The term "Supreme King Haki" likely originates from a fan translation or confusion with Haoshoku (覇王色, "Supreme King/Conqueror Color") itself. In Japanese, Haoshoku Haki literally means "Supreme King Color Haki." Thus, referring to a technique as "Supreme King Haki" is redundant—it would be like calling a specific sword swing "Samurai Sword."
The correct canonical hierarchy, as established by Silvers Rayleigh and detailed in Vivre Card databooks, is:
Luffy does not achieve the latter until the Wano Country Arc.
If you want to see Luffy use the Advanced form of Supreme Haki (coating his fists without touching the enemy), the specific episode is:
If you want to see the first time Luffy uses Basic Supreme Haki to knock out fodders:
Luffy first utilizes Supreme King Haki in episode 389 against Duval's bull, with his first major display occurring in episode 413 to stop the Boa sisters on Amazon Lily. Later, he exhibits mastery post-timeskip, knocking out 50,000 enemies in episode 554, and eventually masters advanced infusion during the Wano arc. For a full, detailed breakdown of these episodes and Haki's, visit the One Piece Wiki.
first used Supreme King Haki (also known as Conqueror's Haki or Haoshoku Haki) subconsciously in Episode 389. He does not gain full, intentional control of this power until after the two-year time skip in Episode 518. which episode luffy use supreme haki
Below is a guide to the key episodes where Luffy unleashes this rare power. 🌩️ Subconscious Usage (Pre-Time Skip)
Before his formal training, Luffy released massive bursts of Haki during moments of extreme emotional distress.
Episode 389: The first undeniable use. Luffy accidentally intimidates Motobaro (Duval’s bull).
Episode 413: During the fight against the Boa sisters on Amazon Lily. Luffy shouts to save Margaret, knocking out many spectators.
Episode 438: In Impel Down, he uses it to knock out a pack of hungry wolves while trying to protect Bon Kurei.
Episode 478/479: His most famous early use. During the Marineford War, Luffy lets out a scream to stop his brother Ace's executioners, knocking out thousands of Marines and pirates. 🎯 Intentional & Advanced Usage (Post-Time Skip) The term "Supreme King Haki" likely originates from
After training with Silvers Rayleigh, Luffy masters the ability to use Haki at will.
Luffy uses his "Supreme King" Haki (also known as Conqueror's Haki) at various points, but he uses the advanced form—often called Advanced Conqueror’s Haki or Infusion—in Episode 1014 during his fight against Kaido.
If you are referring to the first time he uses the basic "Knockout" version of Conqueror's Haki, that occurs during the Marineford Arc (Episode 478), where he unknowingly knocks out the executioners preparing to kill Ace.
The specific episode you are looking for is Episode 1028 of One Piece.
Context: The battle on the Skull Dome rooftop. Luffy, Zoro, Law, Kid, and Killer are fighting Kaido and Big Mom simultaneously. After recovering from his first defeat, Luffy realizes that Kaido's terrifying power doesn't come from physical punches, but from coating his body in Supreme Haki.
The Moment: Around the 18-minute mark of Episode 1028, Luffy stares down Kaido. He stops trying to punch with physical strength. Instead, he channels his willpower into his fist. Black, thick lightning (visually distinct from Armament Haki) begins to coil around his arm without him touching anything. Luffy does not achieve the latter until the
He throws a punch at Kaido. The punch does not touch Kaido’s face. It stops a millimeter away, but the force of the Supreme Haki blasts through Kaido’s skull, causing the Yonko to spit up blood and feel genuine pain for the first time in decades.
Keyword Answer: Yes, Episode 1028 is the episode where Luffy uses "Supreme Haki" in its advanced, offensive form.
If you are looking for the specific episode where Luffy shocks the world by coating himself in Supreme King Haki for the first time, watch Episode 1015.
If you want to see him use it at its absolute strongest (defeating Kaido), watch Episode 1079.
This is a fascinating question because it touches on a common point of confusion within the One Piece fan community. To give a direct and academically precise answer first: There is no episode in which Luffy uses "Supreme King Haki" because that specific term does not exist in the canonical manga or anime.
However, the intent behind your question is clear and worthy of deep analysis. You are asking about the pinnacle of Conqueror's Haki (Haoshoku Haki)—the ability to infuse one's willpower directly into attacks, a technique officially named "Infusion of Conqueror's Haki" (or Haoshoku no Haki no Idō).
This paper will clarify the terminology, trace the exact episodes where Luffy first demonstrates each major tier of Conqueror's Haki, and argue why the misunderstanding of "Supreme King Haki" is itself a valuable case study in how One Piece evolves its power system.