Of all the varied powers in the One Piece story, none are stronger than Haki. Although most consider Devil Fruits to be the main power system of the franchise, they can't deny that the entire landscape changed once Haki was fully established and introduced into the series. Ever since then, some of the strongest characters in history have been defined as those who only use Haki.

Even among Haki, there is a special type called Conqueror's Haki, which is said to be the rarest ability in the world that only one person in a million is born with. This power can't be learned so only the strongest are naturally attuned to being able to use it, leading to some of the most broken feats in the series. So, let's take a look at the greatest feats of Conqueror's Haki that have ever been shown in One Piece.

One Piece: The Strongest Haki-Only Fighters In The Series, Ranked

Although Devil Fruits are One Piece's primary power system, there are quite a few characters who have become strong through Haki alone!

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By Haider Haroon Rasheed

Luffy Knocked Out 50,000 Fishmen Without Even Having Mastered The Power

Luffy Easily Defeated Half Of Hody Jones' Army

Occurrence	One Piece, Chapter 634, "100,000 vs. 10"
Story Arc	Fishman Island

Luffy knocked out 50,000 Fishmen.

He took out a hell of a lot of pirates without even lifting a finger!

At its very basic level, Conqueror's Haki can be defined as the exertion of one's will onto others in order to dominate or subdue them. Though Luffy had shown the ability before, it was only after the time skip that he could fully control it, and no better example can be seen than when he knocked out 50,000 Fishmen at once during the Fishman Island arc. Though it wasn't the most advanced application of this power, the sheer number of foes that Luffy was able to defeat definitely makes this one of the most impressive showings of Conqueror's Haki.

Galaxy Impact Was Like Garp Unleashing A Nuke Through Haki Alone

A Destructive Move

Occurrence	One Piece, Chapter 1080, "The Hero of Legend"
Story Arc	Post-Wano

One of the greatest offensive feats ever.

Hey, you damn pirates! Do you know who you have just kidnapped?!

Throughout the history of the Navy, no Marine has ever reached the same level as Monkey D. Garp in terms of fame or strength. Throughout his years as the Hero of the Marines, he became an equal to the Pirate King through Haki alone, and he displayed his mastery over this ability when he went to save Koby from the Blackbeard Pirates. Here, despite being far past his prime, Garp unveiled his Galaxy impact technique, which was the shockwave made from a Haki-infused punch that destroyed most of Hachinosu. Garp's powerful technique is one of the strongest ever shown in the series as it almost destroyed the entire landmass of Hachinosu.

One Piece: 5 Strongest Families That Can Rival The Monkey D. Family

The Monkey D. Family is strong, but it has a lot of competition in One Piece.

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By Rei Penber

Roger Managed To Defeat The Legendary Oden With A Single Attack

The Iconic Divine Departure

Occurrence	One Piece, Chapter 966, "Roger and Whitebeard"
Story Arc	Wano

Roger easily defeated a living legend.

I smell a beast!

Even among users of Conqueror's Haki, only the best of them can use the power in its strongest form. One of the Advanced Forms of Conqueror's Haki is Conqueror's Coating, which essentially coats the user or their weapon with the power, which Roger masterfully used against Oden during the three-day brawl between the Roger and Whitebeard Pirates. Oden is remembered as one of the strongest figures of the old era, so Roger defeating him with a single hit from his Divine Departure attack is a testament to the strength of the Pirate King's Haki, especially since Oden was also able to defeat the legendary Kaido with a single hit as well.

Shanks Managed To Subdue A Navy Admiral From Many Miles Away

The Greatest Modern Haki Feat

Occurrence	One Piece, Chapter 1055, "The New Era"
Story Arc	Wano

Shanks showed the best Haki mastery of the modern era.

Does the new era really scare you that much?!

Fans already knew that Shanks owes his incredible power to his mastery of Haki alone, as he is the only Emperor of the Sea to have ever reached that level without a Devil Fruit. Still, none could have expected just how insane his Conqueror's Haki was, which was first properly teased when Green Bull went to Wano and Shanks was able to subdue him with his Conqueror's Haki from far outside Wano's borders. It's one thing to have such intense control of Haki to do this to someone, but it's entirely another to do it to a Navy Admiral, cementing this as the greatest Haki feat of the modern-day.

One Piece: Although Shanks Has Future Sight, Scopper Has Proven To Have The Best Observation Haki Because Of This Feat

Shanks displaying his amazing Future Sight showed his skill, but this one feat showed why Scopper's Observation Haki might be the best!

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By Haider Haroon Rasheed

Joyboy's Ancient Haki Banished The Gorosei And Even Affected Imu

The Most Potent Haki Of All Time

Occurrence	One Piece, Chapter 1122, "Time is Right"
Story Arc	Egghead

The greatest Haki feat of all time.

Remember Emet... Only when the time is right!

Joyboy is rumored to be the strongest character in the entire One Piece story, and the only showing of his power already implies this heavily. Ages ago, during the Void Century, Joyboy created a knot that he imbued with some of his strongest Haki and kept it inside Emet; only to be used when the time was right. When Emet finally untied it during the Egghead arc, the ancient Haki within was so potent that it knocked out most people present, banished all the Gorosei who were summoned onto the island, and was even felt half a world away by Imu despite being the Haki of someone dead for centuries. Throughout One Piece, no Haki feat tops this one.