Ace

Biodata

History

Ace was already the Whitebeard Pirates’ Second Division Commander when Rune joined the crew. He quickly became one of Rune’s friends, and openly took pride in his younger brother Luffy’s exploits. 1 4

After news of Luffy’s attack on a Celestial Dragon, Ace secretly left the Moby Dick with Rune to find him on Amazon Lily. The pair located Luffy, helped secure his recovery, and brought him under Whitebeard’s protection for training. 6 7 8

At the Sabaody Archipelago, Ace and Rune staged a public clash with Bartholomew Kuma to create world-shaking news around Luffy. Ace used his Flame-Flame Fruit against Kuma before retreating with Rune and Luffy as planned. 8 He later fought alongside Rune against Kuma again; Rune nullified Kuma’s Paw-Paw Fruit while Ace struck with Flame Emperor, allowing them to capture Kuma alive. 13

Ace’s impulsiveness led him to challenge Kaido in Wano Country, where he was captured by the Beast Pirates’ All-Stars. Rune and Kuma infiltrated Onigashima, freed Ace and Yamato, and extracted them before the conflict escalated into full war. 21 23 24

Following the rescue, Rune forced Ace into a one-on-one battle to make him confront the consequences of risking himself and worrying the crew. Ace exhausted himself in the clash and accepted Rune’s warning to consider his family before acting recklessly. 25 26

Whitebeard later considered Ace and Rune as possible successors to the Whitebeard Pirates, believing that both possessed the potential to become kings. Rune instead chose to establish an independent crew, leaving Ace’s ultimate position within the Whitebeard Pirates unresolved. 46 47

Personality

Ace is intensely proud of Luffy and readily identifies him as his younger brother. He is protective of Luffy, joining Rune’s efforts to find him and publicly confronting Kuma over Luffy’s apparent mistreatment. 4 6 8

He is also reckless and confrontational. His decision to pursue Kaido alone resulted in his capture and placed Whitebeard’s crew at risk of war with the Beast Pirates. 21 23 Though initially slow to grasp the severity of his actions, he accepts Rune’s criticism after their battle and acknowledges the need to become stronger and more considerate of his companions. 25 26

Abilities & Skills

Flame-Flame Fruit

Ace can generate and transform into flames, using fire-based attacks in battle. 8 13

• Uses Fire Fist against enemies, including Bartholomew Kuma. 8 25
• Can carry others through the air in his flame form. 8
• Uses Flame Emperor, a large-scale fire attack deployed against Kuma and later against Rune’s Black Star. 13 26
• His flames can be directly absorbed or extinguished by Rune’s Dark-Dark Fruit, leaving him vulnerable in their fights. 10 25

Haki

Ace possesses Haki, but he initially devoted more effort to developing his Devil Fruit than to refining it. Rune judges Ace’s Haki to be roughly equal to his own at the time, prompting Ace to commit to further training. 10

• His lack of Conqueror’s Haki Coating leaves him at a disadvantage against Rune’s coated attacks. 25
• His combat ability is strong enough to contribute against Seven Warlord Bartholomew Kuma, particularly when working with Rune. 13

Relationships

• Rune — Fellow Whitebeard Pirate and frequent partner in battle. Rune helps Ace find Luffy, fight Kuma, rescue Ace from Wano, and confront his recklessness through a serious duel. 6 13 24 26
• Monkey D. Luffy — Ace’s younger brother. Ace is openly proud of Luffy and fiercely protective of him. 4 6 8
• Whitebeard — Ace’s captain and father figure. Whitebeard leads the effort to rescue Ace from Kaido and later considers him as a potential successor. 21 46
• Marco — Senior crewmate who recognizes Ace’s tendency to cause trouble but supports the lesson Rune gives him after the Wano incident. 23 26
• Yamato — Fellow prisoner in Onigashima, rescued alongside Ace by Rune and Kuma. 24

Notable Quotes

“You dared to injure my little brother and his crew. I came here today to avenge my brother!” 8

“Flame Emperor!” 13