Reg

Biodata

Feature	Information
Name	Reg
Alias(es)	Li Chonggao; Mont Blanc Reg; Thunder God; Thunder God Boy; King Reg
Species/Race	Human
Gender	Male
Affiliation	King of the Thunder Kingdom / Kingdom of Zh; associated with the Kingdom of Heaven; former sole Shichibukai; former P9 reserve member; formerly trained under Cipher Pol on Tower Forest Island
Occupation/Role	King; combatant; infiltrator; former Cipher Pol trainee; leader of the Thunder Kingdom's forces
Status	Alive
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Power Level 10	2	Passed the initial Hand Match assessment, meeting the requirement to attempt entry into the Ninth Tower.
P9 reserve member	10	Survived the wilderness trial alongside Jabra and Wotori; admitted as a probationary Ninth Tower member.
Observation Haki awakened	18	Gained short-range sensing and movement prediction, though emotional disturbance could disrupt it.
Doriki 400+	19	Passed all four instructors' evaluations above 400, qualifying for Six Powers instruction.
Paper Art and Shave mastered	21	Learned both techniques in one month under Colin; his Observation Haki accelerated Paper Art training.
Tempest Kick mastered	22	Developed compressed flying slashes capable of cutting through thick tree trunks after two months of practice.
Moon Walk mastered	22	Completed the technique after an 80-day cliff-jumping regimen, stabilizing himself after falling from 900 meters.
Four Six Powers mastered	22	Paper Art, Shave, Tempest Kick, and Moon Walk; became eligible to apply for official P9 assessment.
All Six Powers mastered	45	Learned Iron Body and Finger Pistol after training the Flexibility Technique.
Rumble-Rumble Fruit acquired	71	Obtained the Logia-type Rumble-Rumble Fruit, gaining lightning generation, elementalization, electrical movement, and the foundation for active-flow applications.
Intermediate active flow	81	Used the Scepter and Thunder Drums to stabilize his output and partially solidify or elementalize separate portions of his body.
Armament Haki awakened	154	Awakened Armament Haki while enduring a coordinated assault from Rusukaina's beasts.
Lightning body-tempering, first phase completed	210	Completed the initial phase of a body-tempering process based on bioelectricity, physical training, medicine, and Sulong-derived research.
Thunder God Island transformation	271	Repeated lightning exposure, nutrient treatment, and body-tempering substantially increased his physical strength and electrical-energy storage capacity.
Future sight awakened	325	His Observation Haki evolved to briefly perceive the future after years of combat and training; he could initially foresee less than a second.
Resonance-based pseudo-awakening	486	Developed resonance techniques that manipulate electrical energy and temporarily create weather and environmental effects resembling a Logia awakening.
Refined Thunder God Mode	564	Activated Thunder God Mode through a specific-frequency energy-circulation diagram, furthering his ability to elementalize objects and alter the battlefield.
Ability rampage	627	Learned to force his Devil Fruit into a rampage state, gaining broad enhancement to his body and lightning abilities at the cost of temporarily losing elementalization.

Background / History

Reg was originally Li Chonggao, a soldier from another world who died when his cruise ship struck a reef near the Bermuda Triangle. He awoke in the body of a five-year-old orphan abducted by slave traders and was brought to Tower Forest Island, Cipher Pol's training base. His previous-life memories, strengthened soul, reduced need for sleep, exceptional memory, and sharp senses gave him an unusual foundation for training 1.

Determined not to be controlled by the strong, Reg pursued entry into the Ninth Tower, where Cipher Pol's best trainees could learn the Six Powers. He survived the P9 wilderness entrance trial with Jabra and Wotori, becoming a reserve member; Colin subsequently became his dedicated mentor 3 10 11.

Over years of extreme training, Reg awakened Observation Haki, reached the Doriki threshold for Six Powers instruction, and mastered all six techniques. Colin later told him that the Bernie Pirates had been involved in the deaths of Reg's parents, reinforcing Reg's stated desire for revenge 18 19 20 21 22 23.

Reg and Jabra were assigned to eliminate the Paike Crew, slave traders operating in the Sabaody Archipelago. During the operation, Reg infiltrated their base as a slave, mapped its defenses with Observation Haki, and killed the guards and traffickers obstructing the mission. After Marcus was killed, Reg staged his own death to escape Cipher Pol control, leaving Jabra behind to preserve the deception 25 26 27 28 29 30.

As a fugitive, Reg received temporary shelter and assistance from Shakky and Rayleigh. He then trained on Amazon Lily under Elder Nyon, traveled through Water Seven, commissioned a specialized vessel from Tom, and successfully rode the Knock Up Stream to the White Sea in pursuit of Sky Island and the Rumble-Rumble Fruit 31 32 33 34 35 36 37 38 48.

After gaining the support of the Shandians and receiving Sky Island equipment, Reg reached Birka and consumed the Rumble-Rumble Fruit. He began developing its lightning generation, elemental movement, active-flow, and electromagnetic applications while rejecting reliance on external tools as a substitute for personal growth 57 59 71 77 81 86.

Upon returning to Water Seven, Reg clashed with the Donquixote Pirates, defeated several of Doflamingo's officers, and escaped with two Devil Fruits from Machvise. He reunited with Jabra, directed him toward Marine Headquarters and Zephyr's elite camp, and continued planning to build an independent force rather than remain tied to Cipher Pol or the World Government 104 107 113 115 116.

Reg later trained on Rusukaina, awakened Armament Haki, refined Life Return-based recovery, and developed a body-tempering method by studying Mink bioelectricity and advanced medicine. His growing influence among the Sky Islands culminated in the establishment of the Thunder Kingdom / Kingdom of Zh, where he became known publicly as the Thunder God and accepted the position of the world's sole Shichibukai 154 170 186 210 223.

As king, Reg expanded the Kingdom's infrastructure, intelligence network, trade, military technology, and diplomatic ties while continuing to prioritize his own training. His conflicts with Golden Lion, Doflamingo, Kaido, Marine forces, and other New World powers established him as one of the era's dominant figures, eventually counted among the “Two Emperors and One King” alongside Whitebeard and Big Mom 249 269 306 429 440 475.

Reg's later development of resonance, Thunder God Mode, ability rampage, and battlefield-scale lightning techniques allowed him to fight opponents such as Kaido and Akainu directly. He also reached the ancient lunar city of Birka, awakened its dormant systems, and learned of the ancient Birkans, Joy Boy, Devil Fruits, and the history connected to the World Government's rise 486 564 622 627 663 665.

Following the dismantling of the World Government, the World Federation was established under a Supreme Council divided among the Marines, the Kingdom of Heaven, and the Revolutionary Army. Colin became the Kingdom of Heaven's representative, placing Reg's kingdom among the principal powers shaping the new world order 675.

Appearance

Reg is a black-haired boy with bright black eyes, a youthful face retaining some baby fat, and a healthy complexion. He is often underestimated because of his age and childlike appearance 1 26.

• Usually wears a white short-sleeved shirt or T-shirt with black cropped pants or shorts during his early travels 1 26.
• Has a compact but heavily trained body; meditation allows him to control his muscles so they do not visibly bulge 25.
• Was eight years old by the time he left Tower Forest Island 22 32.
• Disguised himself as a girl while training on Amazon Lily 35.
• Grew substantially taller and more physically imposing through his body-tempering and Thunder God Island training, though he retained a comparatively youthful face 249 271.
• His hair can be restored through Life Return after being damaged or removed during battle 534.
• Wears formal white-and-gold royal attire for major Thunder Kingdom ceremonies 271.

Personality

Reg is intensely disciplined, pragmatic, and goal-oriented. He routinely trains, eats, and studies at the same time, treats time as a resource not to be wasted, and pushes his body far beyond normal limits 1 12 18.

His previous-life knowledge makes him unusually analytical and long-term focused. He plans around world events, evaluates political power realistically, and uses deception when necessary to protect his freedom or advance his goals 2 23 30 45.

Reg is capable of severe ruthlessness. During the Paike Crew mission, he accepted killing as necessary for survival and operational secrecy, prioritizing the mission over mercy toward enemies and witnesses 27 28 29. He later maintained this attitude in his campaigns against hostile pirates, believing that extraordinary times sometimes required merciless action 443.

However, he also displays empathy toward abused slaves, concern for Jabra, gratitude toward his mentors, and a future intention to help Hancock and her sisters if he can 4 28 30 34. He has shown comparable concern toward Cristo, Franky, Baccarat, and the civilians living under his protection, and regards a ruler's responsibility toward ordinary people as a serious obligation 184 235 362 467 521.

As king, Reg combines ambition with practical restraint. He seeks to reshape the world and strengthen his kingdom, but he avoids wars he considers strategically premature and delegates political administration so that he can remain focused on attaining overwhelming personal strength 178 223 300.

Abilities & Skills

Rumble-Rumble Fruit

Reg is the user of the Logia-type Rumble-Rumble Fruit, which allows him to generate, control, and transform into electricity 71.

• Generates electrical attacks, ranging from precise arcs and lightning spears to large-scale thundercloud bombardments 77 104 116.
• Can elementalize into electricity for extreme-speed movement, evasion, infiltration through conductive paths, and aerial maneuvering 71 72 81.
• Uses active flow to selectively solidify or elementalize individual body parts, allowing him to combine physical attacks with Logia intangibility 81.
• Can use electromagnetic waves to sense living presences, communicate with Birkan machines, interfere with signals, and guide electrical energy 72 77 663.
• Manipulates iron sand through electromagnetic force, using it for restraints, barriers, and forged weapons such as Thunder Halberd 278 309.
• Has developed large-scale techniques including Thunder Explosion, Thunder Domain: War Halberd, and Raigo: War Halberd 116 440 584.
• Uses resonance to influence electrical energy and, to a limited extent, wind, thermal, and kinetic energy, allowing him to form storms and temporary lightning-favorable environments comparable to a Logia awakening 455 486 489.
• Can activate Thunder God Mode through a specific-frequency energy circulation method, improving his physical performance, electrical control, and ability to make external objects elementalize 564.
• Can force an ability rampage that grants comprehensive enhancement and control over his internal devil power, though it temporarily prevents elementalization and carries major risks 622 627.

Observation Haki

Reg's sharpened senses developed into awakened Observation Haki after years of training and meditation 1 18.

• Senses nearby presences and predicts movements 18.
• Initially had a range of less than one meter and required absolute calm to function 18.
• Tracks rapid movements that his eyesight cannot follow, including Colin's Shave 21.
• Maps enemy positions and guards during infiltration 27.
• Detects ambushes and supports combat against multiple opponents 41 49.
• Developed his perception through continuous high-level combat, allowing him to guide Wyper's Haki awakening and recognize the latter's priest-level potential 181.
• Evolved his Observation Haki into brief future sight after fighting powerful opponents across Elbaf and the New World 324 325.
• Possesses Observation Haki superior to Katakuri's during their negotiation and perception contest, although the extent of their respective future-sight mastery is not fully specified 513.

Armament Haki

Reg awakened Armament Haki through life-threatening combat against Rusukaina's beasts 154.

• Hardens parts of his body to strike Haki users and resist powerful attacks 154 192.
• Coats his limbs and lightning-forged weapons in Armament Haki, including his orange lightning-enhanced attacks and Thunder Domain weapons 162 440 584.
• Uses Armament Haki in conjunction with Iron Body and his Devil Fruit to reinforce his defense when elementalization is unavailable or unsafe 362 622.

Six Powers

Reg mastered the complete Six Powers through Colin's instruction, self-training, and Elder Nyon's Flexibility Technique 21 22 36 45.

• Paper Art — Relaxes and shifts his body according to airflow and enemy movement to evade attacks 12 21.
• Shave — Uses repeated explosive stomps for bursts of movement too fast for most opponents to perceive 12 21.
• Tempest Kick — Creates compressed air slashes capable of cutting trees and attacking at range 12 22.
• Moon Walk — Kicks the air to maneuver and remain airborne 12 22.
• Iron Body — Hardens his muscles for steel-like defense; ordinarily limits movement while active 12 45.
• Finger Pistol — Concentrates bodily force into a piercing finger strike 12 45.
• Orange Tempest — An enhanced Tempest Kick application that combines orange electrical energy and Armament Haki with a powerful physical strike 162 417.
• Triple Gate — A combat technique used during his Rusukaina training against powerful island beasts 162.

Meditation and Body Control

Reg uses the Breath-Following Method, Life Return-related meditation principles, and the Flexibility Technique to regulate his body and improve physical control 6 34 35 36.

• Restores his overdrawn body and reduces the long-term consequences of excessive training 34.
• Improves Paper Art proficiency through increased flexibility 36.
• Is intended to naturally guide out Armament Haki once fully mastered 36.
• Lets him digest and convert large quantities of food into energy more efficiently 22.
• Uses Life Return to accelerate recovery from injuries and restore stamina, although doing so consumes substantial mental energy 170.
• Can restore his hair and regulate his physical condition through Life Return-related body control 534.

Lightning Body Tempering

Reg developed a body-tempering method by combining the Rumble-Rumble Fruit, Mink bioelectricity research, high-energy food, medicine, physical training, and controlled lightning exposure 77 186 200.

• Uses electrical currents to stimulate his body at a cellular level and improve his physical-training efficiency 200 210.
• Utilizes nutrient solution and specialized cultivation chambers to recover from extreme training while minimizing lasting damage 210 269.
• Withstood increasingly intense lightning strikes on Thunder God Island, repeatedly shedding his skin as his body adapted and grew stronger 269 271.
• Developed an electromagnetic barrier of iron sand to endure sustained lightning exposure within Thunder God Island's clouds 278.
• Gained a destructive aura through his prolonged training; unlike Conqueror's Haki, it intimidates opponents through the pressure and danger emanating from his body 279.

Combat and Infiltration

Tower Forest Island's training made Reg highly effective in stealth killing and close-quarters combat 27 41.

• Uses poisoned daggers, speed, and surprise attacks against numerically superior enemies 40.
• Prioritizes lethal strikes and maximum damage in combat 41.
• Employs disguises, false identities, interrogation, and terrain reconnaissance during missions 25 26 27.
• Has wilderness survival experience from both his previous life and Cipher Pol training 1 3.
• Combines lightning, Haki, Six Powers, martial arts, and environmental manipulation fluidly against opponents such as Doflamingo's officers, Akainu, Kaido, and powerful New World pirates 107 192 417 440 584.
• Is capable of analyzing an opponent's strengths, weaknesses, Haki, Devil Fruit properties, and battlefield conditions during combat 107 306 550.

Swimming

Before obtaining any Devil Fruit, Reg developed strong swimming ability through body training 45.

• Can use butterfly, backstroke, freestyle, and breaststroke variations 45.
• Lost the ability to swim normally after consuming the Rumble-Rumble Fruit 71.

Equipment / Weapons / Items

• Poisoned daggers — Used to incapacitate or kill opponents during shipboard combat 40.
• Gravity pants and gravity suit — Adjustable weighted training equipment; Reg eventually wore a full set totaling 1,000 kilograms 10 18.
• Log Poses — Used while navigating the White Sea; one was destroyed by the unstable cloud sea 49.
• Specialized twin-masted sailboat — Commissioned from Tom for travel through the Knock Up Stream; includes a Treasure Tree Adam keel, wing-like panels, and a balloon-like secondary sail 38.
• Gold-rimmed monocle — Given by Berg as collateral for his pledge of loyalty 44.
• Burning Dial — An extinct Dial charged by the power of ten Flame Dials; it can release an iron-cutting flame blade for approximately ten seconds 57.
• Reject Dial — An extremely powerful Dial capable of destroying a large ship, but dangerous enough to inflict severe recoil on its user 57.
• Skateboard-type Waver — A custom board fitted with two Jet Dials after Reg demonstrated immediate proficiency with Shandian Waver technology 59.
• Scepter and Thunder Drums / black top hat — Ancient Birkan tools that stabilize and control Reg's lightning. Reg later combined their functions into a black top hat better suited to his use 81 86.
• Thunder — A gold-based fighter craft modeled after Birkan technology, powered by a reduced Ark Maxim system and equipped with Iron Cloud Dial fans and Jet Dials 90.
• Thunder Halberd — A lightning-tempered, iron-sand-forged short halberd used as a high-powered weapon against Kaido and other top-level opponents 309 584.
• Mysterious Devil Fruit dagger — A damaged, seemingly animate blade connected to Devil Fruit technology; Reg recovered it for Sora's research 562.

Relationships

• Colin — Mentor and paternal figure who resigned from his instructor role to train Reg personally; revealed information about Reg's parents and supported his decision to take the P9 assessment 11 20 23. Colin later became the Thunder Kingdom's Prime Minister and the Kingdom of Heaven's representative on the World Federation's Supreme Council 269 675.
• Jabra — Close friend and sworn younger brother. Reg helped him obtain the Wolf-Wolf Fruit, and Jabra later assisted Reg in faking his death while promising to follow him again someday 8 9 30. They later reunited at Water Seven, and Reg advised Jabra to join the Marines and train under Zephyr to build his own future 113 235.
• Eileen — Fellow Ninth Tower trainee who openly shows affection for Reg, frequently hugging him despite the resentment it provokes among others 10 19 24. She later entered Marine staff work and remained emotionally affected by Reg's continued concern for her 375.
• Elder Nyon — Amazon Lily mentor who taught Reg the Flexibility Technique and a method intended to develop Armament Haki 35 36.
• Shakky — Provided Reg shelter, arranged his travel to Water Seven, and obtained an Eternal Pose for Jaya 31 33. She later fought alongside Reg's allies against Big Mom's forces 605 625.
• Rayleigh — Met Reg at Shakky's bar; listened to his history and encouraged his efforts 32. Reg later regarded him as a mentor and remained concerned upon learning that Rayleigh's Vivre Card was shrinking 443.
• Tom — Shipwright who designed Reg's specialized vessel for reaching Sky Island at a discounted price 37 38. Reg continued to trust Tom with major technological and transportation projects 113 605.
• Iceburg — Tom's worker who came to respect Reg's goal and helped present the ship's blueprint 37 38. Their relationship became more familiar over time, with Iceburg treating Reg like a younger brother 122.
• Berg — Former captain of the Collection Pirates. Reg defeated him, later accepted his conditional loyalty, and considered using his managerial talents to build influence 42 44 45. Berg became an important administrator and finance official in Reg's kingdom, and Reg eventually regarded him as a brother 269 513.
• Wyper — Shandian warrior, close subordinate, and student. Reg trained him in combat and guided his awakening of Observation Haki; Wyper repeatedly supported Reg during conflicts with Kaido and other major enemies 181 306 301.
• Issho — Trusted elder, swordsman, and adviser who trained alongside Reg's group and supported his development. Reg used his medical knowledge and electrical abilities to treat Issho's injuries 154 253.
• Cristo — A cat Mink and Mythical Zoan user whom Reg rescued from captivity. Reg supported her through her transformations and rampage, and their relationship developed into a deeply personal one 184 186 333 362.
• Dracule Mihawk — A fellow combatant and recurring sparring partner. Their first battle on Drum Island was founded on mutual respect, and Mihawk later fought alongside Reg in major conflicts 134 192.
• Gion / Momousagi — A Marine officer toward whom Reg has complicated romantic feelings. He saved her during Aqua Laguna and later resolved to speak with her directly about their relationship 122 210 429.
• Franky — Reg and Jabra recruited the abandoned young shipwright to work on Sky Island, where Franky showed immediate interest in Cloud Train construction 235.
• Sora — Researcher who assisted Reg's medical and Devil Fruit research, including the analysis that enabled his refined Thunder God Mode 210 564.
• Katakuri — Political rival and fellow elite Observation Haki user. Reg negotiated a marriage alliance and trade arrangements with him, respecting Katakuri's concern for Custard despite recognizing the limits of their agreement 513.
• Baccarat — A young woman Reg helped after she paid her gambling debt. Though he declined her offer to become his maid, he offered her work within his family's businesses and encouraged her to resist fate 467.
• Kaido — One of Reg's principal adversaries. Their repeated clashes drove Reg's growth in Haki, body-tempering, Thunder God Mode, resonance, and ability-rampage development 306 309 564 584 622.
• Doflamingo — An early enemy whose officers Reg defeated at Water Seven. Their later dealings mixed hostility, intelligence warfare, trade, and competing ambitions for the New World 104 107 274 500.

Story Role / Major Arcs

Tower Forest Island Arc

Reg enters Cipher Pol's training system, passes the initial assessment, survives the P9 wilderness trial, and becomes a Ninth Tower reserve member 1 2 3 4 5 6 7 8 9 10.

Ninth Tower Training Arc

Under Colin's guidance, Reg awakens Observation Haki, reaches Doriki 400, and masters the Six Powers needed to seek official P9 membership 11 12 13 14 15 16 17 18 19 20 21 22 23.

Paike Crew Mission

Reg infiltrates the Paike Crew as a slave, eliminates the trafficking operation with Jabra, kills Marcus's forces, and stages his own death after the mission 25 26 27 28 29 30.

Escape and Water Seven Arc

After escaping Cipher Pol, Reg stays with Shakky, trains on Amazon Lily, travels to Water Seven, and commissions a ship from Tom 31 32 33 34 35 36 37 38.

Sky Island Journey

Reg defeats and recruits Berg's cooperation, reaches the White Sea through the Knock Up Stream, encounters Shandian warriors while claiming descent from Mont Blanc Noland, and secures Sky Island equipment for his journey to Birka 40 41 42 43 44 45 46 47 48 49 50 57 59.

Birka and Rumble-Rumble Fruit Arc

Reg travels to Birka, gains the Rumble-Rumble Fruit, explores the principles of Logia abilities, and uses ancient Birkan tools to establish more advanced control over his lightning 71 72 77 81 86 90.

Water Seven Return and Donquixote Conflict

Reg returns to Water Seven, confronts the Donquixote Pirates, defeats several of Doflamingo's officers, obtains two Devil Fruits, reunites with Jabra, and escapes a CP0 attempt to capture him 104 107 113 115 116 122.

Drum Island and Rusukaina Training Arc

Reg encounters Mihawk on Drum Island, studies medicine and Mink bioelectricity, rescues Cristo, trains on Rusukaina, and awakens Armament Haki 134 154 184 186 200 210.

Thunder Kingdom Founding Arc

Reg unifies the Sky Islands, becomes the Thunder God and king of the Thunder Kingdom / Kingdom of Zh, and accepts the unprecedented position of sole Shichibukai while building an independent political and military power 223 226 228 235 238.

New World Expansion Arc

Reg develops Thunder Kingdom technology and diplomacy, undergoes intensive Thunder God Island training, expands his influence through Elbaf and Fish-Man Island, and becomes recognized as one of the New World's three ruling powers 249 269 271 278 279 296 301 306 325 475.

Great Power Conflict Arc

Reg's conflicts with Golden Lion, Akainu, Kaido, Big Mom, and their respective forces force him to advance his resonance techniques, Thunder God Mode, and ability-rampage applications 417 429 440 486 564 584 605 622 627.

Lunar Birka and World Federation Arc

Reg reaches the ancient lunar city of Birka and uncovers information about its machines, Joy Boy, the Birkans, and the origins of Devil Fruits. After the World Government falls, his kingdom becomes one of the core powers represented in the World Federation 663 665 675.

Trivia

• Reg's unusually powerful soul lets him function on roughly four hours of sleep, though it gives him an enormous appetite 1.
• He has two names: Li Chonggao from his previous life and Reg in his current one 1.
• His long-term objective was originally to reach Sky Island and obtain Enel's Rumble-Rumble Fruit, an objective he ultimately achieved 2 38 71.
• He deliberately avoids fully trusting either the World Government or pirates, believing strength determines what is called “justice” 2.
• Reg learned to operate a skateboard-type Waver on his first attempt, an accomplishment that shocked the Shandians because ordinary users require years of practice 59.
• Despite being a Devil Fruit user, Reg deliberately studied swimming before obtaining the Rumble-Rumble Fruit because he understood that consuming it would cost him that ability 45 71.
• He considers his previous-life memories useful but perishable, believing that changes to the world can eventually render them unreliable 45 521.