Netero

Biodata

Feature	Value
Name	Isaac Netero
Alias(es)	Chairman Netero; Old Netero
Species/Race	Human
Gender	Male
Age	At least 120 chronologically; temporarily restored to a thirty-year-old body through rejuvenation 273 297
Affiliation	Hunter Association; Twelve Zodiacs
Occupation/Role	Former Chairman of the Hunter Association; martial artist; Hunter
Status	Alive; publicly declared dead before retiring from the chairmanship; last directly shown at Colton Manor before Leo's departure for another world 327 333 462
First Appearance	Chapter 107

Power Progression

Stage / Realm / Level	Chapter	Notes
Elderly fighting state	107–275	Though he claimed to retain only half his peak strength, he remained an Ultimate-level Enhancer and could wield the 100-Type Guanyin Bodhisattva. Leo ultimately surpassed this state in their later spar. 107 71 275
Nen-sealed state	260–262	Purgatory sacrifices his life to activate the Hellfire Curse Song, binding Netero and preventing him from using Nen during Jade's takeover of Heaven's Arena. This suppression is temporary, as Netero later resumes using his abilities. 260 262 273
Rejuvenated peak state	297–317	Uses the Witch's Rejuvenation Potion to return to his thirty-year-old body and peak power; his aura clashes with Leo's strongly enough to shake Hunter Association headquarters. This state lets him employ the Ninety-Ninth Hand repeatedly against Meruem before using Zero Hand. 297 315 316
Post-retirement “Old Netero” state	342–392	Continues regular sparring with Leo after resuming his elderly appearance. His 100-Type Guanyin Bodhisattva remains formidable, although it cannot damage Leo's later body or Nen-tool armor. 342 356 391 392
Nitrolomi-extended lifespan	422	Eats a Nitrolomi plant supplied by Leo, substantially extending his lifespan and reducing the danger of dying from old age. 422
Later martial-training state	454	Remains an active fighter after his lifespan extension. He defeats Hisoka with two Bodhisattva palm strikes, then switches to unarmed martial-arts training and repeatedly overwhelms him through technique. No new Nen proficiency rank is stated. 454

Background / History

Netero was regarded as the world's strongest Nen user half a century before the Hunter Exam. He once explored the Dark Continent alongside Zigg Zoldyck and Linne Horsdoeuvre, but their expedition turned back before crossing its threshold; Netero later described the continent simply as “too big.” 107 119

At the age of forty-six, Netero believed that both his body and martial arts had reached their limits. He then began performing ten thousand straight punches of gratitude each day, combining prayer, breathing, stance, and punching. The first day's routine took more than eighteen hours; after two years, he could finish before nightfall, and after passing fifty, he could complete it in less than an hour. Afterward, he traveled the world challenging martial-arts schools, defeated every opponent he encountered, and became the world's strongest. 275

A recorded message left for the Zodiacs revealed that a Dark Continent expedition had ended in complete failure, causing heavy casualties and bringing back a new calamity. Netero urged the Association to confront the continent's dangers and return with hope. 345

In that message, Netero also stated that he had visited the New World twice in his youth. He distinguished its demands from his own martial ambitions: he sought individual opponents against whom victory and defeat could be determined, whereas the continent required an ongoing struggle against nature. He had forbidden Beyond from returning while he remained alive and prohibited the Association from traveling there. Morel likewise recalled that Netero had banned Association expeditions and sealed related information after disastrous losses among exploring Hunters. 254 345

As Chairman of the Hunter Association, Netero regularly left political investigations and internal conspiracies to younger Hunters, including Leo and Mizai Istom. He was nevertheless feared as a figure capable of personally eliminating powerful threats, and his authority carried weight even among V5 officials. 131 162

He met Leo during the Hunter Exam and accepted Leo's request for a spar. Netero's technical superiority initially overwhelmed Leo, but he became invested in Leo's extraordinary growth and continued to train against him. 107 109 112 113

After losing a later all-out spar to Leo, Netero disclosed that V5 had asked him to place Leo under restrictions and supervision. He chose not to do so, deciding instead to watch over Leo and intervene only if necessary. 275

Appearance

Netero is an elderly man with white hair and a beard, usually dressed in a loose white martial-arts uniform. His demeanor and clothing contrast with the immense pressure of his presence. 107

• White hair and beard in his elderly state. 107
• Often keeps his hands tucked into his sleeves. 107 298
• Wears a white shirt marked with the character “Heart” when fighting seriously. 272 298
• After rejuvenation, appears around thirty years old, with long white hair, a broad, muscular build, firm skin, and bright eyes. 297
• His retirement recording instead describes his younger appearance as blond-haired, with sharply defined features and vigorous eyes. 333
• After retiring, he is again referred to as “Old Netero” while privately sparring with Leo. 342

Personality

Netero is playful, mischievous, and fond of watching others react to his schemes. His retirement announcement, election conditions, and posthumous declaration of Leo as Chairman all show his willingness to create chaos for his own amusement. 333 339

Beneath that levity, he is defined by a powerful love of martial arts. He values challengers, appreciates combat talent, and gives concise but incisive guidance to fighters. Leo's rapid growth rekindles Netero's passion for battle. 109 110 276

His devotion to martial arts is rooted in gratitude and self-challenge. When he reached a perceived limit in middle age, he transformed himself through years of daily training rather than accepting stagnation. 275

He follows his principles even when confronted with the Hunter Association's darker history. During Jade's takeover of Heaven's Arena, Netero refused to abandon innocent hostages or renounce his belief that exceptionally heinous Hunters must be stopped. 262

Defeat does not diminish his enthusiasm for combat. Even when Leo becomes too durable for him to injure, Netero continues visiting every three days for sparring and leaves bruised but delighted. He later shows similar patience toward Hisoka's repeated demands for another fight, turning their encounters into lessons in fundamental martial technique. 342 454

Netero can also be gentle and attentive. He listens warmly to Gon and Killua's stories, and before Leo leaves for another world, he hears his recollections and Dark Continent experiences before offering a simple, supportive farewell. 260 462

Abilities & Skills

Ultimate Enhancement Proficiency

Netero is listed as an Ultimate-proficiency Enhancement-type Nen user. 71

• Combines immense aura reserves with exceptional physical strength, speed, and endurance. 272 297
• His aura is described as pure fighting spirit, honed through decades or centuries of combat. 272
• Even in old age, he could contend with Leo and repeatedly spar with him. 273 342
• His Ultimate ranking represents mastery of his Nen category rather than a direct numerical ranking of his combat strength or individual ability. 71

Martial-Arts Mastery

Netero's greatest advantage is his combat experience and technical precision rather than raw physical force. 109

• Identifies openings in an opponent's exertion, shifting center of gravity, and transitions between attacks. 109 273
• Evades barrages with minimal movement, then counters at the precise instant an opponent's old force has ended. 109 110
• Provides practical combat advice, such as identifying gaps in Little Azure's scales and improving team attack timing. 276
• Developed his martial art through a regimen of ten thousand daily punches of gratitude, eventually completing the exercise in less than an hour. 275
• Can deliver penetrating palm strikes that transmit force through an opponent's muscles and bones toward the internal organs. 110
• Repeatedly defeats Hisoka without using the Bodhisattva, relying on footwork, body movement, timing, and precise methods of exerting force. 454

Aura Concealment & Perception

Netero's control allows him to conceal his presence with extraordinary precision. When he first joins Leo and the examiners aboard the airship, Leo fails to detect either his approach or the moment of his appearance. Even while visible, he seems to blend into his surroundings without exposing a detectable aura or opening. 107

• Uses En to perceive the approaching post-mortem aura of Shaiapouf and Youpi during his battle with Meruem. 316
• Can distinguish those aura masses from the presences of living creatures, although he cannot intercept them before Meruem absorbs them. 316

100-Type Guanyin Bodhisattva

Netero manifests a massive golden Guanyin statue with countless arms, each capable of launching devastating palm strikes after he brings his hands together. 110 111 311

• First Hand — A powerful initial palm strike; it left only a faint mark on the Ant King. 312
• Second Hand and Fourth Hand — Used alongside Third Hand in a nearly simultaneous three-palm assault that seals Leo's escape routes during their rematch. 273
• Third Hand — A pincer-like attack that the Ant King forcibly separated through raw strength. 312
• Ninety-Ninth Hand — A high-aura-consumption technique used to overwhelm the Ant King; rejuvenation allowed Netero to use it consecutively. He also forms the Ninety-Nine hand sign to unleash the multi-arm barrage that incapacitates Neferpitou. 300 315
• The technique can create a sustained, near-impenetrable barrage that keeps opponents at range. 274 315
• Leo eventually broke through its palms by destroying the statue's arms faster than Netero could sustain them. 275
• Netero used an accelerated barrage of its arms to overwhelm Neferpitou and leave her unable to continue fighting effectively. 300
• In later training, its attacks fail to visibly damage Leo's Strike Freedom Gundam armor or his larger mech form. 391 392
• Against Hisoka, the first palm sends him into a training-room wall, and the second knocks him unconscious with fractured ribs. Hisoka requires Life Water to recover. 454

Zero Hand

Netero's ultimate attack is a massive aura laser released after exhausting his other options. 316

• Used against the Ant King after the Ninety-Ninth Hand failed to defeat him. 316
• Repositions the Guanyin behind the target, encloses the opponent within its palms, and fires the concentrated aura from the statue's mouth. 316
• Against Meruem, the beam is approximately five meters wide and continues for thirty seconds, leveling the surrounding area and leaving a crater over a hundred meters across and more than thirty meters deep. 316 317
• Drains Netero severely, leaving him exhausted and unable to continue fighting at full capacity. 316 317
• The Ant King survived the attack and emerged completely unharmed, with his earlier injuries fully regenerated after absorbing his Royal Guards' post-mortem aura. 316 317

Rejuvenated Body

The Witch's Rejuvenation Potion restored Netero to his thirty-year-old body and peak condition. 297

• Restored his vitality, physique, and aura to a level greater than Leo expected. 297
• Netero consumed ninety of the one hundred rejuvenation pills to restore his body by ninety years. 297
• Allowed him to use high-consumption techniques more freely during his battle with the Ant King. 315
• Before rejuvenation, using Ninety-Ninth Hand once required him to preserve enough remaining aura to continue fighting; afterward, he could perform it consecutively. 315
• Retained his memories, temperament, and martial experience despite his younger appearance. 297 333

Lifespan Extension

Netero later consumes Nitrolomi, one of the Dark Continent's “Hopes,” after Leo brings the plant to him. 422

• The plant significantly extends his lifespan. 422
• Netero accepts and eats it without hesitation, demonstrating his trust in Leo's judgment. 422

Relationships

• Leo — Challenger, sparring partner, and eventual successor as Hunter Association Chairman. Netero recognizes Leo's growth, loses to him in a later spar, and secretly appoints him Chairman through a recorded declaration. They continue sparring privately after Netero's retirement, and Leo later brings him Nitrolomi to extend his life. Before Leo leaves for another world, the two reminisce at Colton Manor and Netero gives him his blessing to depart. 107 275 339 342 422 462
• Biscuit — Netero's eldest disciple. Their exchanges are familiar and teasing, particularly when he suggests that she retire. 353 387
• Beyond Netero — His son. Netero asks Leo to spare Beyond's life if possible despite Beyond's Dark Continent plans. He had forbidden Beyond from returning to the continent while he remained alive, and his recorded message challenges the Association to confront its dangers and bring back hope. 344 347 345
• Meruem, the Ant King — Netero's final major opponent during the Chimera Ant conflict. Their battle pushes Netero to use the Ninety-Ninth Hand and Zero Hand. 311 315 316
• Neferpitou — A Royal Guard whom Netero fights after returning to his peak condition; he finds her strength “interesting” and overwhelms her with the 100-Type Guanyin Bodhisattva before Leo kills her. 298 300
• Mizai Istom — A Zodiac entrusted with handling serious Association matters alongside Leo when Netero declines direct involvement. 131 139
• Jade — Antagonist who exploits Purgatory's sacrificial curse to seal Netero's Nen during the Heaven's Arena takeover. 260 262
• Purgatory — Sacrifices his life to bind Netero and seal his Nen. Netero later recognizes that Purgatory's post-mortem hatred is being controlled and reacts with sorrow upon learning of his persecution at Canaan Detention Center. 260 262
• Ging Freecss — Recognizes that Netero's death is a ruse and visits him at Colton Manor. Netero offers him the opportunity to enter the Chairman election, but Ging declines and indicates that Leo is the more appropriate successor. 332
• Hisoka — Later sparring partner and recipient of martial-arts instruction. Netero initially overwhelms him with the Bodhisattva, then trains him through repeated unarmed exchanges. Hisoka's persistence earns continued engagement rather than dismissal. 454
• Gon and Killua — Hunter Exam participants who later visit him at Heaven's Arena and recount their experiences over tea. When Purgatory binds him, Netero immediately warns Gon not to touch the curse's tentacles. 115 260
• Pariston Hill — Despite his chaotic disposition, Pariston deeply respects Netero. Netero understands Leo's hostility toward him and later agrees not to interfere with Leo's plans to eliminate him. 107 297 327

Story Role / Major Arcs

Hunter Exam

Netero arrives during the exam after Leo rescues failed candidates from the World Tree. Intrigued by Leo's desire to challenge him, he accepts a spar once they reach the Trap Tower. 107 108

Before agreeing, Netero asks Leo to promise him a favor and suggests joining the Zodiacs as a possible request. Leo readily accepts, but Netero reserves the favor for a later occasion rather than immediately requiring him to join. 108

He oversees the final examination's single-elimination format, explaining that the last remaining loser would fail while everyone else could pass. 115

The final test requires only one victory to pass, while defeated candidates continue through the bracket. Netero also establishes that killing an opponent results in immediate disqualification and ends the examination. Killua's killing of Bodoro consequently leaves the other nine candidates qualified as Hunters. 115

Training and Sparring with Leo

Netero initially defeats Leo through superior technique, repeatedly exposing the gap between raw power and combat mastery. He then reveals the 100-Type Guanyin Bodhisattva at Leo's request. 109 110

During their first Bodhisattva exchange, Netero's palms repeatedly repel Leo's attempts to cross the ten-meter gap. Leo eventually loses consciousness after approximately three minutes, and Netero praises his performance before instructing the examiners to carry him back to the airship. 111

Leo challenges him daily, gradually closing the distance he can reach against the Bodhisattva. Netero increasingly takes the battles seriously and rediscovers his enthusiasm for martial arts. 112 113

On the tenth day, Leo reaches within five meters and destroys several of the statue's arms with Final Strike. Netero responds with a full minute of palm attacks, but Leo remains conscious and upright on his knees in the resulting crater. 113

During their later spar at Colton Manor, Leo breaks through the Guanyin Bodhisattva and reaches Netero directly. Netero admits defeat and acknowledges that Leo has surpassed him. 272 275

Afterward, Leo again offers him a means of restoring his prime, but Netero postpones the decision. He spends several more days relaxing at the manor and observing the others' training before returning to the Association. 275 276

Heaven's Arena Takeover

During Jade's coup at Heaven's Arena, Purgatory sacrifices his own life to invoke the Hellfire Curse Song, binding Netero and sealing his Nen. 260

While held hostage, Netero confronts Jade over Black Shadow, the Canaan Detention Center, and the Hunter Association's past. He refuses to compromise his principles despite Jade's accusations. 261 262

Grucia's confession reveals that persecution continued despite Netero's prohibition and that a Zodiac had instructed the official to conceal the crimes. Netero realizes that the Association's wrongdoing is more extensive than he knew, while maintaining that Black Shadow's own exceptionally heinous crimes justified punishment. He insists that the arena's innocent people should not become targets of Jade's revenge. 262

Chimera Ant Conflict

Netero personally calls Leo and asks him to accompany him to NGL as the Chimera Ant crisis escalates. 296

Netero returns to peak condition with the Witch's Rejuvenation Potion and joins Leo in NGL. He first battles Neferpitou, testing the Royal Guard with the 100-Type Guanyin Bodhisattva. 297 298

After gaining the upper hand over Neferpitou, Netero employs a rapid multi-arm barrage that leaves the Royal Guard buried in a massive crater. Leo subsequently kills Neferpitou himself. 300

Netero and Leo then support a coordinated campaign around the nest, leaving the other Hunters to clear ordinary forces while they handle stronger Squadron Leaders. Netero kills a Squadron Leader during the campaign and later joins Leo in the opening attack of Nico's valley ambush, driving another leader into the ground with a palm strike. 301 304 305

Leo arranges a one-on-one confrontation between Netero and the Ant King by capturing Shaiapouf and Menthuthuyoupi. Netero fights Meruem alone in the palace plaza, ultimately using Zero Hand before being defeated and evacuated by Leo. 311 316 317

During the battle, Netero keeps Meruem outside a twenty-meter perimeter for approximately five minutes and repeatedly uses Ninety-Ninth Hand to accumulate injuries. The arrival and absorption of the Royal Guards' post-mortem aura restore and strengthen Meruem, forcing Netero to use Zero Hand while the King is occupied with the fusion. The attack fails to injure the empowered King, leaving Netero completely exhausted. 315 316 317

Although physically defeated, Netero remains defiant and rejects Meruem's claim that humanity cannot rival the ants. Leo arrives, helps him onto Little Azure, and sends him away before taking over the battle. 317

Retirement and Succession

Three days after the Chimera Ant incident, the Association announces Netero's death according to his own instructions. In reality, he is recovering at Colton Manor and preparing to relinquish leadership to younger Hunters. During a private conversation, he agrees not to interfere with Leo's pursuit of Pariston. 327

Ging later visits the manor after deducing the deception. Netero offers him the chance to run for Chairman, but Ging declines and points to Leo as a suitable successor. 332

Netero publicly announces his retirement and imposes a 95% voter-turnout condition on the election for the next Hunter Association Chairman. 333

Although Leo does not want the position, Netero's recorded “last words” declare Leo the thirteenth Chairman immediately upon his arrival at the election venue. 339

The recording specifies that it should be played if Leo participates in the election. Netero makes the additional succession declaration with obvious delight, flashes a V-sign, and leaves Leo caught off guard. Leo ultimately accepts the position after considering the resources and legitimacy it provides and the possibility of continued V5 hostility if he refuses. 339 340

After his supposed death, Netero continues living privately, spars with Leo regularly, and remains involved in discussions surrounding Beyond and the Dark Continent. 327 342 347

Netero's later recorded message warns the Zodiacs that a previous Dark Continent expedition ended in disaster and brought back a calamity. The message helps motivate the Association's decision to undertake the dangerous mission themselves. 345

Post-Retirement Training and Longevity

Netero remains an active training partner for Leo. He tests Leo's physical defense with the 100-Type Guanyin Bodhisattva and later evaluates the defensive strength of Leo's Nen-tool transformations, including Strike Freedom Gundam and the Calamity King mech. 356 391 392

During the armor experiments, Netero also observes Leo's theatrical transformation into Masked Rider Calamity King. When Leo becomes embarrassed, Netero teasingly pretends to have seen nothing before leaving. 392

After Leo obtains Nitrolomi, he brings a plant to Netero to prevent him from eventually dying of old age. Netero eats it without hesitation. 422

Netero later spars with Hisoka. His first two Bodhisattva palm strikes send Hisoka into a wall and knock him unconscious, but Hisoka asks to continue as soon as he recovers with Life Water. In subsequent sessions, Netero stops using the statue and relies on fundamental martial techniques, sending Hisoka flying more than a dozen times each day while Hisoka repeatedly resumes his stance. 454

Farewell Before Leo's Departure

Before leaving the Hunter world, Leo returns to Colton Manor and finds Netero in the courtyard. The two sit beneath the porch and talk at length about their first challenge and Leo's experiences on the Dark Continent. Netero listens, pats Leo's shoulder, and encourages him to go on without attempting to prevent his departure. 462

Notable Quotes

“Mm—I lost.” 275

“Don't underestimate humanity, Ant King!” 317

“The moment you stop challenging yourself is the moment your life ends.” 344

“I am grateful—for everything I experienced—before meeting you!” 274

“I hereby declare that Leo will succeed me as the thirteenth Chairman of the Hunter Association, effective immediately!” 339

“All right, go on.” 462

Trivia

• Netero enjoys pink drinks, tea, pastries, and desserts. 131 327
• He arranged for Leo to become Chairman despite Leo openly rejecting the position beforehand. 333 339
• He is capable of treating a serious retirement announcement like a prank, smiling broadly while discussing his own supposed death. 339
• Before attaining his legendary standing, he trained by throwing ten thousand straight punches of gratitude every day. 275
• His charisma inspires the Zodiacs to alter their appearances to match their animal titles, and even Pariston sincerely respects him. 107
• His office and the background of his Dark Continent message feature a scroll bearing the character “Heart,” matching the motif on his serious-combat shirt. 296 345
• Hisoka's later training repeats Leo's earlier pattern of being repeatedly repelled by Netero and immediately returning for another exchange. 111 454

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