Milluki

Biodata

Feature	Information
Name	Milluki Zoldyck (糜稽)
Alias(es)	“Chubby”; “Fatty”
Gender	Male
Affiliation	Zoldyck Family; temporary alliance with Bai Zhu and Ella during the Creation Society investigation
Occupation/Role	Engineer, surveillance specialist, remote mission coordinator
Status	Active
First Appearance	Chapter 1

Appearance

Milluki is a chubby young Zoldyck with a round face, bowl cut, and a preference for shut-in-style overalls. Despite his soft build, he is physically steady enough to catch Bai Zhu after a full collision. 1

• Round cheeks and substantial facial fat, which nearly obscures his phoenix-like eyes. 1 4
• Usually operates with a game controller, snacks, and a large array of mechanical devices. 5 13
• Keeps expensive anime and mecha collectibles in his customized vehicle. 5
• Maintains a temporary command center containing surveillance equipment and a life-sized anime body pillow. 35

Personality

Milluki is socially inexperienced, irritable, and intensely protective of his possessions. Having spent much of his time isolated on Kukuroo Mountain playing games, he initially has little idea how to handle Bai Zhu’s forced familiarity or provocations. He is proud of being a Zoldyck and reacts badly when outsiders pry into his family’s work. 1

His technical brilliance is paired with an otaku’s enthusiasm for elaborate machinery, visual spectacle, and destructive prototypes. He treats his inventions as premium products even when their instructions are incomplete, their safety margins are questionable, or they have a fifty-percent failure rate. 25 35 37

Beneath his insults, Milluki repeatedly demonstrates concern for Illumi, Ella, and Bai Zhu. He panics when Illumi signals danger, prepares medical support for Ella, treats Bai Zhu’s injuries, and entrusts Bai Zhu with costly weapons and battlefield support. 14 21 32 35

Abilities & Skills

Nen

Milluki can release a hostile Nen aura and alter his fingers into sharp claw-like weapons when threatened. His aura is potent enough to melt nearby snow and intimidate ordinary people, though Illumi can suppress it effortlessly. 1

• Extends and sharpens his nails into claws. 1
• Uses Nen-based restrictions in certain inventions, increasing their power at the cost of reliability. 37
• Is not portrayed as a frontline combatant; he generally avoids direct confrontation in favor of remote support. 4 15

Engineering and Surveillance

Milluki designs and operates advanced mechanical insects, spiders, vehicles, medical tools, and explosives. His devices provide live visual feeds, vital-sign monitoring, tracking, communication, and battlefield interference. 5 6 20

• Mechanical cockroaches and flies scout enclosed areas and transmit surveillance footage. 1 3 5
• Mechanical Spiders can detect heat signatures, relay audiovisual feeds, administer stabilizers, transmit coded messages, and monitor a subject’s temperature and heartbeat. 6 20 21 22
• His surveillance feeds can include a faint Gyo-like visual effect. 6
• Nen interference can disable or destabilize his machines; one spider is destroyed by a field around Pige Aaron’s farmhouse. 6
• His bee-type reconnaissance devices may malfunction or self-detonate when exposed to chaotic Nen fluctuations. 15

Remote Coordination

Milluki serves as the group’s tactical handler during the Creation Society operation. He monitors enemy positions, intercepts communications, maps underground routes, guides infiltrators through earpieces, and relays coded information between separated allies. 15 19 22

• Directed Bai Zhu’s infiltration routes, device placements, and escape path through Sankara Town. 15 36
• Interpreted Illumi’s concealed Morse-code warning from the underground facility. 14
• Used Mechanical Spiders to pass maps and coded messages to Illumi while the latter was undercover. 19 22
• Identified Holy Knight formations, Black Crystal targeting methods, and enemy movements through surveillance and intercepted communications. 36 38
• Coordinates layered ambushes using aerial and subterranean mechanical forces. 39 40

Explosive Warfare

Milluki’s most dangerous inventions are insect-shaped explosives designed to threaten Nen users and Black Crystal-equipped Holy Knights. Their destructive potential is immense, but their operation often endangers allies as well. 35 37

• Exploding Mosquitoes — small demolition scouts used to sabotage structures, including the choir platform during the church battle. 19 21
• Exploding Beetles / Black-Shelled Rhinoceros Beetles — compact anti-Nen explosives; a direct blast can kill a Nen user defending with Ken, while a near miss can cripple one. 35
  • Possess a fifty-percent chance of failing due to their Nen restriction. 37
  • Successful detonations can devastate a logging road, destroy Holy Knight armor, and create a massive mushroom cloud. 37
• Mechanical Bees — aerial swarm weapons capable of explosive assaults and electromagnetic interference. 39 47
• Mechanical Earthworms — buried traps equipped with explosives, grappling mechanisms, and armor-cutting tools that can collapse an enemy formation. 39 40
• Smoke-Blast Bugs and Interference Bugs — disruption tools used to obscure movement, create decoys, and interfere with enemy targeting. 37 48

Equipment / Weapons / Items

• Modified black sedan — a controller-operated vehicle with no conventional steering wheel, a giant windshield display, surveillance integration, high-speed drift capability, and anime/mecha collectibles throughout its interior. 5
• Spider Punk series — mechanical spiders used for scouting, surveillance, infiltration, communication, and medical support. 6 13
• Mechanical Fly No. 1 — a tracker secretly planted on Bai Zhu’s collar. 5
• Mechanical Bees and Earthworms — Milluki’s concealed private mechanical army, deployed against Holy Knights. 39 40
• Exploding Beetles — voice-activated anti-Nen weapons temporarily authorized for Bai Zhu’s use. 35
• Interference Bees — vehicle-defense devices that create an electromagnetic smokescreen. 47
• Medical case and stabilizers — used through Mechanical Spiders to track, sedate, and stabilize Ella. 20 21
• Life-sized anime body pillow — kept at his temporary command center and treated as a personal possession. 35

Relationships

• Illumi Zoldyck — Older brother and primary mission partner. Milluki follows Illumi’s instructions, supports his infiltration remotely, and becomes visibly panicked when Illumi encounters a top-tier Nen user. 2 14 22
• Bai Zhu — Initially hostile toward Bai Zhu’s teasing and intrusion, but becomes his remote handler, supplier, and battlefield partner. Their cooperation is defined by insults, mutual reliance, and growing respect. 15 35 39
• Ella — Protects and monitors her during the Creation Society operation, providing a tracker, medicine, instructions, and emergency support despite speaking harshly to her. 20 21 23
• Number Nineteen — Helps transport and protect her during the escape from the woman in white, while continuing to operate the modified vehicle under pursuit. 46 47
• Zoldyck Family — Takes pride in the family name and invokes Silva, Zeno, and Maha when judging the threat level Illumi faces. 1 14

Story Role / Major Arcs

Creation Society Investigation

Milluki first appears in Sankara Town while recovering a mechanical cockroach from a fountain near the Creation Society church. Bai Zhu recognizes him as a Zoldyck, provokes him into revealing his name, and discovers that he and Illumi are investigating the organization. Milluki responds to Bai Zhu’s probing with Nen and claws before Illumi stops him. 1

At the church, Milluki deploys metal insects to scout the congregation and later joins Bai Zhu and Illumi in observing the abnormal Nen possessed by children and unborn fetuses. He contributes surveillance technology while remaining wary of Bai Zhu’s unpredictable behavior. 3 4

Farmhouse and Underground Operation

Milluki tracks Pige Aaron and Ella to a farm using a device he secretly planted on Bai Zhu. He then transports the group in his customized sedan and supports Bai Zhu’s farmhouse infiltration with upgraded Mechanical Spiders. 5 6

Once Illumi impersonates Ella to enter the Creation Society facility, Milluki becomes the operation’s remote coordinator. He manages surveillance feeds, receives Illumi’s coded warnings, equips Bai Zhu with explosive scouts, and helps direct the surface sabotage intended to expose the underground ritual. 13 14 15

Defense of Ella

Milluki monitors Ella’s condition after she becomes bait for the Creation Society. He installs a Mechanical Spider in her collar to track her vital signs and threatens to sedate her if she attempts a reckless rescue. 20

As the Black Crystal reaction worsens, he uses a spider to administer stabilizers, deploy smoke and flash devices, and keep Ella alive while Bai Zhu delays the cultists. His harsh words contrast with his urgent efforts to protect her. 21 23

Holy Knight Hunt

After the Creation Society dispatches Holy Knights to find Bai Zhu, Milluki wakes the injured Bai Zhu with an electric spider and assigns him the role of bait. He provides six Exploding Beetles while warning that their use in town could endanger civilians. 35

During the forest pursuit, Milluki guides Bai Zhu through enemy formations, analyzes the Black Crystal weapons, and eventually triggers explosive traps that devastate the Holy Knights’ forces. He later unveils a larger hidden arsenal of Mechanical Bees and Earthworms, breaking the Black Crystal Formation surrounding Bai Zhu. 36 37 39 40

Rescue Attempt and Bankai Assault

Milluki supports the rescue of Number Nineteen and the escape from the woman in white, driving his modified car under sustained Black Crystal attacks. He deploys Interference Bees, decoys, and bridge explosives, but recognizes that the enemy’s tracking methods exceed ordinary Nen concealment. 46 47 48

Although he initially argues for retreat and contacting the Zoldyck family, Milluki ultimately drives Bai Zhu back toward the church to save Ella and Illumi. He carries Bai Zhu’s speaker, activates the requested music, and follows him into the church after Bai Zhu releases Minazuki. 48 49 50

Notable Quotes

“Come back alive, then we'll talk.” 36

“You're not a user. You're expendable material.” 15

“Precision delivery, low residual detectability, high close-range lethality. Aside from the probability issue, it's basically perfect.” 37

Trivia

• Milluki refers to Bai Zhu’s manipulation of the Creation Society’s hierarchy as “trade competition.” 15
• He believes hand seals and chanting are extremely cool, reacting with visible excitement to Bai Zhu’s Kidō. 11
• His Exploding Beetles are powerful because of a Nen restriction, but this leaves each one with a fifty-percent chance of becoming a dud. 37
• He claims that, with sufficient materials, time, and funding, he could theoretically fit a Miniature Rose into a beetle. 37
• Despite repeatedly denying admiration for Bai Zhu, he secretly replays footage of Sōkatsui and reacts enthusiastically to Bai Zhu’s more theatrical techniques. 18 25 33