powers unmatched by anyone in the world right now. During the Elbaf arc, Emu made his first Phil appearance and ruined Luffy and his friends' plans in seconds. Even Loki was unable to harm the emu, which goes to show the latter's incredible strength.
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4
Sakazuki
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Fleet Admiral of the Navy
Akainu is an ardent believer in absolute justice, and it's safe to say he's the bane of every pirate. In his eyes, anyone who stands in the way of justice is evil, and they need to be wiped off the face of the world. He has crazy devil fruit and hockey. Both of these abilities helped him defeat Aokiji in a 10-day long battle.
3
Loki
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Cursed Prince of Elbaf
Elbaf introduced one of the strongest characters in the entire series, Loki, heir to Harald's throne. In a short time, Loki has performed some of the most absurd actions in one piece. For example, he was able to defeat Harald, who received a massive power-up from Emu. In recent chapters, Loki fought against Emu himself and gave him a good fight.
2
Scooper Gabon
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Left hand of the Pirate King
Gabon is a former member of Roger Pirates. He is one of the most powerful pirates alive. In fact, he is said to be Ray's equal in strength. Gaban demonstrated his power when he easily defeated Lord Knight. Since he doesn't have a Devil Fruit, he mainly fights using Haki. Considering how Rayleigh was able to defeat Kizaru, there's no doubt that Gaban can too.
1
Monkey d. Garp
Garp may only be a Vice Admiral of the Marines, but that doesn't mean he's the strongest Marine of all time. He doesn't have a devil fruit, but that doesn't stop him from being the strongest. Garp has trained his Haki to such a high level that even a simple punch is filled with such devastating power that it can take down an island in one fell swoop. Furthermore, Garp was powerful enough to go toe-to-toe against Aokiji and only lost due to interference from the Blackbeard Pirates.
- Release date
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October 20, 1999
- network
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Fuji TV
- directors
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Hiroaki Miyamoto, Konosuke Uda, Junji Shimizu, Satoshi Ito, Munehisa Sakai, Katsumi Tokoro, Yutaka Nakajima, Yoshihiro Ueda, Kenichi Takeshita, Yoko Ikeda, Ryota Nakamura, Hiroyuki Kakudou, Takahiro Noimauji, Tokahiro, Enoji Maudo Shishido, Hidehiko Kadota, Sumio Watanabe, Harume Kosaka, Yasuhiro Tanabe, Yukihiko Nakao, Keisuke Onishi, Junichi Fujise, Hiroyuki Satou
- The authors
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Jin Tanaka, Akiko Inoue, Junki Takegami, Shinzo Fujita, Shouji Yonemura, Yoshiyuki Suga, Atsuhiro Tomioka, Hirohiko Usaka, Michiru Shimada, Isao Murayama, Takuya Masumoto, Yoichi Takahashi, Momoka Toyoda
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Mayumi Tanaka
Monkey d. Luffy (voice)
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Kazuya Nakai
Roronoa Zoro (voice)