Killua

Biodata

Feature	Details
Name	Killua (奇犽)
Gender	Male
Affiliation	Zoldyck Family; Hunter Exam candidate 116 182
Occupation / Role	Zoldyck assassin; fourth son of the Zoldyck Family 44 135
Status	Alive; left the Zoldyck estate to travel with Gon, Kurapika, and Leorio 189 190
First Appearance	Chapter 44, “Killua” 44

Background / History

Killua is the white-haired, blue-eyed fourth son of the Zoldyck Family. Raised within an assassin household, he is trained in the family’s lethal techniques and has broken multiple assassination records among its younger generation. His white hair also earns him noticeable favoritism within the family. 44 49 165

His relationship with Illumi is defined by control and fear. Illumi monitors Killua’s behavior, punishes his attempts to run away, and views friendships as a weakness that could compromise an assassin. Killua repeatedly resists this control, attempting to leave the estate and insisting that he does not want to return. 59 68 178 185

Killua is deeply concerned for Alluka; when told that Alluka may be in danger, he immediately panics and asks to see them. 44

Appearance

Killua is a small white-haired boy with bright blue eyes. His appearance can shift sharply from youthful and expressive to cold and threatening when he kills. 44 135

• White hair and blue or azure eyes 44 118
• Nails that can extend into sharp, cat-like claws 44 135
• A noticeably smaller build than many of his opponents, which often leads others to underestimate him 134 135
• His eyes can become lifeless and dangerous during combat 135

Personality

Killua is perceptive, guarded, and stubbornly independent. He sees through Coleman's lies and disguises more readily than most people, while also using Coleman's affection for him to gain freedom or information. 68 136 177

Despite his assassin upbringing, Killua forms strong attachments. He prioritizes Gon's safety over confronting a girl seeking revenge against him, worries about Gon's arrival at the Zoldyck estate, and helps Kurapika recover during the Hunter Exam. 126 178 186

His confidence in battle contrasts with the terror Illumi can provoke in him. Killua can be smug and frighteningly calm when killing, yet Illumi’s presence causes him to freeze, panic, and doubt whether he can resist. 135 178

Abilities & Skills

Zoldyck Family Secret Technique

Killua can control the muscles in his hand to perform the Zoldyck Family’s heart-extraction technique. 135

• Extends his nails into claws for close-range killing 135
• Removes an opponent’s heart in a single movement 135
• Crushed the extracted heart of a serial killer immediately afterward 135
• States that every Zoldyck Family member is trained in this technique 135

Assassin Combat Aptitude

Killua possesses exceptional combat ability despite his age and size.

• Defeated a captured serial killer in a single exchange during the Hunter Exam 135
• Has broken numerous assassination records among the Zoldyck Family’s younger generation 165
• Shows strong tactical awareness, quickly recognizing that a prisoner's proposed rules amounted to a death match 134
• Remains confident against physically larger opponents 130 134

Illumi's Nen-Needle Conditioning

Illumi implants Nen needles in Killua to frighten, test, and temporarily control him. 181 182

• Illumi’s killing intent and controlling aura can overwhelm Killua with fear 178
• A needle causes Killua to behave like a puppet during the Hunter Exam 181
• While under Illumi’s control, Killua kills an opponent and is disqualified for violating the exam rules 181 182

Equipment / Items

• Unlimited savings card — Given to Killua by Coleman through Wutong. It also functions as a legal pass to certain locations and allows him to seek aid at bars or taverns operating under Coleman’s name. 189

Relationships

• Coleman — His Second Brother. Killua is affectionate toward Coleman but also considers him a manipulative “fake gentleman” and later a “well-disguised piece of trash.” Coleman nevertheless protects Killua, helps him evade Illumi at times, and equips him with emergency resources before his departure. 44 136 178 189
• Illumi Zoldyck — His eldest brother and primary source of fear within the family. Illumi punishes Killua’s defiance, opposes his friendships, and uses Nen needles to control him. 59 178 181 185
• Gon Freecss — Killua’s close friend and travel companion. Killua prioritizes Gon's safety, worries about bringing him into the Zoldyck estate, and ultimately leaves home alongside him. 126 186 189
• Kurapika — A friend and fellow Hunter Exam participant. Killua gives him candy and directs him to a miracle medicine so that he can recover from Coleman's injuries. 178
• Alluka — Killua’s sibling. He is immediately distressed when he learns Alluka may be in danger and wants to see them. 44
• Silva Zoldyck — His father. Killua obtains Silva’s permission before leaving the estate with his friends. 178 189

Story Role / Major Arcs

Hunter Exam

Killua participates in the Hunter Exam alongside Gon, Kurapika, and Leorio. The group successfully retrieves a Grape Spider egg from a dangerous cliffside challenge. 116

During the Prison Tower stage, Killua accepts a fight against a serial killer and kills him in a single move using his family’s heart-extraction technique. His casual response to the killing shocks the other examinees and staff. 134 135

Killua later assists Kurapika by providing recovery medicine and candy, but is confronted by Illumi in the exam arena. Overwhelmed by Illumi’s aura, he forfeits rather than continue resisting. 178

Illumi subsequently uses a Nen needle to control Killua, leading him to kill an opponent and receive mandatory elimination from the exam. 181 182

Departure from the Zoldyck Estate

After being punished by Illumi for running away and making friends, Killua remains defiant about his right to have companions outside the family. 185

With Silva’s permission, Killua leaves the Zoldyck estate with Gon, Kurapika, and Leorio. He reluctantly accepts Coleman’s black card as an emergency safeguard and warns his friends to ignore his unusual relatives. 189 190

Trivia

• Coleman’s disguises repeatedly confuse Killua, though Killua often notices familiar habits or mannerisms that make him suspicious. 121 135 175
• As a younger child, Killua regarded Coleman’s killings as works of art; later, he becomes far more openly critical of Coleman's behavior. 44 136