Ace

Biodata

Feature	Details
Name	Ace (艾斯)
Alias(es)	Gol D. Ace; Fire Fist Ace; “Ronin” (Wano disguise) 123 253 366
Gender	Male
Parentage	Son of Gol D. Roger and Portgas D. Rouge; Kahn's twin brother 1 126
Affiliation	Eclipse 166 366
Occupation/Role	Eclipse combatant and field operative 242 366
Status	Alive
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Navy Six Powers foundations	5 6	Endures Garp's increased training regimen, grasps the fundamentals, and begins learning Moonwalk; initially manages two air-steps before falling.
Armament Haki and aerial mobility	10	Coats both fists in Armament Haki and uses Shave and Geppo alongside Sabo.
Proficient Six Powers	23	Uses Geppo at high speed and has mastered the Navy Six Powers with Sabo.
Conqueror's Haki awakening	44	Releases unstable Conqueror's Haki while protecting his brothers; Garino notes that Ace cannot yet control it.
Refined Armament Haki	84	One-shots the 72-million-Beli pirate Skull Crusher Garl with a Haki-coated punch.
Friction-based flame technique	101 102	Develops bright yellow flames by combining Armament Haki with high-speed friction against the air.
Ryuo threshold	125	Breaks through his mental block and crosses the threshold into Ryuo, projecting Armament Haki outward.
Ryuo fully unleashed	134	Lands a full-force Ryuo strike on Garp, forcing the Marine hero half a step back and leaving a visible mark.
Advanced penetrating Ryuo	233	Projects Haki through Marco's flames and defenses, disrupting the Phoenix's regeneration rhythm.
Great Flame Commandment	355	Generates powerful flames through his physique and high-level Ryuo rather than a Devil Fruit, overpowering Smoothie's water attack.
Compressed white and blue flames	366 367	Compresses flame within Ryuo to destroy Bard's Haki-coated saber; later restrains him with a deep-blue flaming fist.

Background / History

Ace was born alongside his twin brother Kahn after Portgas D. Rouge prolonged her pregnancy for twenty months to conceal Roger's children from the World Government. Rouge died after giving birth, while Garp helped smuggle the twins away from the government search. 1

Raised on Mount Colubo by the Dadan Family, Ace grew up sparring with Kahn. Kahn's extraordinary power repeatedly left Ace feeling inferior, but it also forged his determination to surpass him. Garp subjected both boys to harsh physical training and taught them the Navy Six Powers. 4 5 6

Ace later trained and fought beside Sabo and Luffy. He became one of the three brothers shaped by Kahn's demanding standards, developing formidable physical strength, Haki, and aerial mobility while still young. 10 23 27

Roger's legacy remained Ace's deepest emotional conflict. He resented being defined by his father's name and feared that Ryuo represented Roger's shadow. Rayleigh's account of Roger and Rouge, together with a photograph of his parents, forced Ace to confront that pain; he ultimately chose to use his strength for himself rather than reject it because of its origin. 122 126 131

Appearance

By age thirteen, Ace is a lean, muscular boy with black hair and a fierce, wolf-like gaze. He commonly carries an iron pipe and later wears an orange cowboy hat. 82 112 150

• Orange cowboy hat, associated with his later appearances and his “Fire Fist Ace” identity. 150 366
• Iron pipe used as both weapon and Haki conduit. 150 247
• Fragment of Roger's old pirate flag tied around his left forearm during Rayleigh's training. 119 121
• Often manifests orange, yellow, white, or deep-blue flames around his hands without using a Devil Fruit. 101 355 366 367

Personality

Ace is intensely competitive, particularly toward Kahn. Kahn's overwhelming strength bruised his pride, yet Ace turns that frustration into relentless training rather than surrender. His ambition to become strong is tied to both a desire to surpass Kahn and a need to choose his own answer to Roger's legacy. 10 82 131

He is impulsive and confrontational when Sabo or Luffy are endangered, even threatening Garino when he believes Sabo has been sent into danger alone. However, Ace is also protective of ordinary people: in Udon, he intervenes against guards abusing prisoners and children, then helps give the prisoners a chance to escape. 100 247 254

Despite his rough manner, Ace responds strongly to kindness and domestic care. While staying with Peter Parker and Aunt May in New York, he quietly offers to help with physical work and gives Aunt May a valuable armlet to repay her hospitality. 187 188

Abilities & Skills

Navy Six Powers

Ace was trained in the Navy Six Powers from childhood and relies especially on Shave, Geppo, and Moonwalk-derived aerial movement.

• Uses Shave to vanish from an opponent's sight and close distance instantly. 193 247
• Uses Geppo for sustained aerial movement and high-speed repositioning. 23
• Combines Six Powers mobility with his iron pipe to overwhelm groups of armed opponents. 247
• His physical training allows him to bend rifles, broadswords, and other weapons through raw force. 39 247

Armament Haki

Ace can coat his body and weapons in Armament Haki, using it to strike Devil Fruit users and reinforce his already exceptional physical strength.

• Coats both fists and his iron pipe in black Armament Haki. 10 150
• Defeats Skull Crusher Garl with a single Haki-coated punch. 84
• Can shatter or resist weapon attacks with Haki-reinforced strikes. 150 254
• Uses Haki to break Nico Robin's restraining arms before they can fully immobilize him. 154

Ryuo

Ace's Ryuo is an advanced Armament Haki application that projects force beyond the point of impact and can penetrate defenses.

• Forced Garp back half a step with a full-force Ryuo punch. 134
• Shattered Stone Face's hardened “Iron Fist” through projected Haki. 254
• Bypasses Marco's flames to strike the body beneath and disrupt his regeneration. 233
• Channels Ryuo through his flames and iron pipe, enabling attacks that damage Haki-coated weapons and armor from within. 366

Conqueror's Haki

Ace possesses Conqueror's Haki, which first manifests uncontrollably during a crisis.

• Awakens it while refusing to let Garino harm his brothers. 44
• Its initial release is powerful but uncontrolled, forcing stronger fighters to keep their distance. 44 100
• Later uses Conqueror's Haki in conjunction with Ryuo to suppress Marco's Phoenix flames. 233

Fire-Generating Techniques

Ace has not eaten the Flame-Flame Fruit. His flames are produced through his physique, explosive arm movements, friction, and high-level Haki. 355

• Friction Flame — Creates bright yellow flames through high-speed movement and Armament Haki. 101 102
• Fire Fist — Combines flames and Ryuo into a powerful direct strike; used against Kaido's scales and Bard. 347 366
• Great Flame Commandment — Produces large-scale flames through rapid arm movement and Haki collision, overpowering Smoothie's water-based attack. 355
• Compressed Flame — Condenses fire into white or deep-blue forms inside Ryuo for greater penetration and destructive power. 366 367

Equipment / Weapons / Items

• Iron pipe — Ace's primary weapon; frequently coated in Armament Haki and Ryuo. 150 247
• Orange cowboy hat — His recognizable headwear in later arcs. 150 366
• Roger Pirates flag fragment — Given to him by Rayleigh and tied around his left forearm during training. 119
• Seastone handcuffs — Used by Eclipse drones to restrain Bard after Ace and Sabo force his surrender. 367

Relationships

• Kahn — Twin brother, mentor, and Ace's greatest source of rivalry. Ace trains obsessively to defeat him, but also recognizes Kahn's authority and protection. 4 10 102
• Portgas D. Rouge — Mother; died after giving birth to Ace and Kahn following her twenty-month pregnancy. Her sacrifice becomes central to Ace's acceptance of his own life. 1 122
• Gol D. Roger — Biological father. Ace initially resents Roger's shadow, then learns that Roger had hoped to name his son Ace and had looked toward the East Blue before his execution. 112 126
• Monkey D. Garp — Guardian and harsh trainer. Garp pushes Ace physically from childhood and later acknowledges that Ace has reached the threshold of the New World. 5 6 134
• Sabo — Brother, closest combat partner, and emotional anchor. Sabo helps Ace confront his Ryuo mental block, and the two coordinate effectively in battle. 121 122 367
• Monkey D. Luffy — Brother and frequent sparring partner. Ace is protective of Luffy, though he often scolds him for recklessness. 119 178 243
• Silvers Rayleigh — Haki mentor who reveals the truth about Roger and Rouge, gives Ace Roger's flag fragment, and guides him into Ryuo. 119 125 126
• Tony Stark — Eclipse ally and training companion. Tony monitors Ace's combat data and develops technology used during his Haki training. 116 125
• Garino — Eclipse officer who tries to stop Ace from leaving East Blue and later manages affairs around the brothers. 100 101

Story Role / Major Arcs

East Blue training and the Three Heroes of the Night

Ace grows up under Garp and Kahn's brutal training, becomes proficient in the Navy Six Powers, and fights beside Sabo and Luffy against threats in Goa Kingdom. His strength allows him to overpower Marine petty officers and warrant officers by age ten. 23 39

Sabo's disappearance and Twin Cape training

When Sabo goes missing in the Grand Line, Ace attempts to leave East Blue against Kahn's orders. After reuniting with Kahn, he accompanies the group to Twin Cape, where Rayleigh's special training helps him overcome his fear of Roger's legacy and awaken Ryuo. 100 102 115 125

Alabasta and the fall of Crocodile

Ace joins Sabo, Luffy, and Tony in the assault on Baroque Works. He fights Crocodile with an iron pipe reinforced by Armament Haki and helps capture the former Shichibukai. 159 160 166

Queens incident

Separated from Kahn during dimensional travel, Ace reaches Queens with Sabo and Luffy. He trains Peter Parker, clashes with military forces and gamma monsters, and uses Ryuo to hold back Hulk's punch before sending him crashing away. 183 193 208 211

Wano Country infiltration

Disguised as the ronin “Ronin,” Ace infiltrates Udon Prison Mine. He defends abused prisoners, defeats guards and Headliners, acquires information on Seastone veins, and confronts Queen while protecting the prisoners' opportunity to escape. 242 247 254 255 257

Totto Land combat assessment

Kahn assigns Ace, Sabo, and Luffy to defeat Totto Land's officers. Ace fights Smoothie with the Great Flame Commandment and Ryuo, contributing to Eclipse's defeat of the Big Mom Pirates and annexation of Totto Land. 355 359

Clearing out remnants of the old era

Ace and Sabo intercept Bard and other remnants of the Pleasure District targeting an Eclipse transport. Ace destroys Bard's saber with compressed flame and Ryuo, then helps force his surrender. 366 367

Notable Quotes

“One day, I'll defeat him!” 10

“I don't care whose power it is. As long as I can use it.” 122

“Old man, don't underestimate us!” 134

“The glory of the Rocks era? That kind of thing should have been buried in a coffin long ago.” 367