Killua

Biodata

Feature	Value
Name	Killua Zoldyck
Original Name	奇犽
Species/Race	Human
Gender	Male
Affiliation	Zoldyck family; Gon’s traveling group; VIP Studio 56 70 252
Occupation/Role	Trained assassin, Nen user, Heavens Arena competitor; later assigned to supervise VIP Studio’s construction crew alongside Gon 44 78 88 252
Family Home	Kukuroo Mountain, Republic of Padokea 61
Status	Alive; last shown taking a construction-supervision assignment with Gon 252
Hunter Exam Result	Disqualified for killing Pokkle in the final phase 59 60
First Appearance	Chapter 13 — “The Main Cast Assembles”

Power Progression

Stage / Realm / Level	Chapter	Notes
Heavens Arena: direct promotion to the 50th floor	72	Knocks out his opening opponent with a knife-hand strike before the referee can follow the movement.
Heavens Arena: 100th floor	73	Advances from the 50th floor over several days, relying on speed and precision.
Heavens Arena: victory on the 101st floor	74	Defeats Zushi after Wing orders Zushi to stop releasing aura. The encounter exposes Killua’s vulnerability to Nen pressure.
Heavens Arena: 110th floor	75	Continues climbing while seeking the truth behind Zushi’s power.
Heavens Arena: 130th floor	75	Maintains the group’s rapid advance through one-hit victories.
Heavens Arena: 160th floor	75	Reaches another documented floor during the same climb toward the 200th.
Nen awakening and Ten	78	Wing forcibly opens his Aura Nodes with Ren. Killua learns Ten within ten minutes, containing his escaping life energy.
Heavens Arena: 200th-floor registration	78	Uses Ten to withstand Hisoka’s oppressive aura and registers before midnight.
Ren training	86	Produces unusually strong, refined aura for a beginner when Wing begins the next stage of instruction.
Electricity-based Nen: first documented combat use	88	Converts his Nen into high-voltage current and sends it through Riehlvelt’s electrified whips. The acquisition process is not shown.
Extermination-team qualification	170	Earns a wooden token after training against Knuckle and Shoot; their assessment credits the boys’ persistence and teamwork.
Godspeed: first documented use	172	Evades a Chimera Ant captain’s venomous quills and appears behind it for a lethal strike. The technique’s acquisition is not shown.

Background / History

Assassin upbringing

Killua grows up in the Zoldyck family’s tightly controlled assassin household. His childhood includes torture training that leaves him able to endure powerful electric shocks. He is already familiar with Heavens Arena from a visit at age six 71 88.

His mother, Kikyo, calls him the family’s most gifted heir and insists that friendship will weaken him. Illumi reinforces that isolation by implanting a Nen needle in his head while he is young, compelling him to flee from stronger opponents 57 67.

Hunter Exam

Killua enters the exam after running away from the family business, seeking an interesting experience. He meets Gon and Luo Ye during Satotz’s underground endurance run and quickly becomes comfortable with their banter 13 14.

His assassin skills become unmistakable in Trick Tower, where he kills a prisoner with a single strike. During the badge-hunting phase, he takes a different role: organizing a three-person plan in which Luo Ye occupies Hisoka, Killua watches for an opening, and Gon steals the badge 29 41 43.

• Fourth-phase success: All five members of his group pass, but seeing Gittarackur leaves Killua tense and withdrawn 51.
• Netero’s challenge: He uses Rhythm Echo in an unsuccessful attempt to take Netero’s volleyball, then reacts angrily when Netero questions the fear constraining his movements 52 53.
• Illumi’s revelation: Gittarackur reveals himself as Illumi, threatens Killua’s friendship with Gon, and explains the implanted needle 56 57.
• Disqualification: Emotionally overwhelmed, Killua tears out Pokkle’s heart before Pokkle can finish surrendering. He leaves the venue without responding to his friends 59 60.

First return to Kukuroo Mountain

After returning home, Killua is confined in a basement, suspended by chains and covered in whip marks. Silva releases him and listens as he describes his friendship with Gon. Their conversation ends with a blood oath that Killua will never betray his friends 69.

Killua reunites with Gon, Leorio, Kurapika, and Luo Ye, who have traveled to the estate to bring him back. The five leave together through the Testing Gate; Killua looks back at Kukuroo Mountain without the fear that previously defined it for him 70.

Heavens Arena and Whale Island

Killua recommends Heavens Arena as a place to earn money, fight, and obtain underworld information. His easy victories initially reinforce his confidence, but Zushi’s aura reminds him of Illumi and drives him to question Wing’s misleading explanation of the power 71 73 74 75.

Wing eventually teaches him Nen alongside Gon and Kurapika. After learning Ten and Ren, Killua demonstrates electricity-based Nen against Riehlvelt. He later travels to Whale Island, where Mito’s welcoming household gives him an unfamiliar experience of ordinary family warmth 78 86 88 91 92.

Yorknew City and Greed Island

In Yorknew, Killua researches the underground auction and warns his companions about the Mafia and Phantom Troupe. He and Gon nevertheless pursue Nobunaga and Machi for their bounties, only to be ambushed and captured. Killua blames his own overconfidence while watching Gon endure repeated defeats at Nobunaga’s hands 95 109 110.

Luo Ye rescues both boys. Later, Killua watches Silva and Zeno fight Chrollo and realizes how far his family’s strongest fighters stand above his current abilities 112 117 118 119.

• Greed Island entry: Attends the player-selection trials with Gon 130 132.
• Biscuit’s intervention: Initially dismisses Biscuit when she declares that she will become their teacher 137.
• Bomber confrontation: Knocks Sub unconscious as Sub tries to flee 143.
• Razor’s match: Supports Luo Ye from behind, channeling his Nen into his arms to keep Luo Ye from being driven out of bounds 147.
• Game completion: Accompanies Gon as the group selects its three cards to take into the real world 149.

Chimera Ant operation

Killua accompanies Gon and Kite into the Chimera Ant crisis. Neferpitou’s malicious En overwhelms him, but he recognizes that staying near Luo Ye’s battle would only endanger the group and persuades Gon to retreat 151 159 161.

After earning a token in Netero’s qualification trial, he joins the East Gorteau operation. He kills two Ant captains during the covert advance and enters the palace with Gon under orders to occupy Neferpitou 170 172 176 177.

His efforts increasingly center on protecting Gon. He cannot react quickly enough to intercept Pitou’s attack, later carries the unconscious Gon with maximum-output Godspeed, and calls for retreat when the Poor Man’s Rose spreads poisonous wind across the battlefield 184 186 187 188.

Saving Gon

When doctors conclude that Gon’s Death Contract has caused damage beyond conventional treatment, Killua is devastated and blames himself. Luo Ye’s suggestion that the Zoldycks might possess a remedy reminds him of Alluka and Nanika, giving him a concrete rescue plan 192 193.

Killua returns to Kukuroo Mountain despite fearing that Illumi will kill Gon to prevent the wish. Luo Ye defeats the estate’s resistance and overwhelms Illumi; seeing his brother rendered helpless weakens Killua’s long-standing terror of him 194 195 196.

Killua reaches Alluka and asks Nanika to heal Gon. Once Gon wakes, Killua embraces him in tears. His relief turns to alarm when Luo Ye deliberately refuses Nanika’s demands, while Killua holds Alluka after Nanika retreats and she falls asleep 197.

Later appearances

• Fifth-level cargo hold: Accompanies Luo Ye, Gon, and Kurapika into the destructive battle between Hisoka and Chrollo’s newly recruited Spiders 243.
• VIP Studio headquarters: Questions Luo Ye’s use of Dark Continent calamities as construction materials and considers the workers’ treatment harsher than assassin-family discipline. Luo Ye subsequently leaves him and Gon in charge of supervising the crew 252.

Appearance

Killua is a silver-haired boy with blue, catlike eyes, usually dressed in loose casual clothing 59 69 70 88.

• Mischievous grin: Returns prominently during his reunion with his friends 70.
• Transformable fingernails: Lengthens them into sharp claws when preparing to fight 136 157 177.
• Blue electrical effects: High-voltage current gathers around his hands and feet when he uses his electricity-based techniques 172 186.
• Post-confinement injuries: Rejoins the group wearing facial bandages from Kikyo’s attempt to stop him 70.

Personality

Killua is playful, competitive, and quick to tease. He mocks Leorio’s apparent age, trades insults comfortably with Luo Ye, and initially dismisses Zushi and Biscuit. His pride is backed by genuine assassin expertise, though unfamiliar Nen abilities repeatedly unsettle him 13 73 74 137 166.

He often acts as the group’s practical counterweight. He breaks plans into roles, requests detailed information about opponents, and warns against Luo Ye’s recklessness. During the Hisoka badge theft, his patience and battlefield reading keep Gon from acting too early 41 42 43 46 95.

His upbringing produces a sharp contrast between emotional distance and personal loyalty. He can kill without visible hesitation, yet becomes deeply protective of Gon and Alluka. Illumi’s conditioning leaves him vulnerable to fear and self-doubt, while friendship gives him reasons to challenge that control 29 57 59 109 192 197.

Ordinary affection initially makes him awkward. Visiting Gon’s home feels unfamiliar, but Mito’s kindness gradually puts him at ease, and he enjoys the freedom of sharing a family meal 91 92.

Abilities & Skills

Assassination and close combat

• Speed and precision: Uses knife-hand strikes to incapacitate opponents with minimal movement 72 143.
• Claw attacks: Transforms his hands into cutting weapons capable of decapitating Ant captains or piercing a heart 172.
• Lethal force: Kills a Trick Tower prisoner instantly and tears out Pokkle’s heart during the final exam 29 59.
• Power ceiling: Phinks knocks him unconscious before he can meaningfully fight back; Neferpitou moves faster than his body can respond 109 184.

Rhythm Echo

• A Zoldyck movement technique used to disorient an opponent before attacking 52 74.
• Does not allow him to reach Netero’s volleyball despite more than ten minutes of effort 52.
• Used against Zushi before Zushi releases the aura that frightens him into retreat 74.

Nen fundamentals

• Ten: Contains his aura around his body and protects him from Hisoka’s hostile aura pressure 78.
• Ren: Produces strong, sharp, refined aura during Wing’s instruction 86.
• Zetsu: Suppresses his presence while following Phantom Troupe members with Gon; the Troupe detects the pursuit anyway 109.
• Ability assessment: Identifies Nen constructs and considers the restrictions behind abilities such as the Bomber’s explosives 82 139.

Electrical resistance and electricity-based Nen

• Resistance: Childhood torture training leaves him unaffected by Riehlvelt’s high-voltage whips 88.
• Nen-generated current: Converts aura into an even stronger electrical discharge and returns it through the whips 88.
• Electrified claws: Combines cutting attacks with blue high-voltage current; his strikes leave charred wounds on Ant captains 172.

Godspeed

• Evasion: Moves fast enough to avoid a barrage of venomous quills and leave an afterimage 172.
• Transport: Carries unconscious Gon across the wilderness at maximum output 186 187.
• Limits: Luo Ye moves faster than Killua’s maximum-output Godspeed. Against Pitou’s initial lunge, Killua cannot react in time to intercept her 184 187.

Tactics and intelligence gathering

• Battlefield command: Designs and directs the operation to steal Hisoka’s badge 41 43.
• Team analysis: Requests opponents’ movement patterns, habits, and individual traits before confronting the Amori brothers 46.
• Underworld research: Uses dark-web information to track Yorknew’s auction activity and the Phantom Troupe threat 95.
• Threat recognition: Identifies traps and urges Gon to escape, although his warning comes too late during the Troupe ambush 109.

Nanika’s special commands

• Knows the ordinary request-and-wish rules and warns that four consecutive refusals can cause catastrophic deaths 193.
• Asks Nanika to heal Gon, restoring his body and ruined Aura Nodes 197.
• Has a unique privilege allowing him to give Nanika orders without paying a price; Luo Ye interrupts before he can use the additional order he intends to give after Gon’s recovery 197.

Equipment / Items

• Skateboard — Uses it while moving through the Hunter Exam’s underground tunnel 13.
• Limited-edition microcomputer — Researches dark-web reports about Yorknew’s criminal activity 95.
• High-explosive smoke bomb — Carries an upgraded version in his bag; Luo Ye steals and uses it to escape Nobunaga 112.
• Chibi Killua figurine — Receives it from Luo Ye as a souvenir commemorating the successful estate rescue 70.

Relationships

• Gon — Closest friend and frequent combat partner. Killua swears never to betray him, repeatedly protects him in battle, and turns to Nanika when ordinary medicine cannot save him 69 109 187 197.
• Luo Ye — Friend, teammate, and VIP Studio boss. Killua trusts his strength but regularly challenges his recklessness and exploitative business practices 41 44 95 197 252.
• Leorio — Friend whose teasing exchanges with Killua conceal genuine affection; Leorio joins both the estate rescue and the effort to recover him from the Troupe 60 70 110.
• Kurapika — Friend and tactical collaborator. Accepts Killua’s help during the badge hunt and later warns him about pursuing the Troupe’s bounty 45 46 107.
• Illumi Zoldyck — Older brother and principal source of psychological control. His implanted needle enforces retreat from stronger opponents, and he later attempts to kill Gon to prevent Killua from using Nanika 56 57 195 196.
• Silva Zoldyck — Father. Releases Killua from confinement and accepts his blood oath of loyalty to his friends; Killua later witnesses the enormous gap between their combat abilities 69 118.
• Kikyo Zoldyck — Mother. Regards him as a perfect assassin heir and treats his friendships as corruption 67.
• Zeno Zoldyck — Grandfather. One of the family’s strongest fighters, whose battle with Chrollo both frightens and educates Killua 117 118.
• Alluka Zoldyck — Younger sister. Killua respects her identity, reunites with her affectionately, and protects her when she falls asleep after Nanika’s confrontation with Luo Ye 192 197.
• Nanika — Alluka’s other persona. Responds to Killua’s request to heal Gon; Killua alone has the stated privilege of issuing price-free orders 193 197.
• Wing — Nen instructor. Initially misleads Killua about Zushi’s power, then awakens his Aura Nodes and teaches him the fundamentals 75 77 78 86.
• Canary — Family butler who remembers Killua’s wish to make a friend; that memory helps weaken her resolve to keep Gon away 66.
• Gotoh and Zebro — Household staff who show affection for him. Gotoh is pleased that he has made good friends, while Zebro gives him an emotional farewell 70.

Notable Quotes

“Your job is to become invisible. Hide your presence completely, then land that perfect strike at the critical moment.” 41

“I will never, ever betray Gon.” 69

“That guy isn’t fighting at all. He’s feeding.” 161

“Everything’s all right. You survived.” 197

Trivia

• Spends his Heavens Arena winnings on rare, discontinued chocolates and packs limited-edition chocolate for the trip to Yorknew 73 95.
• Frequently plays video games during downtime, including a match against Gon shortly before Knov returns in a traumatized state 85 174.
• Is openly unimpressed by Greed Island’s reward limit: after collecting one hundred designated cards, he complains that the players can take only three into the real world 149.