Haki can transform a character into a powerful and decisive figure. Below are six of the strongest Haki users in the latest storyline of One Piece:
6. Dracule Mihawk

Dracule Mihawk is renowned as the greatest swordsman in the world. His skill is so exceptional that no one can surpass him with mere swords. In the past, he was the traditional rival of Shanks, and their battles were so intense that they shook the entire Grand Line. Mihawk fights with a powerful black blade named Yoru.
5. Monkey D. Luffy

Luffy has become one of the Yonko, considered the most formidable pirate in the world after defeating Kaido in Wano. This battle was significant for Luffy as it not only eliminated a great evil but also improved his Haki. Luffy utilizes three types of Haki and is one of the few who can achieve this. He can even glimpse the future slightly with Observation Haki, and with Conqueror’s Haki, he can potentially devastate entire armies.
4. Kuzan

Kuzan, also known as Aokiji, left the Marines after losing to Admiral Sakazuki at Punk Hazard. He possesses the Logia-type Hie Hie no Mi fruit, which allows him to create and manipulate ice. He has demonstrated great strength with this ability during the Marineford battle.
Kuzan is also capable of using high-level Haki, making him nearly as skilled as Garp. Whether he possesses Conqueror’s Haki is still a question that remains unanswered. However, he certainly is capable of using both Observation and Armament Haki.
3. Sakazuki

Sakazuki, known as Akainu, is the current Fleet Admiral and first appeared prominently during the Marineford arc. He has a very strict viewpoint on justice, wanting to eradicate all criminals without a hint of mercy.
His power comes from the Logia-type Magu Magu no Mi fruit, which allows him to control magma. This ability, combined with Haki, makes him extremely dangerous in combat, even capable of overpowering Marco and Vista during their assaults.
2. Monkey D. Garp

Monkey D. Garp is a legendary figure in the Navy. He was the hero who participated in the God Valley Incident. Garp does not use devil fruit powers but is incredibly strong without them.
Garp is proficient in all three types of Haki and has showcased his strength in many instances, especially when he faced off against the Pirate King, Gol D. Roger. His Haki is so powerful that it can potentially shatter mountains. He is also one of the few individuals capable of facing Roger directly due to his formidable Haki.
1. Shanks

Shanks is one of the Yonko, and this has been frequently mentioned regarding his status. His strength is not derived from a devil fruit, allowing him to focus entirely on honing his Haki, making it exceptionally powerful.
Shanks’ Conqueror’s Haki is considered the strongest in One Piece. With just a display of his power, he made Admiral Ryokugyu retreat from Wano. His Haki is so intense that he can even prevent others from using their Observation Haki to counter him. Shanks can also predict events before they happen, making him a formidable force in any conflict, especially with his exceptional Conqueror’s Haki.