At the beginning of One Piece getting a devil fruit meant a lot. Devil fruits were treated as something super rare and their users were feared by ordinary people. However, as the series dragged on Oda introduced a new power known as Haki.

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It can be divided into three types—Armament Haki, Observational Haki, and Conqueror's Haki. The first two types can be learned with enough training, however, Conqueror's Haki cannot be awakened with training. Only a person who is innately born with Conqueror's Haki can use it, which makes it the rarest type of Haki in One Piece.

Updated on April 22, 2023, by Suzail Ahmad: Conqueror's Haki is arguably the strongest power in the entire series. In the Wano Country arc, Kaido and Luffy demonstrated the damage that Conqueror's Haki could cause. This type of Haki can be used in various ways. It can either be used to knock out weaker opponents, damage the surroundings, or enhance the power of attacks. Since it is a rare type of Haki, only a few characters can use it, and even fewer have mastered it. With that in mind, the list has been updated to include one new entry and the strongest attack of every Conqueror's Haki user.

18 Luffy

Monkey D Luffy in One Piece: Stampede

The captain of the Straw Hats, Luffy unknowingly used Conqueror's Haki during the Marineford arc. When Ace was about to be executed by the Marines, Luffy's desperateness awakened his latent power. He used Conqueror's Haki and knocked out the executioners, thus saving Ace. Since then, Luffy has learned to use all three types of Haki.

Biggest Feat: Luffy's biggest feat so far is undoubtedly being able to fight against Kaido 1v1. At the beginning of the Wano Country arc, Luffy was immediately knocked out by Kaido, but currently, he can fight the "Strongest Creature in the World."

​​Strongest Attack: Luffy's strongest attack is called the Bajrang Gun. He used the attack to defeat Kaido and end his reign of terror. The attack can easily obliterate an island.

17 Boa Hancock

one piece 3D2Y, Boa Hancock

Boa Hancock is the Empress of Amazon Lily and she is the captain of the Kuja Pirates. She is a fearless fighter, who is not afraid to rebel against the World Government. Hancock's devil fruit makes her an incredibly dangerous opponent as it is almost impossible to avoid her attacks. She can use all three types of Haki.

Biggest Feat: Boa Hancock has not been involved in the last few arcs, but she is still a strong fighter. Her biggest accomplishment is becoming the Shichibukai after her first voyage.

Strongest Attack: Hancock's Mero Mero no Mi makes her a very dangerous opponent. She uses Mero Mero Mellow to petrify her targets, after which she can pick them off easily.

16 Silvers Rayleigh

One Piece Silvers Rayleigh Kenbunshoku Haki

Rayleigh served as the right-hand man of the late Pirate King, Gol D. Roger. Even in his old age, Rayleigh is capable of fighting an Admiral without any difficulty. Kizaru admitted that he would require more support to catch Rayleigh. Rayleigh is apt at using all three types of Haki and he taught Luffy to use them during the time skip.

Biggest Feat: Silvers Rayleigh is one of the few survivors of the old era. As a member of the Roger Pirates, Rayleigh has conquered the Grandline, making him one of the most wanted pirates in the world. His biggest feat is saving the Straw Hats from the Navy.

Strongest Attack: Rayleigh has shown that he is capable of fighting against the strongest characters without any problem. He hasn't used a named move in the series, but he probably used his strongest attack against Kizaru.

15 Shanks

One Piece - Shanks with the Straw Hat

One of the Yonko, Shanks is an extremely powerful pirate. He is the captain of the Red Hair Pirates and is Luffy's idol. Shanks was the first person to use Conqueror's Haki in One Piece.

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He used it to scare away the King of the Near Sea. Shanks' Conqueror's Haki is so powerful that he was able to damage Whitebeard's ship.

Biggest Feat: Not many characters can boast of being more powerful than Shanks. Shanks' biggest feat is that he stopped Kaido from coming to Marineford and then stopped the Summit War.

Strongest Attack: Shanks is among the few characters who can use Conqueror's Haki to amplify the power of their attacks. His best move is called Divine Departure, which he used to obliterate the Kid Pirates.

14 Kaido

One Piece Kaido Kenbunshoku Haki Wano

Also known as the Strongest Creature in the World, Kaido is the main antagonist of the Wano Country arc. After murdering Oden years decades ago, Kaido ruled Wano along with Kurozumi Orochi. Kaido is armed with the Uo Uo no Mi, Model: Seiryu, a mythical zoan-type fruit that adds to his surreal strength. Unsurprisingly, Kaido is able to Conqueror's Haki and he can coat his body and his weapon with it.

Biggest Feat: Kaido's physical strength is ridiculous and there are not many characters who can give him a proper fight. His biggest feat is that he managed to earn the title of the "Strongest Creature in the World."

Strongest Attack: Kaido has many powerful attacks that he used to beat Luffy to a pulp, but none of them compare to Hakai, the move he used together with Big Mom.

13 Big Mom

Big Mom scaring the Beasts Pirates

Big Mom is the captain of the Big Mom Pirates. She rules over Totto Land with her children. Being a Yonko, it is not a shock that Big Mom possesses all three types of Haki. Big Mom's Conqueror's Haki was so powerful that she was able to destroy the missiles used by Capone Bege.

Biggest Feat: Big Mom has come a long way since her days as a member of the Rocks Pirate. She has made a name for herself and she currently holds one of the four spots as the Yonko, which is undoubtedly her greatest achievement.

Strongest Attack: Big Mom's strongest attack is also Hakai. The attack was so powerful that Zoro nearly died while trying to stop it.

12 Don Chinjao

One Piece Don Chinjao fighting against Lucy

Don Chinjao participated in the tournament for the Mera Mera no Mi, which was held at the Corrida Coliseum. As the former leader of the Happo Navy, Don Chinjao is able to use Hasshoken, which is a unique fighting style. In his prime, he fought against many strong opponents, including Monkey D. Garp. Chinjao used Conqueror's Haki when he fought against Luffy.

Biggest Feat: It is extremely unlikely that Don Chinjao will be involved in any of the future arcs. His biggest feat is fighting Monkey D. Garp, which ended in an awful loss for the pirate.

Strongest Attack: Don Chinjao was a veteran pirate who clashed with many powerful opponents. As a practitioner of Hasshoken, it's not surprising that his best attack is powered by it. Chinjao's Hasshoken Secret Art: Drill Dragon Nail enabled him to split multiple layers of thick ice with his head.

11 Whitebeard

Whitebeard's Tremor Fruit Activated

Whitebeard used to be rivals with Gol D. Roger, which is a big feat in itself. When he was still alive, Whitebeard held the title of the Strongest Man alive in the One Piece world.

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Whitebeard possessed the Gura Gura no Mi, which is a paramecia-type devil fruit. At Marineford, Whitebeard was too weak to use Conqueror's Haki, if he was healthy, Ace might have managed to survive.

Biggest Feat: Whitebeard was hailed as the "Strongest Man in the World." He held onto that title decades after Roger's death. He is the only person who could fight on equal footing with Gol D. Roger.

Strongest Attack: Whitebeard's most powerful attack is Shima Yurashi. The move created giant tsunamis that would have engulfed the island of Marineford if not for Aokiji.

10 Yamato

Yamato without Mask

Yamato is Kaido's son and one of the strongest fighters involved in the Onigashima War. He ate the Inu Inu no Mi, Model: Okuchi no Makami, which is a mythical zoan-type devil fruit. Yamato's devil fruit grants him incredible power. Yamato can use all three types of Haki, and he was able to fight against his father in a 1v1, which is an astounding feat.

Biggest Feat: Yamato has a big responsibility on his shoulders and so far he hasn't let the fans down. He is a strong opponent, which was proven when he clashed with his father, Kaido.

Strongest Attack: Yamato used Hallowed Glacier Slash to attack Kaido, who even tried to block it but ended up being knocked to the ground anyway.

9 Gol D. Roger

One Piece Gol D Roger using Divine Departure

Gol D. Roger was the only person who managed to reach the final island, Laugh Tale. This made him the biggest threat to the World Government. He has the highest-known bounty in the series. Roger's strength was admired by his peers as well as his enemies. As he had no devil fruit, Roger relied on using Haki to fight. He was able to use Conqueror's Haki at a very high level.

Biggest Feat: Gol D. Roger was arguably the strongest pirate of his time. His biggest achievement is becoming the first person to conquer the Grandline and being crowned the Pirate King.

Strongest Attack: Within the limited screen time, Roger proved why he is regarded as the greatest pirate of all time. His Divine Departure was able to send Kozuki Oden flying through multiple rocks.

8 Kozuki Oden

One Piece Oden Busoshoku Haki

Kozuki Oden was the Daimyo of Kuri, however, he wanted to see the entire world so he decided to set sail with the Whitebeard Pirates.

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Oden is one of the most powerful swordsmen and with his mastery of Haki, he was able to injure Kaido. Oden was revealed as a user of Conqueror's Haki when he clashed against Whitebeard.

Biggest Feat: Kozuki Oden's strength was acknowledged by the greatest pirates of all time. He proved his power when he managed to give Kaido a huge scar on his torso.

Strongest Attack: Oden's best attack was Paradise Totsuka. He used it to cut Kaido, who was in his dragon form. This was a big testament to Oden's strength as a fighter.

7 Roronoa Zoro

One Piece Zoro Using His Three-Sword Style

Roronoa Zoro is a member of the Straw Hat Pirates. Zoro was the first person who accepted Luffy's invitation and joined the latter on his journey to become the Pirate King. Zoro is a very powerful fighter and he possesses all three types of Haki. Zoro was able to use Conqueror's Haki unknowingly against Kaido.

Biggest Feat: With his newfound power, Zoro managed to defeat the right-hand man of Kaido. However, his biggest feat is scarring Kaido.

Strongest Attack: Zoro developed the King of Hell style in the Wano Country arc to fight King. His strongest attack is King of Hell, Three-Sword Serpent: 103 Mercies Dragon Damnation, which he used to defeat King once and for all.

6 Eustass Kid

Eustass Captain Kid Of The Worst Generation

Eustass Kid is one of the members of the Worst Generation. He is an infamous pirate, who dreams of becoming the Pirate King. Currently, Kid is fighting Big Mom alongside Trafalgar Law. Kid was confirmed as a user of Conqueror's Haki by Kaido. Whether or not he has control over his Conqueror's Haki is unknown.

Biggest Feat: Eustass Kid finally got his moment in the Wano Country arc when he managed to defeat Big Mom, albeit he required a lot of help from Trafalgar Law.

Strongest Attack: Kid used Damned Punk against Big Mom, and it enabled him to deal significant damage to her. The attack is powered by Kid's Jiki Jiki no Mi.

5 Sengoku

Sengoku Fighting In His Buddha Form In One Piece

Sengoku is the former Fleet Admiral of the Marines. He is one of the legendary fighters from the Old Era. Sengoku possesses the Hito Hito no Mi, Model: Daibutsu.

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Sengoku was acknowledged as a legendary fighter by the Pirate King himself. He is the only Marine who possesses all three types of Haki.

Biggest Feat: Sengoku was acknowledged as one of the Navy's strongest fighters by Roger himself. Sengoku's biggest feat is defeating and capturing Shiki.

Strongest Attack: Sengoku's attacks haven't been named in the manga. Although they were later named in One Piece: Burning Blood. The attack that Sengoku used against the Blackbeard Pirates is called Impact Wave. It was strong enough to injure several pirates.

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4 Charlotte Katakuri

Katakuri One Piece

Charlotte Katakuri is one of the Sweet Commanders of the Big Mom Pirates. Before fighting Luffy, Katakuri boasted of an unbeaten record. Katakuri can use all three types of Haki and he can actually use the Advanced versions of both Armament and Observational Haki.

Biggest Feat: Charlotte Katakuri proved to be a strong opponent for Luffy, and it took Luffy using a new form of Gear Fourth to defeat him. Katakuri's past record of being unbeaten is quite outstanding.

Strongest Attack: Charlotte Katakuri used Buzz Cut Mochi while fighting Luffy in the Mirror World. This particular attack was so potent that it nearly knocked Luffy out.

3 Doflamingo

One Piece Doflamingo grinning

Currently imprisoned in Impel Down, Doflamingo is one of the best villains in One Piece. He ate the Ito Ito no Mi, which is a paramecia-type devil fruit. The devil fruit allows Doflamingo to create and control strings at will. Doflamingo awakened his Conqueror's Haki when he was hung by the angry civilians. He can use Conqueror's Haki to knock out fodder quite easily.

Biggest Feat: Doflamingo's biggest feat is taking over the country of Dressrosa without bringing an army. He simply manipulated King Riku and then became the King of Dressrosa himself.

Strongest Attack: Doflamingo had great control over his devil fruit, which enabled him to fight Luffy for a long time. Doflamingo used many techniques in their fight, but his most powerful was God Thread.

2 Portgas D. Ace

One Piece Portgas D. Ace Wano

Ace was the Second Division Commander of the Whitebeard Pirates. Armed with the Mera Mera no Mi, Ace was considered one of the strongest fighters within the Whitebeard Pirates. Ace used Conqueror's Haki subconsciously to knock out the members of the Bluejam Pirates.

Biggest Feat: Ace died way too early, but his will is carried by Sabo. In no way was Ace an average fighter and he proved his skill when he managed to stop Blackbeard from going to capture Luffy.

Strongest Attack: Ace developed many strong techniques, and he used them to take down many strong opponents. His strongest attack was the Great Flame Commandment: Flame Emperor, which he used while fighting Blackbeard.

1 Monkey D. Garp

One Piece Garp Vice Admiral

Monkey D. Garp is known as the "Hero of the Marines." He was the only Marine strong enough to fight against Gol D. Roger. Garp was also involved in the God Valley Incident, in which the Rocks Pirates were defeated. Garp is among the few strong characters who do not have a devil fruit and are completely reliant on their Haki.

Biggest Feat: Garp's biggest feat is taking down the infamous Rocks Pirates at God Valley. If the crew was allowed to be free, there is no telling what problems they would have caused.

Strongest Attack: Garp's strongest attack is Galaxy Impact. The attack was powered by Conqueror's Haki and Garp was able to destroy a large part of Hachinosu with it.

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