Gemini

Biodata

Feature	Details
Name	Gemini Fox (杰米尼)
Alias(es)	Fox; Lyle (an early assumed name) 2 3
Species/Race	Human; wizard
Gender	Male
Affiliation	Hogwarts School of Witchcraft and Wizardry; Slytherin House; Fox Merchant Guild
Occupation/Role	Hogwarts student; arms dealer; inventor and business owner; owner of the Fox Merchant Guild 237 308
Status	Alive; immortal after consuming a Divine Tree Fruit 230
First Appearance	The Arms Dealer of Hogwarts, Chapter 1: “Gemini Fox” 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Elder Wand wielder	6	Obtains an Elder wood, phoenix-feather wand with power far beyond ordinary wands; it feels like an extension of his own hand. 6
Spider Serum enhancement	10	Gains superhuman strength, adhesion, webbing, agility, and the physical foundation to use Soru and Kami-e. His initial punches carry roughly four to five tons of force. 10
Mental defenses	14	Purchases Legilimency and Memory Weaving, enabling him to empty his mind and fabricate or conceal memories from intrusion. 14
Animagus transformation	61	Successfully becomes an unregistered red fox Animagus; later uses the form alongside chakra. 61 117
Fiendfyre control	66	Demonstrates control of Fiendfyre in a duel with Dumbledore, who trusts his self-control with the curse. 66
Byakugan	110	Awakens near-omnidirectional, long-range vision and later develops its pressure ability to intimidate and immobilize opponents. 110 123
Chakra and Ninjutsu integration	117	Learns to refine chakra, use Shadow Clones and Rasengan, and combine chakra with spells to create delayed curse-orbs and other hybrid techniques. 117
Obscurus–chakra fusion	171–172	His Obscurus clone merges with him, turning his chakra black and creating a Dark Magic-derived power too strong for wooden wands. He adopts a mithril shortsword as a wand. 171 172
Mangekyō eye techniques	184–185	Acquires Kotoamatsukami and Tsukuyomi, then manifests an Eternal Mangekyō Sharingan and a black Susanoo. 184 185
Divine Tree Fruit evolution	230	Consumes a Divine Tree Fruit, gaining immortality, a Rinnegan evolved from his Mangekyō Sharingan, and a Rinne Sharingan. 230 231
Rinnegan-derived evolution	231	Awakens Phasing, Kōkōshōtenrei, flight, Gray Bone Ash Killer, Amenominaka, and a transformed ten-tailed white fox Animagus form. 231

Background / History

Gemini grew up at Holy Cross Orphanage, where he developed an early talent for making money by selling goods to the other children. He treated entrepreneurship as both a practical necessity and a personal ideal, earning £5.10 from slingshot sales in a single day and planning to expand his trade beyond the orphanage. Sister Linda was one of the few adults who consistently showed concern for his future. 1

His life changed when he received a Hogwarts letter. Professor McGonagall confirmed that he was a wizard and introduced him to the magical world, while Gemini quickly recognized that magic and the Weapon Shop could become routes to independence, protection, and profit. 3 9

At Hogwarts, Gemini was sorted into Slytherin. His composure, exceptional physical ability, and refusal to be intimidated quickly earned him attention within the house, including from prefect Davis Pruitt and his dormmate Draco Malfoy. 25

He chose to live primarily in the Room of Requirement after conflicts with older students made the Slytherin dormitory unsafe. He eventually turned the room into a private residence and later excavated a secret passage from it to his home. 26 117

Appearance

Gemini is consistently described as unusually handsome, with black hair, blue eyes, and a fair, refined appearance. As a child, he was short and slender enough to be underestimated, despite possessing extraordinary physical strength. 11 14 225

• Black hair and blue eyes. 11
• Fair complexion and delicate, striking features. 14 225
• Usually maintains a polished, gentlemanly presentation, including formal black attire for special occasions. 225
• His original Animagus form is a red fox. 61
• After consuming the Divine Tree Fruit, his Animagus form becomes a snow-white fox with ten tails and a Rinne Sharingan marking on its forehead. 231
• His evolved Spider Serum physiology can manifest four white, bone-like spider legs tipped with lethal gray ash. 231

Personality

Gemini presents himself as gentle, polite, humorous, and well-mannered. He regularly treats teachers, allies, and even opponents with outward courtesy, and he values dignity as a basic standard of conduct. His manners impressed McGonagall from their first meeting and later became a central part of his public reputation. 3 47

Beneath that polish, Gemini is calculating, acquisitive, and highly pragmatic. He openly identifies himself as greedy, selfish, fond of comfort, and driven by pleasure, while viewing kindness and restraint as basic self-cultivation rather than exceptional virtues. 118 He is willing to manipulate people and events when it serves a larger plan, particularly when dealing with Voldemort’s Horcruxes, criminal organizations, or business rivals. 87 100

He nevertheless maintains personal principles. Gemini protects people he considers his own, rewards loyalty, helps friends without always demanding payment, and shows restraint when power could create unnecessary consequences. 51 97 158 His greatest weakness is his tendency to answer insult or disrespect with disproportionate retaliation. 77 224

Abilities & Skills

Wizarding Magic and Mental Defense

Gemini is an exceptionally fast learner of conventional magic. He rapidly mastered common Charms, defensive spells, and much of the Defence Against the Dark Arts curriculum through independent study. 16 28

• Performs Transfiguration accurately from his first lessons and uses it creatively in combat and recreation. 29 54
• Knows numerous defensive spells, including the Disarming Charm, Stunning Spell, and Rictusempra. 16 29
• Cannot initially cast a Patronus, which motivates his interest in Fiendfyre. 16 59
• Uses Legilimency to clear his mind and resist mental examination. 14
• Uses Memory Weaving to construct false memories, though doing so convincingly requires time and care. 14 16

Spider Serum Physiology

The Spider Serum gives Gemini his first major physical enhancement, making his body powerful enough to complement rather than rely solely on magic. 10

• Adheres to surfaces through controlled molecular attraction, primarily through his hands and feet. 10
• Produces webbing for movement, restraint, and stealthy travel through Hogwarts. 10 26
• Uses Soru for burst movement and Kami-e for evasive mobility. 10 44
• Possesses an unusually resilient immune system that can neutralize most poisons and makes Veritaserum ineffective after only seconds. 35
• His raw strength increases to roughly twelve tons by age thirteen, with projected explosive force above twenty tons. 148

Animagus Transformation and Fiendfyre

Gemini is an unregistered Animagus, initially transforming into a red fox. He refuses Ministry registration because he considers disclosure a safety risk. 61

• Retains access to chakra while transformed. 117
• Later evolves into a ten-tailed, snow-white fox form capable of using Rinnegan abilities. 231
• Learns and controls Fiendfyre under Dumbledore’s supervision. 61 66
• Uses Fiendfyre against Dementors to protect Hogwarts Express students. 136
• Dumbledore considers Gemini capable of handling the curse responsibly. 61

Chakra and Ninjutsu

Gemini develops chakra as a second energy system, then experiments with using magic to amplify and shape it. 117

• Creates Shadow Clones that retain his magical traits but cannot access the Weapon Shop. 117
• Uses Rasengan, including enlarged variants enhanced by magic. 117
• Employs Fire Release: Great Breakthrough and water-based techniques in duels. 119
• Produces substitution decoys and curse-filled chakra spheres that function like magical grenades. 117
• Uses chakra to reinforce his body, stand on water or unstable terrain, and enhance combat mobility. 117 119

Byakugan

Gemini purchases the Byakugan to counter the Basilisk’s lethal gaze, gaining a sensory ability that quickly becomes one of his principal tools. 110

• Sees throughout Hogwarts and detects activity across roughly a one-kilometer radius. 110
• Possesses extreme visual detail, including microscopic observation. 110
• Locates Sirius Black in his Animagus form outside Hogwarts. 142
• Emits a pressure aura capable of frightening or immobilizing powerful creatures, including the Hungarian Horntail. 123 220

Obscurus-Derived Dark Magic

When Gemini’s Obscurus clone merges into his body, his chakra becomes black and fuses with magic into a new energy source. 171

• Wooden wands cannot withstand the fused power; his Elder Wand is modified into a mithril, dagger-like focus. 171
• Conjures mithril shortswords that can function as wands. 172
• Can cast low-output spells tens of thousands of times due to immense reserves and rapid recovery. 172
• High-output spells can inflict effects that are difficult or impossible to reverse, requiring careful control. 172
• Successfully performs Impure World Reincarnation, though it requires a recently deceased target with lingering attachments and a living sacrifice. 172 176

Rinnegan and Rinne Sharingan

The Divine Tree Fruit elevates Gemini beyond conventional wizardry, granting immortality and evolving his Mangekyō Sharingan into a Rinnegan. 230 231

• Phasing — Passively negates Ninjutsu, Genjutsu, and Fuinjutsu attacks, but Gemini must become tangible to attack. 231
• Kōkōshōtenrei — Absorbs and amplifies chakra-based attacks; Gemini discovers it can also absorb magic and return it with greater force. 231
• Amenominaka — Transports Gemini and others between worlds or dimensions. 230 231
• Infinite Tsukuyomi — An awakened Rinne Sharingan technique. 231
• Gray Bone Ash Killer — Turns touched matter to ash; Gemini tests it cautiously because of its lethality. 231
• World creation — Uses Wood Style and his Proto-Sekai to create terrain, forests, lakes, buildings, and a self-sustaining ecosystem. 231 232 247

Equipment / Weapons / Items

• Elder Wand — Elder wood, phoenix feather, thirteen inches; initially Gemini’s principal wand and later modified to survive his fused power. 6 171
• Hermes — A goblin-forged mithril hand-and-a-half sword gifted by Dumbledore. It is spotless, absorbs external power, can gain properties from absorbed substances, bolsters courage, and conducts chakra efficiently. 150
• Mithril Shortsword — A conjured blade used as a wand after Gemini’s Obscurus–chakra fusion. 172
• Peachwood Sword — A soul-harming sword used to fully sever Nearly Headless Nick’s head from his body. 97
• Firebolt — A high-performance broom Gemini acquires before becoming Slytherin’s Seeker. 35
• Artemis’s Blessing — A one-use purification gem that removes curses, control effects, and surveillance; Gemini uses it to remove both his Blood Curse and the Ministry Trace. 79
• Resurrection Stone — Used to create and test thoughtforms, revealing its ability to materialize mental power and manipulate objects through thought. 163
• Muggle firearms and weapons designs — Gemini sells firearms and ammunition, develops protective devices, and establishes arms production in both magical and Muggle markets. 51 66 106

Enterprises

• Firebolt broom business — Gemini’s Firebolts become highly profitable and globally sought after, especially before the Quidditch World Cup. 97 158
• Armaments company — Forms a partnership with Red: Gemini provides technology while Red supplies funding and labor; Gemini retains 80% ownership. 71
• MK-48 production — His light machine gun enters production and receives orders from the United States military. 97
• Motorcycle industry — Develops a thriving Muggle-world motorcycle business and plans to expand its technology into China. 158
• Fox Merchant Guild — By his arrival in the Marine world, Gemini is publicly known as the guild’s owner and markets advanced weapons to the Marines. 308

Relationships

• Albus Dumbledore — Mentor, sparring partner, and one of the few adults Gemini trusts. Dumbledore teaches him Animagus transformation and Fiendfyre, gifts him Hermes, and ultimately acknowledges that Gemini has surpassed him in raw strength. 59 61 150 232
• Hermione Granger — Initially clashes with Gemini after mistaking him for “Lyle.” Their relationship develops into a close but argumentative friendship; Gemini saves her from Tom Riddle’s diary possession. 3 37 100
• Harry Potter — Classmate and combat student. Gemini teaches Harry defensive methods, assists him against threats, and frequently involves him in plans concerning Voldemort and Horcruxes. 51 99 130
• Ron Weasley — Classmate who joins Harry in seeking Gemini’s combat instruction. 51
• Draco Malfoy — Slytherin dormmate and early admirer of Gemini’s strength. Gemini later protects Draco and offers the Malfoy family an alternative to serving Voldemort. 25 123
• Severus Snape — Head of House and demanding mentor. Snape recognizes Gemini’s talent but is frustrated by his preference for physical combat and non-magical abilities. 26 117
• Adria — Loyal close companion who openly supports Gemini, assists with his experiments, and remains protective of his relationships. 61 136 231
• Shirley — Close companion and business aide. She supports Gemini’s projects, accompanies him across worlds, and witnesses many of his power evolutions. 117 230 231
• Charlotte — Trusted companion whose identity Gemini uses for business arrangements; she assists with his household and interworld ventures. 71 235
• Red — Muggle criminal leader and business partner who handles financing and labor for Gemini’s American arms enterprise. 71
• Newt Scamander — Collaborator in researching Gemini’s Obscurus-derived power and testing its magical consequences. 171 172
• Nearly Headless Nick — Friend whom Gemini helps join the Headless Hunt without accepting payment. 97

Story Role / Major Arcs

Early Hogwarts Years

Gemini enters Hogwarts already equipped with the Weapon Shop, an Elder Wand, and Spider Serum abilities. Sorted into Slytherin, he becomes known for his combat skill, establishes the Room of Requirement as his private base, and earns Slytherin’s Seeker position after effortlessly catching the Golden Snitch. 25 26 35

His reputation rises sharply after he defeats a Three-Headed Dog and two Trolls, earning Slytherin fifty points and the admiration of students who had previously feared or underestimated him. 44

Chamber of Secrets

Gemini interferes with the diary’s path, eventually confronting Tom Riddle after Hermione is possessed. He outmaneuvers Riddle, captures the diary fragment’s soul, and saves Hermione. 87 100

He later kills the Basilisk, rescues endangered students, and clears Hagrid’s name in the process. The event becomes one of the defining achievements of his early Hogwarts career. 115

Rise as a Combatant and Entrepreneur

Gemini expands from small-scale trading into broom manufacturing, weapons production, and Muggle-world industry. His Firebolt business becomes internationally successful, while his partnership with Red produces modern armaments for the American market. 71 97 158

At Hogwarts, he develops into a combatant capable of defeating Dumbledore in a non-wand duel through speed, chakra, sensory abilities, and physical power. 119

Horcruxes and Political Influence

Gemini becomes increasingly involved in Voldemort-related affairs, locating Horcruxes, manipulating their movement, and destroying at least three of them by the time of his discussion with Dumbledore. 95 158

As his influence grows, Lucius Malfoy recognizes that prominent wizards are already watching Gemini’s political position and treating his actions as significant. 131

Triwizard Tournament and Transcendence

In the first Triwizard task, Gemini defeats the Hungarian Horntail unarmed in fifty-nine seconds, using Byakugan pressure to immobilize it before ending the fight with one punch. 220

After consuming the Divine Tree Fruit, he gains immortality and abilities beyond conventional wizardry. Dumbledore declines a further duel, openly admitting that Gemini has become stronger than him. 230 232

Interworld Arms Dealer

Gemini expands into other worlds, using Amenominaka and the Proto-Sekai to establish new bases, distribute abilities and weapons, and build commercial influence. He later arrives at Marine Headquarters as the owner of the Fox Merchant Guild, offering advanced armaments to the Marines. 237 246 308

Notable Quotes

“I am an arms dealer.” 237

“Power itself is neither good nor bad, Gemini. But people are.” — Albus Dumbledore 59

“Greedy, lustful, indifferent, fond of enjoyment, and a bit selfish—that was the real him.” 118

Trivia

• Gemini considers making money his defining ideal. 1
• He can see Thestrals. 89
• He refuses to register as an Animagus because he considers official disclosure dangerous. 61
• Fudge considers recruiting him as an Auror or even Head of the Auror Office after graduation, though Gemini does not want the job. 149
• His public image shifts from an intimidating prodigy to a notorious womanizer after he sponsors the Holyhead Harpies with seven Firebolts. 159 160