Zesi

Biodata

Power Progression

The later level and combat-power readings describe Zesi's Martial Soul, not the strength of his real-world body 263 319.

Abilities After the Seventh-Tier Breakthrough

Background and History

Previous Life and the Brunei Family

Zesi comes from the twenty-first century and previously worked as a bartender at a distillery. After transmigrating, he lives as the son of a wealthy merchant whose business supplies dessert ingredients, chiefly flour. Initially, his ordinary aptitude and comfortable circumstances give him little reason to pursue supremacy at sea 2 5 177.

Obtaining the Tremor-Tremor Fruit changes his ambitions. Its dangerous recoil forces him to develop a training method based on gradual adaptation rather than unrestricted destruction. After encountering the Big Mom Pirates, he secures an agreement that makes his father, Wenlai Kate, a direct supplier to Totto Land through Perospero 2 4.

Joining the Roger Pirates

Zesi sets sail alone but postpones founding his own crew because he lacks Haki, experience, and the strength to challenge the New World's leading pirates. At seventeen, he approaches Roger with fine liquor and offers to serve as the crew's brewer 4.

His drinks quickly make him popular aboard the ship. Rayleigh teaches him Haki and swordsmanship, while Zesi develops attacks combining both disciplines with vibrations. He eventually becomes one of Roger's right-hand men. His rivalry with Bullet begins when he deliberately steps forward to fight him, intending to win his allegiance before Roger does 5 6 9 11.

The Brunei Succession Dispute

Kate wants Zesi to inherit the Brunei Family because his strength could deter the Big Mom Pirates and their allies. Feiluo, resentful of losing his opportunity to lead, sends three Shadow Wings members to eliminate his older brother 18.

Zesi originally has no desire to remain family head. After the betrayal, however, he decides to take control temporarily, resolve the family's crises, and impose discipline before returning responsibility to Kate or Feiluo. He later turns Jason, Youpi, and Lampkin into Shadow Wings instructors, requiring them to work off a five-billion-Beli ransom debt 19 52.

Battles with Big Mom and Golden Lion

Zesi reveals his Tremor-Tremor Fruit Awakening during his confrontation with Big Mom, emerging unharmed from her berserk assault and attacking through remotely generated vibrations. He subsequently deactivates the awakening because its energy consumption is too severe for a prolonged battle 30 31 33.

Against Golden Lion, Zesi moves the fight away from the Brunei Family's base. Golden Lion's superior aerial control forces him onto the defensive, and his sword eventually shatters under the combined strain of vibrations and enemy attacks 57.

Impel Down and the Azure Emperor Pirates

After the Roger Pirates disband, Zesi invades Impel Down and fights through its defenders. He and Bullet emerge together, only to confront Sengoku and Garp outside. Zesi uses the encounter to test newly developed awakening techniques; Rayleigh and other former crewmates arrive aboard the Oro Jackson during the confrontation 68 78 79 83.

Zesi then gathers the core of his own crew: himself, Bullet, Shanks, Buggy, and Easter Egg. His emergence as the Azure Emperor attracts challenges from veteran New World pirates who resent a former Roger crewmate claiming an emperor's position 85 87.

Wano and Consolidation of Power

Zesi intervenes in Wano both as Oden's former crewmate and to earn the recognition of Wano's samurai and the Mink Tribe, whom he considers valuable recruits. He confronts Orochi and Kaido while leaving Bullet and the others to protect Toki's group in Kuri 90 92 94.

His growing reputation is reinforced by the deaths of Captain John, Silver Axe, and Fleet Admiral Kong at his hands, as well as his ability to destroy fleets with tsunamis. By this point, his standing as an Emperor of the Sea and the World's Strongest Person is no longer openly questioned 142.

He also develops the Azure Emperor Palace Shichibukai system. Moria, who initially rejects recruitment, accepts after two years working in Wano's mines. Zesi later persuades Crocodile to join by revealing that he knows Crocodile's secret 107 155 156 163.

From Pirate Territory to Federation

Zesi pursues technological and commercial development alongside military expansion. He seeks the Vinsmokes' expertise in Lineage Factors and raid suits, while also imagining modern communications and entertainment for his territory 177.

He opens Azure Dragon Pass through the Red Line and claims it for his crew, bluffing the World Government into negotiations despite being badly depleted by the attack. Later, he orders Azure Emperor's Decree No. 3 Missiles launched against the Beasts Pirates as a demonstration of force 204 206 249.

Following the Big Mom Pirates' surrender, he takes over Totto Land and incorporates the Charlotte Family into his organization. He establishes the Azure Empire Federation, brings his family to Whole Cake Island, and rescues Tom so that the Sea Train can connect the islands of his new nation 255 258 259 261.

At Kate's insistence, a selection of imperial spouses is held. Zesi chooses Hancock as empress and Nico Robin as noble consort, alongside other consorts. Five years later, he has more than a dozen children, providing the empire with heirs 258 261.

The Martial Soul Trial Revelation

Zesi's pirate-world life is subsequently revealed to have taken place within the Divine Illusion Realm as a Martial Soul trial. Brunei Zesi was originally an unmentioned extra in the One Piece setting; his knowledge of the plot allowed him to develop that character into the world's strongest person and obtain a unique Martial Soul 262.

After leaving the virtual pod, his Martial Soul registers at LV6 with more than nine million combat power. In the Divine Desolation World, he reaches sixth place on the Heavenly Supremacy Ranking and begins assembling a team to explore beyond Mercury's territory before its protection period expires 263 281 284.

Dafeng City and the Troll Wasteland

During the defense of Dafeng City, Zesi kills seventh-tier troll commanders and uses their Divine Essence Crystals to advance to the seventh tier. He discovers that his Heavenly Supremacy Ranking placement substantially increases the experience obtained from crystals 285 287 288.

His new strength allows him to fight the eighth-tier Cyclopean Troll King. Repeatedly cutting through the king's regenerating Sacred Body consumes its Sacred Origin, eventually prompting the king to flee. Zesi later guards his crew's campaign against the Troll Wasteland while studying new applications of his fruit 290 294 307.

He also confronts the Blood Fortress and attacks the Holy Church after it threatens his Martial Soul user. His clash with Saint John's mysterious relic ends in an enormous explosion, with the immediate outcome unresolved in the account 312 314 316.

Strengthening His Real-World Self

Despite his Martial Soul's power, Zesi's real-world body remains a vulnerability. He initially avoids conspicuous spending or training arrangements that might expose his identity to assassins, even continuing to rent a cramped studio apartment while possessing considerable wealth 319.

He joins the Martial Soul League after learning that participation strengthens the connection between a Martial Soul and its master. After advancing through the academy rankings, he enters the Leize Team and defeats the entire Ice Wolf Team alone with one Azure Dragon's Roar: Sword-Draw Slash 330 331.

Appearance

• Face: Handsome and refined, with features that make him appear younger than his actual age 105.
• Clothing: Dresses like a young gentleman sightseeing rather than a conventional pirate 105.
• Overall impression: His youthful, nonthreatening appearance leads enemies to underestimate the Azure Emperor 105.
• Sharingan: His eyes become blood-red and display a rotating complex pattern when his Mangekyō Sharingan advances 288.
• Combat aura: When fighting seriously, he can appear surrounded by black-and-red radiance that distorts the surroundings 73.

Personality

Zesi is ambitious, self-assured, and unwilling to submit to others, even while serving aboard Roger's ship. He consciously associates his identity as a transmigrator with exceptional potential; the narration links this pride, his powerful soul, and his ambition to the growth of his Conqueror's Haki 10 72.

He favors experimentation over preserving established methods. Rather than imitate the broad destruction he remembers from Whitebeard, he develops precise, layered, high-frequency vibrations. He willingly reveals new trump cards against powerful enemies because he believes he can invent stronger ones afterward 2 83.

His protectiveness coexists with coercive leadership. He moves dangerous battles away from his family's base and warns civilians to leave a battlefield, but also forces captives to work off debts and recruits former enemies when their abilities are useful 52 57 96 190.

Zesi enjoys taunting opponents and teasing acquaintances. He dislikes the epithet “Natural Disaster” enough to threaten a Celestial Dragon while demanding a replacement, proposing “Dragon Emperor” before becoming known as the Azure Emperor 10 63 64 92.

Romance initially unsettles him far more than battle. Having never dated in his previous life, he becomes anxious over the imperial spouse selection despite facing the World Government without comparable nervousness 258 259.

Abilities and Skills

Tremor-Tremor Fruit

• High-frequency attacks: Emphasizes frequency and layered follow-through rather than a single explosive impact. His sword attacks can continue applying force in successive waves 31 152.
• Body conditioning: Uses controlled vibrations continuously to strengthen his body and improve recoil tolerance, eventually maintaining the process even while asleep 2 5.
• Internal defense: Vibrations within his body obstruct penetrating attacks, supplementing his physical durability and Armament Haki 15.
• Vibration Sensing Radar: Detects distant surroundings through vibration waves. Its range can exceed his Observation Haki's range several times or even dozens of times over 5 223.
• Tsunamis: Can devastate fleets by stirring the sea; his reputation includes sending more than a hundred pirate crews to their deaths in one move 142.
• Sound transmission: Eventually transmits vibrations through sound with minimal recoil, sending Teach flying with a cold snort 243.
• Compressed vibration armor: At eighth-tier fruit mastery, condenses power around his fist like invisible armor and releases it instantaneously on impact, exceeding his earlier Space-Shattering Strike in destructive force 307.

Awakening

• Remote vibration sources: Creates vibrations directly beside an opponent rather than transmitting every attack from his own body 31.
• Vibration domain: Awakening affects the surrounding air, space, and nearby bodies 30.
• Early precision: Can generate ten million vibrations per second near an opponent, though gestures initially help him activate and control the attack 31 32.
• Early duration limit: During the Big Mom battle, estimates that one hour of continuous awakening would completely exhaust him 33.
• Recoil constraints: Before his later evolution, neither his body nor ordinary weapons can safely withstand the fruit's full awakened frequency 117.

Haki

• Armament Haki: Progresses from protective coating to colorless Haki, outward projection, and internal destruction. At seventh tier, it can counter a sixth-tier troll chief's annihilation power 11 72 290.
• Observation Haki: Supports evasive combat alongside vibration sensing. Initially lags behind his other Haki types; seventh-tier advancement finally grants Future Sight 10 223 290.
• Conqueror's Haki: Knocks out weaker opponents and, under the influence of his awakened fruit, can produce physical destruction such as shattering steel and sinking the ground 72 106.
• Fist intent: Condenses Conqueror's Haki into Divine Space Strike, attacking an opponent's mental composure as well as their defenses 82.

Movement and Aerial Combat

• Wave-Stepping Flash: Generates rapid vibrations beneath his feet and uses their recoil for explosive acceleration 10.
• Adjustable output: His early standard version uses more than a hundred vibrations; hundreds or thousands increase speed, while tens of thousands are reserved for desperate situations 10.
• Limits: Greater speed demands sufficient bodily durability and control, especially in his feet 10.
• Flight: Uses vibrational thrust to travel through the air faster than Geppo, though Golden Lion's Float-Float Fruit outclasses his aerial agility, coordination, and control 57.

Swordsmanship and Signature Techniques

Zesi's strongest early combat style combines swordsmanship, Haki, and Devil Fruit power 31 36.

More-More Fruit

• Attack amplification: Uses Moa Moa, Tenfold Shot to strengthen the sword attack that kills a troll chief 269.
• Sixth-tier output: Provides amplification ranging from three hundred to five hundred times 289.
• Seventh-tier output: Reaches thousandfold amplification and expands to recovery, defense, Haki, mental power, and the soul 289.
• Combined techniques: Uses Moa Moa Five Hundredfold Quake Frequency against the Holy Church's relic 316.

Sharingan

• Mangekyō advancement: Obtained through Divine Essence Crystal nourishment at sixth-tier perfection 288.
• Eternal Mangekyō advancement: Accompanies his seventh-tier breakthrough 288 289.
• Documented use: Activates it while resisting the Troll King's psychic assault 290.

Brewing and Administration

• Brewing and cocktails: Draws on his previous employment to produce varied liquor and mixed drinks for the Roger Pirates 5.
• Personnel management: Establishes performance-based training assignments for Shadow Wings instructors and recruits useful former enemies 52 190.
• Infrastructure planning: Promotes freight services and commissions Totto Land's Sea Train network 155 259 261.
• Technology policy: Seeks expertise in genetic research, raid suits, communications, and entertainment 177.

Equipment and Items

• Skillful Grade Sword: An early trophy blade gradually approaching Black Blade status through Armament tempering. It shatters sometime after his first battle with Kaido 15 31.
• Replacement sword: Used against Golden Lion, who breaks it after vibrations have already weakened the blade 57.
• Specially tempered metal bar: Made to withstand his vibrations and revealed during the confrontation with Sengoku and Garp 83.
• Azure Emperor Sword: His registered Martial Soul weapon. Initially removes a major weapon-durability obstacle, though Hundredfold Quake Frequency can still strain it severely 152 263 288.
• Divine Essence Crystals: Collected from defeated enemies and decomposed through the Martial Soul system to increase experience and improve abilities 269 287 288.

Relationships

• Wenlai Kate — Father. Recognizes Zesi as the family's strongest protector, presses him to inherit the Brunei Family, and later organizes the imperial spouse selection to secure heirs 24 258.
• Feiluo — Younger brother and succession rival. Sends Shadow Wings members against Zesi after fearing the loss of the family leadership 18.
• Roger — Former captain. Accepts him as brewer, praises his growth, and comes to rely on him as one of his right-hand men 4 6 11.
• Rayleigh — Haki and swordsmanship teacher. Helps Zesi overcome his early dependence on Devil Fruit power and later arrives among his reinforcements 5 83.
• Bullet — Persistent rival and core crewmate. Follows Zesi to continue challenging him; later wagers a ten-year claim to the captaincy on their duel 85 187.
• Shanks — Former Roger crewmate and division commander. Develops Future Sight specifically to beat Zesi; Zesi intervenes when Admiral Thunder Python threatens him 163 164 223.
• Buggy — Former Roger crewmate and founding member of Zesi's crew. His desire to become a division commander helps motivate him to train 85 104.
• Kozuki Oden — Former crewmate and ally. Zesi intervenes against Kaido and Orochi and helps protect Oden's family 90 94.
• Kaido — Recurring opponent and occasional business partner. Challenges Zesi's emperor status and later places a hundred-billion-Beli order while requesting a fight without Divine Space Strike 94 149.
• Big Mom — Enemy, prospective ally, and eventual subordinate. Proposes an alliance against the strengthened Marines before her forces ultimately surrender to Zesi 149 255.
• Katakuri — Becomes an Azure Emperor Apostle after Totto Land's takeover. Zesi regards his devotion to his siblings as the foundation of his loyalty 255.
• Moria — Defeated opponent recruited into the Azure Emperor Palace Shichibukai after two years in Wano's mines 155 156.
• Sebast — Former enemy recruited as steward; later supplies intelligence through the Secret Affairs network 190 259.
• Tom — Shipwright Zesi rescues from a suspicious prosecution and appoints chief engineer of Totto Land's Sea Train project 259 261.
• Hancock — Trained by Zesi alongside her sisters; later chosen as his empress 177 261.
• Nico Robin — Chosen as his noble consort 261.
• Ning Xueyao / Xuesili — Ning Xueyao's Martial Soul is Xuesili, one of Zesi's pirate-world consorts. Zesi recognizes her after an intimate encounter but conceals his own identity 321.
• Jiang Qin — Welcomes Zesi into the Leize Team after arranging an opportunity to assess and recruit him 331.

Notable Quotes

“Because of me, this Devil Fruit will shake the world!” 5

“You want to take my position as an Emperor of the Sea? Come take it if you can. But I'll shatter all your fantasies!” 94

“I've seen your sincerity. Most importantly, I hate giving up.” 331