Karn

Biodata

Power Progression

Background / History

Arrival in the Marvel Universe

By the year 2000, Karn had lived in the Marvel Universe for three years. His deceased parents left him assets, medical books, and a stake in a private hospital. Using his knowledge of the future, he built an investment fortune and retained shares in Stark Industries while preparing for the setting’s dangers through firearms training 1 2.

His exceptional memory helped him rank first at Midtown High School. Nevertheless, he repeatedly took extended leave to prepare for interdimensional travel, eventually enrolling at Columbia University while attending few classes in person 2 4 39.

Establishing Trade with Konoha

After acquiring restricted weapons through Jimmy Black’s contact, Karn used the All-Wonders Trading System to locate the Naruto world. He entered the Land of Rain during the Second Shinobi World War and encountered Yahiko, Konan, and Nagato. Food became his bargaining tool: the children guided him to the Sannin in exchange for milk and chocolate 2 3 5 6.

Tsunade and Orochimaru brought him to Konoha’s camp, where his medicines and battlefield first-aid methods attracted attention. He helped treat wounded soldiers but insisted that he was a merchant rather than a doctor 8 9.

His first major agreement with Konoha was worth approximately one hundred million ryo, payable in cash, gold, and village property. He rejected a demanded forty-percent discount, accepted restrictions on large-volume medicine sales, and secured permission to open pharmacy and food shops 11.

On returning home, he discovered that only two days had passed in the Marvel Universe. With Connor’s assistance, he began establishing trading and biotechnology companies to support—and conceal—his cross-world operations 13.

Commercial Expansion and Recruitment

Karn broadened his Shinobi World operations beyond medicine. He negotiated publishing royalties, built a confectionery factory in Kawaki Town, arranged cocoa cultivation, and introduced imported production machinery and gambling equipment 19 22 27.

He hired Kakuzu as a casino enforcer for three million ryo per month. Seeking capable future subordinates, he also searched Konoha’s orphanages for Yakushi Nonō before Danzō could recruit her. He sponsored her return to the Ninja Academy alongside two other children and encouraged her to learn Medical Ninjutsu at his pharmacy 27 29 31.

Karn initially intended to remain visibly an ordinary civilian so Konoha would have less reason to suspect him. He therefore sought chakra instruction privately, first from Xia Chuan and then from Kakuzu 31 34 35.

His recruitment program later expanded into war-orphan shelters in the Land of Fire and smaller countries. These institutions combined relief and reputation-building with the preparation of future subordinates, including recruits for modern firearm units 73.

Extremis and Hashirama-Cell Research

Karn selected the Extremis virus as a biotechnology project because he hoped it could complement Hashirama cells and overcome his weak physique. He funded Maya and Killian’s work, built a research center, and studied the project’s mechanisms under them 21 35 36 39.

When the research stalled, Killian pressed for human trials while Maya objected to a failure rate approaching ninety percent. Karn chose to seek IRB review and allowed Maya three months to pursue a breakthrough. He then brought serum, research data, and terminal-illness samples to the Shinobi World, hoping to enlist Tsunade through the prospect of restoring Nawaki’s health 39.

Tsunade agreed to collaborate on experiments combining Extremis with Hashirama cells. Karn supplied equipment and death-row prisoners, while Tsunade arranged access to Hashirama cells and Orochimaru joined the research 44 48 50.

The research ultimately enabled Karn’s own transformation. Following serum injection, he could break his metal restraints and perceived substantial improvements in strength, speed, and physical awareness. By his return to the Marvel Universe, he regarded himself as superhuman and possessed vastly improved stamina and chakra reserves 55 58 60.

Rather than treating the resulting body as a finished product, he came to view the New Extremis Virus as an evolutionary mechanism that continually repaired and optimized him. He increasingly studied biology himself, unwilling to entrust every aspect of his body to subordinate researchers 80.

Attack and Withdrawal from Konoha

Hiruzen and Danzō prepared a scheme involving Kushina and Karn, including surveillance and border restrictions. When a Cloud Ninja spy approached Karn’s closed shop, Karn shot him, defeated his attempt to escape through substitution, and hid with Kushina while grenade explosions summoned Konoha’s forces 44 45.

This was Karn’s first killing, but he reported little change in his state of mind. He left Konoha that night and later told Tsunade that he no longer felt safe there 47 48.

Karn moved the research laboratory outside the village and reduced his visits. He planned to use the Land of Waves as a commercial springboard into the Land of Water, while considering the Land of Tea as a future base for a modern armed force 48 49.

At this stage of experimentation, Extremis was suppressing Hashirama cells and improving healing, but subjects still exploded under emotional stress. One subject’s arm began regenerating after an explosion—a promising research result, not a power Karn had personally acquired at that point 50.

Entry into the Wizarding World

After the Trading System became able to search for another world, Karn prepared a new expedition with firearms, gold, supplies, and technical documents. He hired Betty Ross and Laura Jones as assistants, increased his gold holdings to three metric tons, and arrived in London. To locate a connection to the magical community, he commissioned Hasben’s private security company to find people named Granger and the Dursley family 59 60.

Karn initially lacked the bloodline-derived magical power needed to become a wizard. He studied the problem, acquired materials through Borgin and Burkes, and used expendable shadow clones to reduce his exposure to dangerous dark wizards. Once he secured a legal local identity, clones could also conduct ordinary investments and business on his behalf 64 69 70.

Back in the Marvel Universe, Les’s team prepared a fusion serum involving magical-creature research. The injection gave Karn access to immense magic associated with phoenix and fire-dragon genes. His first experiments succeeded in levitating a vase but also led him to breathe fire and accidentally burn much of his villa’s interior 86 87 88.

He subsequently became Hogwarts’ Defence Against Dark Magic professor. He used shadow clones to accelerate his reading, investigated the Room of Requirement and its Vanishing Cabinet, and pursued magical objects, ancient runes, and alchemy alongside his teaching 106 142 148.

During the Triwizard Tournament, Karn advised Harry Potter after hearing about his recurring nightmares involving Voldemort and recommended Occlumency. Over approximately two years, his clones helped him read nearly all of Hogwarts’ Restricted Section, particularly its dark-magic works 142 146.

Magical Genetics and Umbrella

Karn continued integrating magical-creature traits into his body. He extracted unicorn genes without killing the creature, checked the material for curses, ran simulations, and injected the resulting serum. The treatment strengthened his vitality and gave his magic a powerful cursing property 145.

His research with Scamander connected ancient runes to magical-creature bloodlines. Karn developed the idea of constructing runes within his own body and eventually completed a Source of Magic, establishing a foundation for his increasingly self-sufficient spellcasting 144 148 153.

In the Resident Evil world, Karn sought artificial intelligence to complete the Pent Group’s technological capabilities. His acquisitions included Red Queen, over ten thousand technologies, T-virus research, enormous stores of gold and aerospace materials, and rare metals. He also injected the T-virus, further strengthening himself and awakening telekinesis 153 156.

Under his ownership, Umbrella’s researchers received considerable autonomy. Dr. Ashford developed an airborne T-virus antidote that could eliminate the virus worldwide if distributed at thirty-two locations 156.

Conflict and Rule in the Shinobi World

Karn’s relationship with Konoha deteriorated from distrust into open hostility. During one confrontation, the wounded Third Raikage broke through his Impediment Jinx and Transfiguration walls, then struck his Shield Charm hard enough to send him flying. Danzō withdrew after acknowledging that their plan had failed 130.

Karn cultivated influence outside the village through the Land of Fire’s Daimyo. He demonstrated a protective necklace against Hatake Sakumo’s attacks, gave it to the Daimyo, and offered half the profits from Viagra. The Daimyo then pledged full support for the war against Kumogakure 158.

He also gained knowledge from travelers from the Shinobi World’s future. After examining Naruto Uzumaki’s mission watch and studying the Dragon Vein’s runes for ten days, Karn returned Naruto and Kakashi to their own time without accepting information about future events. Red Queen discovered extensive future technology in the watch, including space-fleet designs, powered armor, improved viruses, and cyborg soldiers 165.

By a later political meeting, Hiruzen regarded Karn as a mortal enemy and a major threat to Konoha, while Minato Namikaze also displayed hostility toward him 177.

Following a subsequent attack, Karn told Orochimaru that Biochemical Mechanical Warriors had killed most of Minato’s group. Orochimaru reported that Minato, Shikaku Nara, and Hiruzen had died. Karn chose to destroy the Underground Bounty Station rather than pay Danzō’s bounty and retained Obito and Nagato as potentially useful instruments for future conflict 236.

As his rule consolidated, Karn imposed agricultural, industrial, and tax reforms that weakened the Land of Fire’s nobles, backed by military power. He remained in the Shinobi World for more than a year while these reforms stabilized and Tsunade’s pregnancy advanced 236 237.

Pirate-World Commerce and Warfare

In the pirate world, Karn developed the Karn Chamber of Commerce into a major arms supplier. He became known for supplying the Marines, trading with more than a dozen countries, and opposing pirates in the East Blue and South Blue 262.

He overwhelmed Doflamingo through magnetic-field manipulation, lightning, and a Railgun shot that shattered Doflamingo’s arms. Gion’s arrival interrupted the confrontation, and Karn decided to preserve Doflamingo as a bargaining asset rather than kill him 205.

At Marineford, Karn recovered Kaido from the seabed, restrained him with Seastone chains, and stored him in the Pet Bag to obtain blood and lineage-factor material. After Whitebeard’s death, he also collected the corpse and refused Shanks’s request to surrender it without payment, demanding fifty Devil Fruits. He then attacked Jack the Drought’s ship with Raigo 264.

Nico Robin later exercised broad discretion over cooperation with the Revolutionary Army, although Karn excluded her Biochemical Mechanical Warriors from that unrestricted authority 371.

Expansion of the Pent Group and Magical Godhood

The Pent Group grew beyond pharmaceuticals into arms, military security, energy, manufacturing, computers, and space technology. Karn remained comparatively private despite his immense influence, close presidential connections, and ownership of businesses considered global leaders in their fields 307 323.

He exploited future knowledge and political connections alongside technological advantages. After Tony Stark’s return from captivity and public anti-war statements, Karn instructed Carl to short Stark Industries. His dealings with Councilman Malick also brought him into contact with Hydra’s political network, and the Pent Group later took the largest share of the spoils after Hydra’s downfall 185 186 208 307.

Using Calchas’s mysticism, Karn perceived the structure of Earth’s magical defenses and the natural energies of lightning and fire. He began restructuring his energy absorption and considering a path toward rule-based godhood. His later exchange with the Ancient One provided books and insights relevant to establishing his own magical civilization 246 275.

He developed lightning and fire magic that followers could learn, with their use and devotion feeding power back to him. He also considered the Kamui Dimension as a place to store magical power and accommodate souls 285 294.

Space Stone, Parallel Worlds, and Cosmic Expansion

After acquiring the Tesseract, Karn designated the Space Stone as the Hive laboratory’s most closely guarded secret. He broke its outer casing and used an extensive magical array to channel its energy into the Kamui Dimension, expanding and stabilizing his personal space 301.

His study of the Darkhold introduced Soul Tentacles and Dreamwalking. Through Dreamwalking, he occupied a parallel Kane Penter whose parents were alive and wealthy. The different souls prevented him from freely reading that counterpart’s memories, and dark magic visibly blackened the borrowed body’s fingers, demonstrating that his usual resistance could not simply be assumed in another body 303 304 306.

In the Swallowed Star universe, Karn traded serums, reactors, and weapons with Earth’s major powers and the HR Alliance. Red Queen and exploration robots helped him recover cosmic coordinates, an X81-model spaceship, and a frigate from Ruins No. 12 309 311 313.

He then pursued Genetic Warrior cultivation and purchased comprehensive combat methods. An early defeat in the Virtual Universe’s Slaughter Space exposed the gap between his physical power and practical skill. Months of highly realistic simulated combat improved both his fighting ability and his demeanor 315 317.

On returning, Karn counted the Insect Queen among his greatest acquisitions and planned further enhancements for Umbrella’s soldiers using Genetic Evolution Serum and cultivation techniques 319.

Karn subsequently allied with Loki in Asgard, persuading him to abandon his fixation on the Nine Realms in favor of conquest across the wider universe. He displayed Irina, the Zerg, and his advanced weapons within Kamui to substantiate the proposal. The two agreed to seek the Mind Stone and expand their influence together 321.

With Asgard’s permission, Karn commissioned Eitri to forge the Infinity Wand. The weapon housed the Space Stone, could be recalled to its owner, and allowed Karn to channel the stone’s power without burden 324.

Holy Grail World and Ability Bestowal

A later Trading System journey unexpectedly transferred Karn’s consciousness rather than his original body. He arrived in a Servant body in the Holy Grail world, killed Shinji Matou, and began investigating magecraft, Magic Circuits, and the Holy Grail system 326 327.

Despite reduced access to his original body’s power, he retained lightning and flame elementalization and substantial magical and alchemical skill. He used local materials to produce alchemical items and later repaired buildings and erased memories after a confrontation with Tsunade 326 334 340.

Karn negotiated with Illyasviel, offering to remove the Holy Grail from her and preserve her life. By the war’s end, she had become fully human, while Sakura Matou remained satisfied with her circumstances and Rin Tohsaka sought to witness the Grail’s ultimate purpose 343 350.

When Clock Tower representatives persisted in opposing him, Karn destroyed the Magic Circuits of all twenty-five members in Fuyuki. He and Rin gathered Japan’s underground ley lines to strengthen the Greater Holy Grail. Using his Servant body as a Lesser Holy Grail and Sakura as an anchor, he opened a passage to the Root, bound the world’s coordinates, and returned to his original body at Karn Manor 350.

Karn subsequently used the Holy Grail as a converter for granting abilities. He completed a linked Holy Grail Projection near London and gave Hermione and Pheobe access through contracts, explaining that absorbing cosmic energy would preserve their youth 352 354.

He also expanded his study of the Darkhold using Zero-Tails’ dark curse energy and delegated cosmic trade expansion to Lorelei. Later, the Ancient One entrusted him with the Time Stone without demanding promises; Karn nevertheless intended to defend Earth against the Dark Dimension 356 374.

Douqi Continent and Chakra Fruit Evolution

Karn entered the Douqi Continent with Hermione and Tsunade to establish another commercial outpost. At the Miteer Auction House, he bought all six hundred items in the first-floor hall for twenty-five million gold coins and proceeded to its heaven-tier auction 375.

He developed the Power Detector from cultivation methods, combat records, and life-sign data. Although Red Queen provisionally compared his energy to that of a one-star Dou Sheng, Karn recognized that the available dataset did not yet include direct Dou Zun or Dou Sheng measurements 382 383.

After obtaining and studying Ōtsutsuki Isshiki’s legacy, Karn continued experimenting with the God Tree. A tree cultivated using his own genes produced a Chakra Fruit especially suited to his evolution. Consuming it caused an enormous increase in power and required renewed training to prevent his diminished fine control from endangering weaker beings 384 396.

The Karn Chamber of Commerce expanded across the Northwestern Continent, recruiting specialists to construct spatial wormholes and planning an internal Floo Network. Karn also subdued the Fallen Heart Flame and extracted Yao Tianhuo’s hidden space from beneath the magma 394 398.

At the Ancient Bodhi Tree, Karn killed a nine-star Dou Zun who challenged him and forced competing factions away. He negotiated an alliance with the Gu Clan while Tsunade obtained the Bodhi Heart, then returned to Tianbei City to receive Gu Xun’er as the clan’s representative 407.

Dragon Ball Research and Departure for the Great Thousand World

In a Dragon Ball timeline devastated by the androids, Karn defeated Android 17 and Android 18 and froze them for study. He supported Bulma’s Time Machine research, helped Son Gohan settle in West City, and obtained a Senzu Bean vine, Water of Life, and Ultra Divine Water from Master Korin in exchange for delicacies 408 409.

After examining Dr. Gero’s Cell research, Karn instructed Red Queen to develop the Super Cell Project, intending to create two Cells and use one as an avatar. Bulma also gave him Spatial Capsule Technology and other Capsule Corporation technologies 409 410.

Porunga later took five hundred years of Karn’s lifespan in exchange for an extraordinary collection of abilities. The resulting surge of ki reached the Sacred World of the Kai, although Karn acknowledged that possessing abilities did not immediately grant mastery of their use 414.

After restoring Earth in the android-ravaged timeline, Karn tracked Majin Buu’s missing egg in another timeline. He offered Shin assistance against Babidi and Dabura in exchange for Potara Earrings; Shin accepted and additionally offered training toward becoming a Supreme Kai 426.

By the final preparations on the Douqi Continent, Karn had fused Majin Buu’s cells and reached World Lord–level strength. He opened five spatial passages to supply Source Qi, enabling his allies to pursue further breakthroughs. Little Fairy Doctor agreed to bear his child in exchange for her Woeful Poison Pill and freedom, on condition that she could take the child with her; she subsequently went into labor 449 450.

At the latest documented appearance, Karn’s powers had converged into a life-energy-based evolutionary path. With Hermione reporting that three Spatial Airships were ready, he departed for the Great Thousand World 452.

Appearance

• Blond hair: Yahiko describes him as a strange blond man during their first encounter 5.
• Young appearance: The gun-shop owner initially assumes he is a youngster with little money 2.
• Adult by his chakra training: The narration explicitly identifies him as an adult when comparing his chakra reserves with those of an Academy student 35.
• Serum-induced changes: During magical-creature fusion, his eyes turn red and the vessels beneath his skin glow fiery red as Extremis repairs his body. Dead skin peels away during the transformation 87.
• Enhanced attractiveness: Betty notices changes in his skin, looks, and bearing after the fusion treatment. His unicorn genes later contribute an aura that increases his appeal to women 88 384.
• Altered blood: Following unicorn integration, his blood contains a faint golden shimmer 145.
• Mangekyō pattern: When activating his enhanced Kamui, his eyes display a shuriken-shaped Mangekyō pattern 301.
• Sharper bearing: Months of realistic Slaughter Arena combat replace some of his formerly approachable appearance with a more dangerous, sharpened demeanor 317.
• Energy clothing: After his personalized Chakra Fruit evolution, his energy manifests as clothing that also provides substantial defense 396.

Personality

Karn is intensely cautious about survival and information security. He keeps his distance from unfamiliar ninja, uses reconnaissance before resting, and is willing to abandon a trading world rather than accept excessive danger. His fear that the Ancient One might uncover his interdimensional secret pushes him to seek power quickly 5 6 27.

He is ambitious but practical about his limitations. Wealth is a means to acquire influence, research, and supernatural strength rather than an end in itself. He considers himself an employer and organizer, not a fighter who should charge into battle, and prioritizes concealment, escape techniques, and biological enhancement 4 21 50.

His generosity often overlaps with recruitment and business interests. He sponsors orphans and rewards useful employees, yet also imposes steep prices, refuses credit, and uses others’ emotional attachments to secure cooperation. His willingness to provide prisoners for dangerous experiments contrasts with his careful concern for his own safety 14 17 25 29 34 39 44.

As his power grows, his ambitions expand from personal security to controlling industries, ruling territory, and building a magical and technological civilization. He prefers quietly consolidating influence over publicly exposing every capability, recognizing that unrestricted magical coercion could unite political and economic elites against him 113 135 186 307.

He is self-aware about his shortcomings but sometimes reluctant to address them. He identifies observation and combat instincts as weaknesses, initially prefers easy routes to power over exhausting training, and later recognizes that repeated success has made him complacent. His defeats in Slaughter Space prompt sustained practice and improve his response to injury and pressure 60 311 315 317.

Karn also becomes increasingly hedonistic, enjoying food, comfort, and numerous intimate relationships. He attributes some of his growing desires to fire-dragon and unicorn genes rather than accepting that they reflect his own character 86 156 207.

His later conduct is frequently instrumental and coercive. He preserves enemies when their bodies, abilities, or political usefulness promise greater returns than killing them, and is willing to manipulate relationships or impose conditions on freedom to achieve his objectives 205 236 264 294 450.

Abilities & Skills

All-Wonders Trading System

• World discovery: Scans potential trading worlds through an interface visible only to Karn 2 3.
• Trade requirement: A native’s agreement to trade allows the system to place a transaction marker, enabling repeat travel 2.
• Initial deadline: His first Naruto-world visit gives him forty-eight hours to establish a trade 5.
• Time-flow difference: Newly established destinations initially operate at a five-to-one time ratio in either direction; more frequent and extensive trade gradually normalizes the difference 13 14.
• Emergency escape: Karn regards cross-world travel as his ultimate fallback and describes it as unrestricted by barrier ninjutsu or sealing techniques 50.
• Coordinate preservation: Initially favors durable trading partners to avoid losing access to a world. Later considers freezing a partner after completing a trade to preserve the coordinate 153.
• Consciousness transport: Can transport his consciousness rather than his physical body, as occurs unexpectedly on entry into the Holy Grail world. Karn must establish a route back and bind that world’s coordinates before returning to his original body 326 350 351.
• Limit: He cannot alter the system’s rules and has not worked out its world-searching pattern. Later developments demonstrate that he cannot assume every journey will function identically 13 36 326 351.

Spatial Backpack

• Capacity: Fifty inventory slots, each restricted to one item type. A unit represents one hundred kilograms, and each slot holds up to 999 units—4,995 metric tons in total when fully used for goods such as flour 2.
• Instant retrieval: Can produce loaded firearms immediately, allowing rapid weapon changes without reloading 3 45.
• Logistics: Carries medicine, food, machinery, weapons, research materials, and other supplies between worlds 21 39 50.
• Concealment: Initially retrieves samples under cover of an ordinary backpack to disguise the storage ability 7.
• Industrial-scale transport: Later acquisitions include ten slots of gold and ten slots of gold-titanium aerospace materials, alongside other rare resources 156.

Chakra and Ninjutsu

• Three Basic Techniques: Learns the techniques from Kakuzu; the Transformation Technique becomes his main tool for concealing his identity 35.
• Shadow Clone Technique: Supports concealment and personal security, although his initial chakra reserves permit only one short-lived clone 35 36.
• Earth Release: Hiding Like a Mole Technique: Enables rapid underground escape 50.
• Physical enhancement: Chakra makes wielding two submachine guns simultaneously manageable 45.
• Early limits: Weak reserves, a poor physique, and slow hand seals initially restrict his combat potential despite possessing five elemental affinities. Serum enhancement later removes the original reserve and physique limitations, but does not automatically supply combat experience 35 50 60.
• Clone-based productivity: Uses multiple clones for company administration, research, teaching, and simultaneous study. Extremis helps process their returned memories, and Hashirama cells support longer deployment 70 73 106 146 148.
• Wood Release Clones: Combines Wood Clones with Soul Tentacles to create six transformed agents estimated to persist for nearly a year at minimum 303.
• Chakra Cursed Seals: Places seals on Umbrella executives and military personnel to ensure loyalty 114.
• Ryūchi Cave contract: Is a contracted partner of Ryūchi Cave and can summon or work with its snakes, including Aoda 86 158.
• Tailed-beast assimilation: Contains and digests tailed beasts within a Sealing Space. Assimilating the Four-Tails grants Lava Release, and his later power sources include Ten-Tails chakra 286 324.
• Chakra bestowal: Can grant chakra to others, though he considers it difficult to reclaim once given 352.

Marksmanship and Combat Preparation

• Firearms training: Practices against moving targets and earns praise from instructor Jimmy 1.
• Close-range gunfighting: Kills the Cloud Ninja spy through rapid successive volleys, continuing after the opponent uses substitution 45.
• Explosives: Uses grenades to attract reinforcements and discourage possible accomplices 45.
• Conditioning: Trains in martial arts and physical fitness before his first journey 5.
• Initial combat limit: His first victory benefits from the spy’s lack of intelligence about him and unfamiliarity with modern firearms 47.
• Expendable combat proxies: Sends a shadow clone into Knockturn Alley carrying five Explosive Tags and five kilograms of explosives, allowing retaliation without exposing his original body 69.
• Hand-to-hand competence: Though inferior to specialist supernatural fighters in technique, he readily defeats ordinary assailants while Dreamwalking in a comparatively ordinary body 304.
• Force-application and movement training: Purchases comprehensive Genetic Warrior methods and repeatedly trains against coordinated opponents in the Virtual Universe 315 317.
• Experience gap: Initially loses to ten seventh-tier Stellar simulated opponents despite assessing his physical attributes as Cosmic level. Later defeats twenty ninth-stage Stellar opponents with Genetic Warrior methods alone and continues training for three additional months 315 317.

Medical Knowledge and Research

• Practical preparation: Studies bandaging, suturing, medication use, diagnosis, and surgical procedures; practices surgery on dummies before traveling 2.
• Field experience: Sutures wounds and applies medicine to injured Konoha soldiers 9.
• Research literacy: Develops an understanding of Extremis through a year of study with Maya and Killian 39.
• Medical planning: Advises Tsunade to introduce medical-system reform in affordable stages 29.
• Initial limitation: Initially regards himself as an investor and collaborator rather than a qualified researcher or doctor 9 21.
• Independent biological study: Later studies biology regularly to understand his own evolution and avoid complete dependence on his researchers 80.
• Genetic-serum preparation: Uses Les’s experimental records to reproduce a magical-creature gene-integration procedure, including extraction, simulations, and self-injection 145.
• Evolutionary engineering: Combines viral enhancement, magical-creature genes, cultivation, and Chakra Fruit research to raise his level of life 156 315 396 449.
• Super Cell Project: Directs Red Queen to continue Dr. Gero’s research, intending to produce two Cells and use one as an avatar; the initial project announcement is not evidence that this avatar has already been completed 409.

Commercial and Domestic Skills

• Investment: Directs stock-market activity and profits from gold and oil futures with Carl and Connor 3 14.
• Negotiation: Secures firm medicine-payment terms and a thirty-seven-percent publishing royalty 11 17 19.
• Cooking and baking: Produces elaborate custom cakes, including Kushina’s graduation gift 25 41.
• Language: Speaks Japanese, allowing communication and trade in the Shinobi World 4.
• Political bargaining: Uses protective magical equipment and profit-sharing to secure the Land of Fire Daimyo’s support 158.
• Economic administration: Implements agricultural, industrial, and tax reforms and builds interregional transport infrastructure for his commercial network 236 394.
• Strategic market exploitation: Orders aggressive short-selling of Stark Industries after Tony Stark’s public anti-war statements 208.

Enhanced Physiology and Genetic Integration

• Extremis repair and optimization: His enhanced virus continually repairs and optimizes his body and helps integrate additional genes and abilities 70 80.
• Superhuman strength and durability: Breaks metal restraints after his first transformation; later believes he can throw a car and can tear through steel plates seven or eight millimeters thick 55 87 88.
• Reduced sleep requirement: After enhancement, approximately three hours of sleep can sustain a full day of activity 80.
• Magical-creature traits: Phoenix and fire-dragon genes provide immense magic and affinity for fire; unicorn genes add vitality and strengthen the cursing nature of his magic 87 145 246.
• T-virus benefits: Improves physical fitness and brain development and awakens telekinesis 156.
• Higher-life physiology: Assimilated tailed-beast chakra enables survival in space. His altered biology makes reproduction with ordinary humans impossible by the stage described, while women with unusual constitutions retain varying chances 315.
• Genetic original energy: Further harmonizes his genes, serums, and other enhancements while strengthening his body 315.
• Majin Buu cells: Has integrated Majin Buu’s cells by the time he reaches World Lord–level strength; the available account does not separately enumerate every resulting trait 449.
• Unified life energy: Eventually converts chakra, magic, dou qi, and cosmic energy into pure life energy, emphasizing evolution of his existence rather than exclusive advancement within one system 452.
• S-Cells and Super Saiyan transformation: Can amplify his life energy through S-Cells and a Super Saiyan transformation 452.

Magic, Runes, and Alchemy

• Bloodline-derived magic: Gains immense magical reserves through magical-creature genetic fusion, overcoming his original inability to use wizard magic 64 87.
• Spell output and endurance: Can train intensively throughout the day and produces unusually destructive results even with ordinary spells such as Diffindo 88.
• Defensive magic: Uses the Shield Charm and other Protective Charms alongside electromagnetic defenses. A Shield Charm withstands the Third Raikage’s strike, though the impact still throws Karn backward 130 237.
• Movement and utility: Uses flight, Apparition, Transfiguration, memory modification, and magical cooking 113 114 313 340.
• Mind and curse magic: Knows the Imperius Curse, mind-control methods, and curses. His unicorn-derived magical property increases the strength of dark magic 113 145 303.
• Runic Source of Magic: Constructs an internal source after studying ancient runes and their relationship to magical-creature bloodlines 144 148 153.
• Alchemy: Produces protective necklaces, shrinking items, and other equipment; can adapt unfamiliar magical materials from the Holy Grail world into usable alchemical items 158 185 334.
• Lightning and fire schools: Develops magic that other practitioners can learn and connects their incantations, wands, and arrays to his power. Followers’ use of his magic and devotion strengthen his own foundation 285 294.
• Darkhold techniques: Learns Soul Tentacles and Dreamwalking and later uses Zero-Tails’ dark curse energy to cast nearly all of the book’s spells 303 356.
• Dreamwalking limitations: A counterpart’s separate soul prevents unrestricted memory access, and dark magic damages the borrowed body. His initial belief that self-powered casting could avoid corruption is therefore not a blanket immunity 303 304 306.
• Holy Grail construction and projection: Links Holy Grail systems across worlds and uses them to convert energy and bestow abilities 352 354.
• Bestowal limits: Can grant access to tenth-tier magic, but supporting more than a thousand such users would impair his own performance. Magical versatility still requires the recipient to undertake substantial study 363.

Devil Fruit and Elemental Abilities

• Rumble-Rumble Fruit: Grants lightning generation, lightning elementalization, and an exceptional affinity for electrical energy 246 262.
• Magnetic-field control: Manipulates attacks and surrounding material through electromagnetic effects, repeatedly disrupting Doflamingo’s techniques 205.
• Railgun: Uses an electromagnetic projectile attack powerful enough to shatter Doflamingo’s arms 205.
• Electromagnetic Barrier: Forms a major defensive layer beneath or alongside magical protection 237.
• Raigo: Uses a large-scale lightning attack to sink Jack the Drought’s ship 264.
• Munch-Munch Fruit: Eats materials and synthesizes alloys, producing numerous experimental metal combinations 313.
• Flame elementalization: Can become any flame he controls, including ordinary fire, Fiendfyre, and soul-burning Hellfire. This awakening is associated with his Genetic Warrior development and phoenix genes, rather than identified as another Devil Fruit 317.
• Environmental resistance: Can traverse magma using flame elementalization or Kamui intangibility 398.

Kamui, Infinity Stones, and Spatial Power

• Kamui intangibility: Transfers his body into another dimension before attacks connect. Loki’s scepter repeatedly passes through him without causing injury 321.
• Dimensional transport: Can bring others into Kamui and use it to house forces, resources, and advanced weapons 321.
• Original cross-world limitation: With only the initially accessible ocular arrangement, he cannot connect to the distant Shinobi World dimension from Marvel despite vast chakra and magic 237.
• Space Stone reinforcement: Uses cosmic energy to enlarge and stabilize Kamui. His claim that beings below World Lord level probably cannot detect it in the Swallowed Star universe is explicitly an estimate 301 308.
• Infinity Wand: Channels the Space Stone without bodily burden and enables travel throughout the universe 324.
• Time manipulation: Uses the Time Stone to accelerate energy release a hundredfold and recognizes its capacity to restore bodily youth 374.
• Universe-dependent artifacts: Notes that the Infinity Stones are of little use outside their native universe 374.

God Tree and Chakra Fruit

• Personalized cultivation: Grows a God Tree using his own genes so that its fruit particularly suits his evolutionary needs 396.
• Natural-energy dominion: After consuming the fruit, can perceive and destroy natural energy and manifest a defensive energy cloak 396.
• Spatial force: A light clench of his fist can crush a patch of space after the transformation 396.
• Controlled war-beast shell: The harvested tree’s remaining shell contains his will and can become a war beast thousands of meters in size when supplied with chakra 396.
• Control requirement: The sudden power increase reduces his fine bodily control, requiring retraining to avoid harming weaker beings through accidental releases 396.

Technological Expertise

• Artificial-intelligence coordination: Uses Red Queen to administer research, interpret records, explore ruins, control recovered spacecraft, and analyze his own development 165 301 313 315.
• Hacking: Receives technical knowledge from Red Queen through electromagnetic transmission and can operate independently without her during Dreamwalking 304.
• Energy technology: Develops a Space Stone–based reactor superior to the Arc Reactor and reproduces highly destructive energy weapons 309.
• Power Detector: Creates a device that analyzes life signatures, magnetic fields, techniques, attack directions, and weaknesses. It detects life within twenty kilometers and can communicate across two star systems 382.
• Storage and transport research: Acquires Spatial Capsule Technology, which can package entire buildings and complements his existing storage rings and spatial bags 410.

Equipment / Weapons / Items

• Firearms and ammunition — Pistols, rifles, submachine guns, a Thompson, an assault rifle, and rocket launchers obtained through private weapons purchases 3 45.
• Grenades — Used during the attack on his Konoha shop 45.
• Reconnaissance drone — Surveys unfamiliar surroundings, though its range is limited 5.
• Konoha entry and exit pass — Issued after his first major medicine agreement 11.
• Extremis serum and research data — Acquired through his ownership of the research project and carried to Tsunade 39.
• Safe room — A reinforced-use basement in his larger New York home, where he isolates himself before traveling between worlds 39.
• Explosive Tags and demolition explosives — Used to arm a disposable shadow clone for travel in Knockturn Alley 69.
• Pet Pouch / Pet Bag — A spatial container used for magical-creature research and to hold the restrained Kaido 145 264.
• Red Queen — Artificial intelligence acquired from the Resident Evil world and incorporated into his research, logistics, and strategic operations 156 165 313.
• Naruto’s mission watch — Contains future recordings and extensive advanced technological information 165.
• Kamui Dimension — Personal ocular space used for transport, refuge, storage, and military deployment, subsequently reinforced with the Space Stone 301 321.
• Space Stone — Initially acquired within the Tesseract and later housed in the Infinity Wand 301 324.
• Infinity Wand — Eitri-forged divine weapon with Space Stone integration, recall enchantment, and runic protection against unauthorized removal of the stone 324.
• Darkhold — Source of his studies in Soul Tentacles, Dreamwalking, and other dark magic 303 356.
• Holy Grail systems — Linked magical infrastructure used for energy conversion, contracts, and ability bestowal 352 354.
• Time Stone — Entrusted to him by the Ancient One 374.
• Power Detector / Power Scouter — His life-sign analysis and long-range communication device 382 383.
• Senzu Bean vine, Water of Life, and Ultra Divine Water — Obtained from Master Korin for cultivation and research 409.
• Spatial Capsule Technology — Given to him by Bulma together with other Capsule Corporation technologies 410.
• Potara Earrings — Received from Shin in exchange for agreeing to defeat Babidi and Dabura 426.
• Dragon-Phoenix Origin Fruit and eighth-grade pill beast — Among the treasures collected from Dou Sheng ruins 426.

Businesses & Assets

Relationships

• Carl Sheldon — Best friend and investment collaborator. Executes his market decisions and helps arrange suppliers and warehouse access; he repeatedly postpones their gaming sessions before finally completing their saved game. She later warns him about financial threats, and he directs her to short Stark Industries after Tony Stark’s return 1 3 4 27 135 208.
• Connor — Carl’s father, financial adviser, and later business partner. Provides company-registration contacts and manages funds for Karn 13 21 39.
• Jimmy Black — Shooting instructor who connects him to a restricted-weapons supplier 1 2.
• Tsunade — Principal Konoha trade contact, friend, and medical-research collaborator. Consults him about reform and joins the Extremis–Hashirama project. Their later relationship is intimate, and Karn arranges Nonō’s assistance during her pregnancy. She accompanies him to the Douqi Continent and obtains the Bodhi Heart while he negotiates with the Gu Clan 8 28 29 44 236 237 375 407.
• Orochimaru — Research collaborator whose biological expertise Karn seeks to support with funding, equipment, and materials. Their cooperation later encompasses Super Soldier Serum information, Fire Dragon forces, war planning, and the aftermath of the conflict with Konoha 22 48 50 114 158 236.
• Kakuzu — Paid casino enforcer and ninjutsu teacher. Helps Karn extract chakra and teaches his foundational and escape techniques 27 35 50.
• Xia Chuan — Trusted business subordinate. Expands his factories and maritime operations and assists with his first chakra-training attempts 22 34 48.
• Kawaki Miwa — Konoha employee who handles shops, deliveries, orphanage inquiries, and communications 22 29 31.
• Nanami — Reports on Karn’s Konoha businesses and sponsorships, relays messages, and informs him about the economic effects of rising war tensions 41 114.
• Kushina Uzumaki — Frequent customer and familiar visitor whom he teases over prices. Gives her a graduation cake and protects her during the Cloud Ninja attack. She remains a regular visitor during his absences; later, she asks him to intervene for Mikoto, but he refuses and instead encourages her to support Mikoto through Sasuke 25 37 41 45 114 294.
• Yakushi Nonō — Sponsored orphan and prospective recruit. Karn funds her schooling and intends to arrange training under Tsunade to keep her away from Danzō. She later provides intelligence on Konoha’s war situation and is entrusted with helping Tsunade through childbirth 29 31 44 114 236.
• Maya and Killian — Extremis researchers whose facilities and work he finances; he also learns the project’s scientific principles from them. Killian’s persistent hatred of Tony Stark later makes Karn wary of retaining him, although he values the talented researchers around him 35 36 39 86.
• Hiruzen Sarutobi and Danzō — Village leaders with whom his commercial relationship becomes increasingly distrustful. Their interest in his medicines and involvement in a scheme around Kushina contribute to his withdrawal from Konoha. They later become open enemies; after Hiruzen’s reported death, Karn discusses Danzō’s bounty and surviving hostile ninja with Orochimaru 11 44 48 130 177 236.
• Betty Ross — Hired as an assistant and later retained as liaison to General Ross’s research cooperation. Becomes Karn’s lover and his only publicly known romantic partner at one stage. Accompanies him into space and is among those he empowers 60 86 88 114 323 324 363.
• Laura Jones — Assistant entrusted with major business responsibilities. Her workload becomes particularly heavy during the Pent Group’s expansion after Hydra’s downfall 60 307.
• General Ross — Betty’s father and a military research contact. Investigates Karn’s background and maintains cooperation involving the Extremis project and military personnel 88 114 135.
• Les — Researcher responsible for preparing and administering Karn’s magical-creature fusion serum. Karn rewards him with a million-dollar check and orders the remaining experimental records deleted after receiving his own backup 86 87.
• Hermione Granger — Goddaughter, magical associate, and later expedition companion. Supports his dealings in the Wizarding World, receives Holy Grail access, travels with him to the Douqi Continent, and oversees preparations for the Great Thousand World expedition 106 142 354 375 452.
• Pheobe — Wizarding World associate whose Love Potion fails to affect Karn. Later signs a contract granting access to his linked Holy Grail system 148 354.
• Harry Potter — Student who approaches Karn about his forced Triwizard participation and recurring nightmares. Karn recommends Occlumency 142.
• Scamander — Magical researcher whose conversations with Karn help develop his theories about magical-creature bloodlines, ancient runes, and the Source of Magic 144.
• Red Queen — Acquired artificial intelligence and central research and administrative assistant. Analyzes future technology, manages laboratories and exploration, records cultivation data, and leads the Super Cell Project 156 165 313 315 409.
• Dr. Ashford — Umbrella researcher who appreciates Karn’s support and research autonomy and develops a globally distributable T-virus antidote 156.
• Alice and Alicia — Karn acts as Alice’s godfather and periodically checks her development in the Resident Evil world. He separately plans to transfer Umbrella’s authority and forces there to Alicia 237 354.
• Aoda — Ryūchi Cave snake brought across worlds for research. Karn feeds and reassures him after dangerous transport, later creating shrinking alchemical items that reduce his size without reducing his strength 86 185.
• Ichikishimahime — Ryūchi Cave contracted partner strongly attracted to Karn’s enhanced blood. Later accompanies his wider activities and returns stronger from the Nine Netherworld Yellow Spring 158 450.
• Land of Fire Daimyo — Political patron whose cooperation Karn secures with a protective necklace and a share of Viagra profits 158.
• Hatake Sakumo — Demonstrates Karn’s protective necklace by attacking the Daimyo while it is worn and later stands beside the Daimyo at a political meeting involving Karn 158 177.
• Naruto Uzumaki and Kakashi Hatake — Future visitors whom Karn returns to their own time through the Dragon Vein. Naruto’s watch provides him with extensive technological information 165.
• Minato Namikaze — Initially observed near Kushina’s graduation celebration; later openly hostile to Karn. Orochimaru subsequently reports his death after the conflict involving Karn’s Biochemical Mechanical Warriors 41 177 236.
• Konan, Yahiko, and Nagato — His first guides in the Shinobi World. Konan later reports Yahiko’s death, while Karn preserves Nagato as a potentially useful participant in future conflict 5 6 236.
• Rin Nohara and Obito Uchiha — Karn repeatedly extracts Three-Tails chakra from Rin, who becomes more reliant on him and resentful of Obito. He later recruits her help against Obito and records her rejection for Red Queen to edit 236 294.
• Uchiha Mikoto — Later his wife. After Fugaku’s death, Karn refuses to intervene to spare Itachi; Mikoto subsequently appears caring for Karn after his laboratory work 294 384.
• Baby 5 — Intimate partner who addresses him as husband. Karn directs her to study weapon blueprints and operating principles and undertake physical training and serum enhancement 207.
• Nico Robin — Trusted associate granted broad discretion over cooperation with the Revolutionary Army, with restrictions concerning her Biochemical Mechanical Warriors 371.
• Doflamingo — Defeated enemy whom Karn preserves for potential trade benefits. Karn later suspects him of drawing Kaido’s attention to his arms business 205 262.
• Gion — Marine Headquarters Vice Admiral who intervenes to stop his fight with Doflamingo 205.
• Councilman Malick — Hydra-linked political contact who discusses Wakanda with Karn and later apologizes after recognizing him as a “friend” 185 186.
• Ancient One — Initially a feared potential investigator of his secret. Later becomes a magical exchange partner and entrusts him with the Time Stone, while Karn accepts responsibility for opposing the Dark Dimension 27 246 275 374.
• Hong and the HR Alliance — Trading counterparts in the Swallowed Star universe. Hong seeks knowledge about the wider cosmos, while the HR Alliance’s nine great families become major buyers of Karn’s technology and serums 311 313 317.
• Loki — Cosmic ally. Karn persuades him to pursue conquest beyond the Nine Realms, demonstrates his own forces, and agrees to cooperate in obtaining the Mind Stone 321.
• Eitri — Dwarf King commissioned to forge the Infinity Wand in exchange for payment and novel metals 324.
• Sakura Matou — Ally in the Holy Grail world who serves as Karn’s anchor during his passage to the Root 350.
• Rin Tohsaka — Begins as an enemy and becomes an ally. Helps gather ley-line power for the Greater Holy Grail and witnesses Karn’s return route 350.
• Illyasviel von Einzbern — Accepts Karn’s assistance in preserving her life and removing her role as a human Holy Grail. Becomes fully human and witnesses the passage to the Root 343 350.
• Lorelei — Subordinated associate entrusted with expanding trade into the universe and later granted additional powers 356 363.
• Sharon Carter — Defector who develops Karn’s Superhuman Personnel Bureau. He rewards her performance with powers modeled on Ikaris 363.
• Gu Xun’er and the Gu Clan — Commercial and political allies on the Douqi Continent. Xun’er represents the clan at the alliance signing and later participates in preparations involving Void Devouring Flame 407 450.
• Bulma — Research collaborator whom Karn supports in developing a Time Machine. Gives him Capsule Corporation technologies, including Spatial Capsule Technology 409 410 426.
• Son Gohan and Trunks — Accompany him to Korin Tower after he defeats the androids. Karn helps Gohan settle in West City and supports Bulma’s household 409.
• Master Korin — Trades cultivation materials, Water of Life, and Ultra Divine Water to Karn for delicacies 409.
• Shin and Kibito — Encounter Karn while investigating Majin Buu. Shin gives him Potara Earrings in exchange for help against Babidi and Dabura and offers Supreme Kai training 426.
• Little Fairy Doctor — Bears Karn’s child under an agreement exchanging childbirth for restoration of her Woeful Poison Pill and freedom, with permission to take the child. Goes into labor during his final preparations on the Douqi Continent 450.

Notable Quotes

“You've more or less verified the medicines' effectiveness by now, haven't you, Tsunade-san? Let me reiterate: I'm a merchant, not a doctor.” 9

“I suppose you could call me a god. I'm stronger than many gods. Loki, whom we met a few days ago, is the God of Conspiracy in Earth's mythology. If I had to classify myself, I should count as the God of Thunder and Fire.” 324

“Then let's go. To the Great Thousand World.” 452

---