This advanced form of conqueror's haki allows the user to stop their opponents from using observation haki by unsettling them with their overpowered haki first. So far, only Shanks has been able to use this technique. He's currently called the “Killer of Observation Haki”.
In the anime, the user of Haoshoku Haki has a dark purple aura around him.
In Wano, Luffy took his Haki to the next level. At first, he managed to learn advanced Ryuo, however, during his fight against Kaido, he managed to tap into the advanced form of Conqueror's Haki.
Roger used advanced forms of conqueror's haki as he imbued his sword with conqueror's haki and clashed with Whitebeard. He also used advanced armament haki for more powerful sword attacks. Additionally, Roger possessed the observation haki, thus, making him the strongest haki user of all time in One Piece.
Kaido is one of the Yonko of the Sea in the One Piece world and the pirate considered to be the strongest of all right now. Having the reputation of the strongest, it is no surprise that Kaido is a user of all the three types of Haki and wields Conqueror's Haki at a high level.
Conqueror's Haki is the rarest of all types of Haki in One Piece and only a few people possess it in the New World, implying that there are even fewer people who have a full mastery of this power.
Shortly before the two-year timeskip, the concept of Haki was explained to the fans as Luffy began his training with Rayleigh in Ruskaina.
Garp is known as one of the strongest Marines in history and has his incredible fighting ability and battle instincts to thank for that. What makes Garp stand out most of all is his mastery of Busoshoku Haki. Garp is probably one of the most proficient Busoshoku Haki users in all of One Piece.
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.
Ace has been confirmed to be a user of both Armament and Observation Haki in his novel. Ace could use the Conqueror's Haki as well. This was shown when Ace used his Conqueror's Haki subconsciously to knock out members of Bluejam Pirates.
White Haki spirit color is the rarest color and cannot be obtained with robux.
Garp Is Among The True Elite Of The One Piece World
However, the reveal that he has Conqueror's Haki comes as a surprise, as this power usually belongs to individuals with extreme ambitions, known as Supreme Rulers.
Can Zoro use Ryou? Yes. We see him use Ryou in Dressroasa. The act of moving “flowing” haki from from his body/hand to his weapons IS Ryuo.
He is a specialist of Observation Haki, Ryuo, and also Conqueror's Haki. Among all the Haki types, however, Luffy is especially skilled at using Conqueror's Haki, which is his best Haki type.
Dragon is almost certainly going to be a user of Conqueror's Haki as well just like his son. In Marineford, Luffy's Conqueror's Haki was attributed to Monkey D. Dragon, meaning he is already implied to be its user despite not having used it so far. In the future, fans will certainly see him make use of this ability.
In the anime, the user of Haoshoku Haki has a dark purple aura around him.
In the anime, when Roger uses advanced Busoshoku Haki, it is shown as a red-colored flowing aura.
In the anime, some Haki users are shown surrounded by different color auras (such as red for Luffy, purple for Doflamingo or pink for Big Mom) even if they are not using Haki at that moment.
Nami's Conqueror's Haki
As fans know, Nami doesn't wield any form of Haki in the story so far. Haki is a power that Rayleigh described to be the manifestation of the user's spirit.
But in chapter 1010, we found out that Conquerors haki can be used to Coat your attacks and make it stronger and since then luffy,kaido,yamato,Roger,whitebeard and Zoro have all shown this ability, with kaido stating that even amongst Conquerors, only a few can use this ability .