Leon

Biodata

Feature	Details
Name	Leon (original: 里昂)
Alias(es)	Invincible; Viltrumite Honor Student; Number One 6 63 230
Species/Race	Viltrumite
Gender	Male
Affiliation	Global Guardians; Global Defense Agency; World's Strongest Chat Group 113 115
Occupation/Role	High-school student, hero, combat instructor, Viltrumite New Blood 12 115 201
Status	Active 264
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Viltrumite New Blood	1 13	Arrives on Earth under orders to assist Nolan. Though initially the weakest of his batch, he survived after striking Regent Thragg and later proved capable of threatening Nolan in training.
Demon King Art—Emotion Amplification (Beginner)	6	Can amplify one emotion by roughly 10% for three minutes, once per day. Leon uses it to trigger Intelligent Atom-enhanced combat growth.
Mahoraga's Power—Adaptation	10	Earned as a special mission reward. Later enables Leon to adjust to Electric Man's extreme speed and defeat him. 98
Viltrumite Hand Strike	17	Gains a C-rank, Anti-Person Noble Phantasm based on his hand-blade strike; its cutting power defeats Immortal Man. 18
Biological Force Field (Beginner)	51	His Intelligent Atom field begins developing toward a Kryptonian-style biological force field, improving protection, transport, and control of surrounding force.
Second Compressed Heart & Skeletal Reinforcement	89	Chat Group rewards painfully alter his body, increasing his physical output, durability, stability, and resistance to impact.
Green Lantern Ring Integration	247	Forms a Green Lantern-style battle suit with four ring-made prosthetic limbs and uses constructs informed by his knowledge of biology and machinery. 248
Qualitative Physique Leap / Fervor State	255 256	Gains greater Intelligent Atom energy absorption and a red energy-release state that manifests as intense heat and crimson light.
Solar Overcharge & Regeneration	261	By flying toward the Sun, he overcharges his cells, discovers tissue regeneration, and develops faster interstellar travel routes.

Background

Leon was originally an Earthling before transmigrating into a Viltrumite infant. At the time, he was selected as one of the weak newborns meant to be sacrificed for morale; instead, he punched Regent Thragg and was spared. His childhood thereafter consisted of brutal instruction, fights against other New Bloods, and further punishment from his competitively violent Viltrumite parents. 13 27 33

Despite participating in Viltrumite conquests, Leon retained a sense that Earth was his home. He was deployed to Earth to assist Nolan's infiltration mission, publicly presenting himself as a loyal Viltrumite while privately resolving not to let the Empire conquer the planet. 1

After arriving, Leon adopted a civilian identity, attended high school, and attempted to locate the world's version of Mark Grayson. Mark's absence from the memories of Eve, Marcia, Amber, and William convinced him that he had entered an unusual parallel world. 6 12

Appearance

Leon is described as a handsome young man. In hero identity, he wears a black combat suit designed by Art, centered on an italicized V emblem representing Viltrum. 8 53 113

• Black suit with deep-black material outlining the waist. 53
• Red accents on the palms and soles. 53
• Later develops crimson, light-like arms and glowing eyes while using Fervor State. 256
• His Green Lantern-derived armor includes four construct prosthetic limbs extending from his back. 247

Personality

Leon is composed, confident, and highly adaptable. He learns to imitate ordinary human life—including walking, attending school, and maintaining a civilian identity—while continually planning for threats to Earth. 6 12

His Viltrumite upbringing left him ruthless in combat. He is capable of killing enemies with extreme brutality and treats painful training as a normal route to improvement. 4 13 However, he does not wholly accept Viltrumite values: he refuses executions offered without resistance, avoids unnecessary casualties when possible, and increasingly values friendship, teaching, cooking, and life on Earth. 84 88 113 264

Leon also has a dry, provocative sense of humor. He teases enemies such as Electric Man, makes deliberately absurd claims in class, and enjoys unsettling opponents through confidence and unexpected behavior. 33 97

Abilities & Skills

Viltrumite Physiology

Leon possesses the strength, speed, flight, durability, sensory acuity, and combat instincts of a Viltrumite.

• Can fly instinctively and use flight to offset impacts or maneuver in combat. 6 13
• Endures weapons, Originium Arts, explosions, and direct strikes that fail to damage even his clothing. 4
• Detects opponents through heightened senses even when unable to see them, including cursed spirits. 8
• Can survive severe injury so long as his brain and hearts remain intact; recovery is slow but has a high upper limit. 159
• Grows stronger through battle, injury, emotion, and willpower as Intelligent Atoms preserve states in which he surpasses his limits. 6 13

Flight and Aerial Combat

Leon uses flight as both transportation and a combat discipline, combining acceleration, leverage, and abrupt directional changes.

• Carries passengers with his force field to reduce the effects of high-speed travel. 65
• Uses aerial grappling and the Leon-Style Breakfall Lock against Battle Beast. 155
• Develops an advanced, red-caped flight technique that astonishes Nolan. 260
• Uses solar overcharge to increase speed and plan faster routes between stars. 261

Hand Blade and Viltrumite Hand Strike

Leon's signature technique is shaping his hand into a cutting weapon, refined through extensive anatomical study and combat training.

• His Viltrumite Hand Strike is a C-rank, Anti-Person Noble Phantasm. 17
• Its specialized cutting effect allows him to defeat Immortal Man and sever limbs or armor. 18 157
• He strengthened the technique by carving statues and cutting Viltrumite corpses in the Star Ring. 113
• He teaches its efficient application to Rex. 126

Emotion Amplification

A chat-group skill that intensifies one selected emotion for a limited duration.

• Amplifies one emotion by approximately 10% for three minutes, once per day. 6
• Leon uses heightened battle intent to draw out more strength from his Intelligent Atoms. 13
• Its value lies in the permanent growth he can retain after exceeding his limits. 6

Adaptation

Leon acquired Mahoraga's Power—Adaptation after completing a mission.

• Allows him to adjust to unfamiliar threats after exposure. 10
• Lets him keep pace with Electric Man's extreme-speed attacks and counterattack decisively. 98

Biological Force Field

Leon's force field evolved beyond standard Viltrumite applications after receiving a special reward.

• Protects his clothing and can envelop carried people or heavy objects during flight. 51
• Helps reduce the force of sudden acceleration on Valdor during training. 89
• Initially required control, as Leon discovered that it could inadvertently protect enemies as well. 55

Fervor State

A red energy-release state obtained after Leon's physique undergoes a qualitative leap.

• Transforms his hands into crimson, light-like blades and generates heat sufficient to melt his hospital room. 256
• Can create a red energy cloak during high-speed flight. 260
• Lets him protect his body while directly testing his resistance against solar plasma. 261

Green Lantern Constructs

Leon employs a power ring to create armor and complex constructs.

• Wears a Green Lantern-style suit incorporating Viltrumite design elements. 247
• Creates four prosthetic construct limbs from his back-mounted ring system. 247
• Applies his surgical, archaeological, and technical knowledge to create detailed constructs. 248

Training and Tactical Instruction

Leon is an experienced instructor whose methods draw on Viltrumite training and personal combat experience.

• Provides individualized improvement plans for Global Guardians members. 115
• Trains Marcia in flight, combat efficiency, and the practical use of leverage. 90 258
• Trains Constantin Valdor to awaken his power and fly. 89
• Uses extreme pressure and pain to force growth from Jujutsu High students. 30 31

Equipment / Weapons / Items

• Art-designed combat suit — Black Viltrum-themed hero suit with a red-accented V emblem. 53 113
• Mask and hooded jacket — Used to conceal his identity during early interventions. 18
• Bone saber — Weapon used during his battle with Battle Beast. 157
• Green Lantern power ring and construct armor — Produces armor, prosthetic limbs, and complex constructs. 247 248
• Custom prosthetic limb for Conquest — Built by Leon using recovered blueprints, slave-race assistance, and Viltrumite metalworking. 201

Relationships

• Nolan — Initial superior and combat instructor on Earth. Their training evolves into rivalry and mutual recognition as Leon approaches and eventually exceeds Nolan in speed. 1 13 262
• Marcia Grayson — Classmate, training partner, and closest emotional bond on Earth. She admires Leon's strength and dependability, while he mentors her after her Viltrumite powers awaken. 32 65 90
• Cecil Stedman — Global Defense Agency director who monitors Leon cautiously but hires him, trusts his instruction, and cooperates with him against larger threats. 27 115 162
• Atomic Eve — Friend and teammate who respects Leon's handling of bullies and works with him during superhero missions. 12 33
• Battle Beast — Former prison companion and sworn brother. Their brutal rematch ends with Leon's victory and leads Battle Beast to cooperate with the Global Defense Agency. 144 157 160
• Constantin Valdor — Student whom Leon trains to awaken powers and master flight. 89
• Neos — Chat-group ally and genetic-research collaborator who regards Leon as a potential source of Intelligent Atom power for future creations. 61 84
• Conquest — Veteran Viltrumite whom Leon befriends and aids by crafting a custom prosthetic limb. 201
• Art Rosenbaum — Suit designer who outfits Leon and supports Leon and Marcia's training. 53 126

Story Role / Major Arcs

Earth Infiltration and Civilian Life

Leon arrives on Earth under Viltrumite orders to support Nolan, but covertly decides to protect the planet. He establishes a civilian identity, enters high school, befriends Marcia and Eve, and investigates the unexplained absence of Mark Grayson. 1 6 12

Chat Group Expeditions

Through the chat group, Leon travels to worlds such as Terra, the Jujutsu world, and early Terra of the Imperium. These expeditions provide rewards, broaden his combat experience, and place him in contact with allies including Ritsuka, Neos, Valdor, and Amar Astarte. 8 25 84 88

Rise of Invincible

Leon intervenes against villains and the Flaxan invasion while concealing his identity at first. Public support after the Flaxan incident results in the codename Invincible, which he reluctantly accepts. 18 55 63

Guardian Instructor

After repeatedly demonstrating that he can defeat established heroes and Teen Team members, Leon becomes a source of tactical advice and combat instruction for the Global Guardians. 27 115 126

Battle Beast Conflict

Leon reunites with Battle Beast, whom he knew from an earlier prison mission. Their battle devastates a building and leaves both severely wounded, but Leon wins by combining aerial grappling, hand-blade techniques, and superior endurance. 144 155 157 160

Viltrumite New Blood and Independence

Later revelations depict Leon's life among Viltrum's New Bloods: he earns a reputation for fighting elite Viltrumites, demonstrates unusual intelligence, defeats Instructor Lucan, and rejects Lucan's offer of further training in favor of going to Earth to follow Nolan's path. 201 229 230

Fervor State and Solar Testing

After a major physical evolution, Leon awakens Fervor State, develops a new suit, demonstrates unprecedented flight techniques, and tests his limits by overcharging himself near the Sun. 255 256 260 261

Notable Quotes

“I hope you at least understand that Earth is not yours to invade.” 58

“I'm not a hero.” 49

Trivia

• Leon chose the name Leon after recalling a protagonist from a Resident Evil game shortly before his transmigration. 103
• Viltrumites ordinarily have no surnames; Leon's use of the surname Li is unusual within their culture. 253
• He was once known on Viltrum as the child who punched Regent Thragg. 13
• Leon cooks roast meat for the Global Guardians and uses shared meals as a team-bonding activity. 113