One Piece Conqueror's Haki Luffy. The first time he actually used Conquerers haki that made people pass out was at Amazon Lilly during his fight with Hancocks sisters. After his ordeal in Impel Down he was able to effect an even larger radius when Ace was about to be executed.
72 Chapter 716 p. 1 day agoHowever with the Wano Country arc Oda introduced the true power of Conquerors Haki which has completely altered the power system in One Piece. 12-17 An advanced application of Haoshoku is used by Luffy to attack Kaidou.
16-19 and Episode 646 Luffy and Don Chinjao use both.
Haki was not introduced before the time skip of the series but was introduced right before the time skip occurred as its a common power used in the New World the. The phrase of Dracule Mihawk One by one he turns the people around him into his allies. After the timeskip he now has control of it and is capable. 16-19 and Episode 646 Luffy and Don Chinjao use both.