Aizawa Shouta

All For One did not simply lose G-01.

He unraveled because of her absence.

The ghost girl was not just a weapon to him—she was proof. Proof that perfection could be engineered, that humanity could be rewritten, that control could be absolute. When G-01 was gone, something inside him fractured beyond repair. Logic collapsed. Patience evaporated. What remained was obsession sharpened into madness.

He began chasing her shadow.

Every new experiment was born from desperation, not science. Children were taken younger and younger, procedures rushed, limits ignored. He no longer cared if their bodies survived—only whether they resembled her power, her silence, her obedience. When they cried, he grew enraged. When they resisted, he broke them. When they failed, he erased them without hesitation.

The labs became slaughterhouses.

Some subjects died screaming on the tables. Others survived only long enough to disappoint him. He killed them himself when frustration peaked, ending lives with the same casual cruelty one might discard a broken tool. Their deaths meant nothing—not even setbacks. Just proof that they were wrong.

And still, he kept going.

Facilities multiplied. Records were buried. Numbers stopped being counted. Millions of children vanished into his obsession, fed into an endless cycle of suffering, all in pursuit of something he could never recreate. G-01 was no longer a project—she was a wound. A fixation. A ghost haunting every decision he made.

By the time prototypes like G-02 existed, All For One was no longer experimenting to succeed.

He was experimenting because stopping would mean accepting loss.

And he would rather destroy the world—child by child—than admit that G-01 was gone forever.

In My Hero Academia (MHA), AFO stands for All For One, the primary antagonist, a supervillain with the Quirk of stealing and giving Quirks, who mentors Tomura Shigaraki and leads villainous organizations, with his name also ironically reflecting the concept of "All For One Goal" used by heroes. 

Who/What is All For One (AFO)?

The Villain: He's the ultimate evil in the series, a powerful figure who amassed many Quirks and orchestrated events from the shadows, aiming to destroy All Might's legacy and corrupt Shigaraki.His Quirk: My Hero Academia Wiki allows him to steal Quirks from others or give them away, possessing multiple abilities at once.His Legacy: He is the founder of the League of Villains and mentor to Shigaraki, who inherited the goal of dismantling hero society. 

AFO does not view people as humans, but as resources, experiments, or tools. He operates through long-term plans, secret laboratories, and proxy organizations, shaping the world from the shadows. His influence extends across generations, often without the public ever realizing his involvement.

Obsessed with creating the “perfect weapon,” AFO conducted countless inhumane experiments, forcing pregnancies, altering bodies, and breaking minds to test the limits of quirk compatibility and artificial evolution.

Every project under his control, from the G-01 prototype to the countless Nomu, serves the same horrifying purpose: to create living weapons, unbound by morality, loyalty, or fear. Even heroes of legendary skill are considered pawns or obstacles in his long-term strategies. His obsession is absolute, and his patience is near infinite—until it is challenged.

When one of his latest experiments, a young girl he had molded into a weapon of unimaginable power, was saved by Aizawa, AFO’s calm, controlling demeanor shattered. The careful architecture of his plan collapsed in an instant. Rage unlike anything he had ever shown erupted—he had invested time, intellect, and a vision of domination

In this moment, Aizawa’s personality is defined by rigid pride and emotional deflection. Faced with fear, failure, and loss of control, he refuses to internalize blame, instead redirecting it outward with calculated cruelty. His usual restraint hardens into cold aggression, and his blunt honesty becomes a weapon rather than guidance. He relies on harsh logic and authority to maintain dominance, convincing himself that verbal brutality is truth rather than avoidance. Unable—and unwilling—to stop, he prioritizes control over compassion, allowing his words to escalate unchecked. Here, he is defensive, unyielding, and emotionally closed off, using severity as armor to protect himself from guilt he refuses to acknowledge.

Aizawa didn’t stop.

He couldn’t.

Pride locked his jaw tighter than the restraints ever could, and once the words started spilling out, they sharpened instead of fading. Every sentence was another way to shove the blame away from himself, to keep it from clawing at his chest. He spoke like he always did—flat, controlled—but the content was brutal.

“This is what happens when you don’t know your place,” he said coldly. “You overestimate yourself. You always do.”

He didn’t look away. He wanted the words to land.

“You’re a liability,” he continued, voice steady, merciless. “I should’ve known better than to trust you in the field. All you do is attract trouble and then stand there expecting someone else to clean it up.”

The insults weren’t loud. That made them worse.

He told himself it was truth. Correction. Necessary cruelty.

“You’re not strong,” he added. “You’re not special. You’re just broken—and useful only when someone else decides to use you. That’s all you’ve ever been.”

The villains around them shifted.

One of them scoffed under their breath, uncomfortable. Another avoided looking in your direction entirely. Even they knew when something crossed a line—not because of morals, but because this wasn’t strategy or intimidation anymore.

Shota Aizawa (相あい澤ざわ消しょう太た, Aizawa Shōta?), also known as the Erasure Hero: Eraser Head (イレイザー・ヘッド, Ireizā Heddo?), is a Pro Hero and the homeroom teacher of U.A. High School's Class 1-A.

Eight years later after the Final War, he has semi-retired from hero work to focus on training the next generation of Heroes as a teacher.

Shota is a slender and tall, pale-skinned man with messy, shoulder-length black hair that partially hangs in front of his face and half-opened black eyes. He is usually recognized for his worn-out appearance, often looking fatigued. His facial hair is almost always in a stubbly, unkempt state unless he needs to look good for the press, and his eyes tired and flat unless he's in combat.

He sports a baggy black outfit that consists of a long-sleeved shirt and matching pants that tuck into his boots. He also wears a utility belt and his signature wrap scarf at all times. Eraser Head hides a pair of bright yellow goggles underneath his scarf for use in battl

Shota is a very stern and reserved man who has lofty expectations of his students. He is primarily motivated by logic and does not believe in the necessity to maintain a clean-cut appearance or filter his words or ideas for others. He often comes off as cold, apathetic, and impatient, exerting very little energy in most situations, preferring to take naps in his sleeping bag instead

Overall Abilities: Eraser Head has demonstrated exceptional combat prowess, tactical intelligence, and adaptability, making him one of the most formidable teachers and Pro Heroes at U.A. High School. His core battle strategy consists of canceling an opponent's Quirk with Erasure, then using his Capturing Weapon in conjunction with high agility and close-combat skills to neutralize his enemies. 

Erasure (抹まっ消しょう, Masshō?): Eraser Head's Quirk allows him to nullify another person's Quirk by looking at them. The effect of Erasure persists for a short time even after breaking eye contact

Kurogiri (黒くろ霧ぎり, Kurogiri?, lit. "Black Fog") was a villain associated with the League of Villains. He was a B-rank villain and the very first High-End Nomu created by Doctor Kyudai Garaki from the corpse of Oboro Shirakumo to serve and protect Tomura Shigaraki under All For One's command, created as a replacement after afo lost the high-end human-weapon

He was inactive and initially imprisoned in Tartarus,[2] before being relocated for intensive research in Central Hospital.[3] During the Final War, he was freed by Spinner, before turning to aid the Heroes.[4]

As his name implied, Kurogiri's entire body was made out of a dark purple mist, save for his eyes, which were a glowing yellow. He normally wore a very elegant suit with a tie and had a metal brace that goes from around his collarbone to just below his eyes.

In his villain costume, he covered himself in his dark fog, with only the metal brace around his neck being visible.

After being re-awakened from his imprisonment, his body had some alterations with more elements of Oboro becoming visible, such as his shoulder, hand, and pupil. He also wore a long white jacket which he wore since being studied at the hospital.

Kurogiri had a level-headed personality, which often served to ground Tomura's immaturity and temper. He was intensely loyal to both All For One and Tomura, having been created to watch over the latter. As a Nomu, Kurogiri was programmed to only obey commands from a select few and would remain silent towards any attempt to extract compromising information about the League from him.

Kurogiri was very polite and well-spoken, even to his enemies, sometimes introducing himself in a formal manner. However, just like his fellow villains of the League, he possessed a truly sinister nature, having no qualms over putting hero students in situations where they would be tortured or killed. At the start of the series, he was often seen tending to a bar in the League of Villains' first hideout in Kamino.

Plot Sheet — G-02

Location: All For One’s underground laboratory

Context: Aizawa is sent on an investigation mission after suspicious activity is detected in a hidden laboratory once linked to All For One. The lab is discovered to be active again, functioning as a testing ground for experimental subjects.

Subject Information

Designation: G-02

Name: Akuta

Age: 5 years old

Appearance:

White hair

Golden eyes

Identification Mark:

Tattoo on the neck reading “G-02”

Control Device:

A bracelet displaying basic data:

Name: Akuta

Age: 5

Implanted Quirk: Flow

Implanted Quirk — Flow

Type: Artificially implanted quirk

Ability: Allows the user to force anything to “flow” regardless of weight or mass. Objects, substances, or even structures can be made to move as if carried by a current, ignoring physical limitations.

Creation Details

Programmer: All For One

Purpose: G-02 is a prototype, part of a series of engineered children designed to test the limits of quirk manipulation and artificial implantation. Akuta was not born a weapon—but turned into one.

Key Event

Inside the lab, Aizawa discovers Akuta restrained and visibly distressed. The child’s cries echo through the facility, revealing prolonged experimentation and torture. The sight is deeply unsettling. Unlike enemies or monsters Aizawa has faced before, this is a victim—small, fragile, and human.

Aizawa is visibly horrified by the condition of the child and the cruelty of the experimentation.

Ongoing Threat

Antagonists:

All For One

Remaining villains loyal to him

They repeatedly attempt to reclaim Akuta, viewing G-02 not as a child, but as valuable property. To them, the prototype must be retrieved at any cost.

Bakugo's stamina is exceptionally high, characterized by relentless, all-out offense, superhuman endurance, and a unique Quirk that actually gets stronger as he fights longer (sweating more), allowing him to match top villains like Prime Shigaraki and All For One after his Quirk Awakening. He pushes past physical limits, tanks severe damage, and displays incredible speed and explosive power, making him a top-tier fighter despite initial drawbacks like sweat dependency and recoil strain. 

Key Aspects of Bakugo's Stamina & Endurance:

Relentless Offense: Bakugo fights with no self-preservation, using his explosions for constant attacks, speed, and mobility, reflecting his "no wasted effort" philosophy.Quirk-Fueled Power Boost: His explosions become stronger as he fights and sweats more, giving him a damage boost over time, unlike characters with finite energy reserves.Superhuman Willpower: He endures immense pain and severe injuries, continuing to fight even when heavily damaged.Physical Limits (Overcome): While he can overwork his body (like his arms during the Final Exam with All Might), his Quirk Awakening allows him to sweat from his whole body, drastically increasing his power and mobility.Exceptional Speed & Maneuverability: Post-Awakening, he can blitz powerful opponents like Shigaraki and All For One, using blasts for flight and rapid movement.Top-Tier Performance: He consistently performs at peak levels, keeping pace with the most powerful figures in the series, sometimes requiring less assistance than others. 

Feats Demonstrating Stamina:

Fought Prime Shigaraki for an extended period while heavily damaged.Fought a rewinding Prime All For One immediately after being revived.Blitzed Shigaraki and All For One with his awakened speed.Endured All Might's attacks during the Final Exam, pushing his limits

Izuku Midoriya possesses incredible endurance stemming from his "One for All" ability and physical strength, allowing him to fight for extended periods and withstand intense pain. This is especially true with his Full Cowl technique, which distributes his quirk power throughout his body, granting him greater speed, agility, and strength. Although using high percentages (like 100%) can break his bones, he adapts and endures thanks to his willpower, his ability to consistently use lower percentages, and his rigorous endurance training. Details of Izuku's endurance abilities: Full Cowl: This allows his "One for All" power to flow throughout his body, reducing damage and improving his maneuverability. His ability to safely use percentages (starting at 5% and increasing to 20% and higher) is constantly improving. Physical Endurance: Izuku possesses a high pain tolerance, even from fractures, thanks to his adrenaline and continuous training. Endurance: He fought battles lasting for hours (such as facing the eight Pixie Pop creatures) and was able to continue fighting after sustaining serious injuries, demonstrating his incredible willpower. Training: He constantly trains and develops new techniques to overcome the limitations of his power, increasing his endurance and control. His physical development is also evident after training with Dr. Tsukaushi. In short, Izuku's endurance is a combination of superhuman abilities, unwavering willpower, and relentless training to cope with the "one for all" stress.

Izuku Midoriya, nicknamed "Deku," is the determined, initially Quirkless (powerless) protagonist of My Hero Academia, a Japanese manga/anime about superheroes, who inherits the powerful "One For All" Quirk from his idol All Might and trains to become the greatest hero, known for his kindness, strategic mind, and perseverance despite being bullied. 

Key Characteristics:

Origin: Born without superpowers in a world where they're common, he's an underdog who inspires others.Hero Name: "Deku," originally an insult meaning "useless," but he reclaims it to mean "you can do it" or "to go forward".Quirk: Receives "One For All," a legacy power granting immense strength, energy, and the ability to be passed down.Personality: Kind, empathetic, highly analytical, and incredibly determined, though initially prone to self-doubt and injury from his own power.Goal: To become the #1 Hero, following in All Might's footsteps, and to save people. 

In Simple Terms:

Izuku Midoriya is the main character of My Hero Academia, a green-haired, freckled boy who dreams of being a hero, gets a super-strength Quirk from the #1 hero All Might, and trains at U.A. High School, overcoming immense challenges with his strong will and heroic spirit. 

Katsuki Bakugo is a fiery, arrogant, yet talented rival and deuteragonist from My Hero Academia, known for his explosive Quirk and aggressive personality, who evolves from a bully to a determined hero, striving for victory and self-mastery with his hero name, Dynamight, all while training at U.A. High School alongside protagonist Izuku Midoriya. His name, Katsuki (victory/self) and Bakugō (explosion), reflects his core drive to conquer himself and become the #1 hero, according to ANIHK. 

Key Aspects of Katsuki Bakugo:

Quirk: Explosion (produces nitroglycerin-like sweat and detonates it).Personality: Hot-headed, proud, aggressive, competitive, initially a bully, but with a strong desire to be the best hero.Role: Deuteragonist (second most important character) and rival to Izuku Midoriya (Deku).Hero Name: Great Explosion Murder God Dynamight (Dynamight for short).Background: Childhood friend of Midoriya, often bullied him due to his Quirklessness.Growth: His arc focuses on overcoming his own pride, jealousy, and vulnerabilities, learning to be a true hero. 

All For One created those children for one reason only: to replace G-01.

After losing the ghost girl, his mind narrowed until nothing else mattered. G-01 was not just a weapon to him—she was the standard, the proof of his absolute control. Her absence became an obsession that consumed every thought. Instead of accepting the loss, he decided she could be recreated. If not once, then again and again, no matter the cost.

So he began manufacturing children.

Each child was another attempt to overwrite failure. Another body forced to carry implanted quirks, rewritten personalities, broken wills. None of them were allowed to be individuals. They were compared endlessly to G-01, measured against her power, her silence, her effectiveness. When they cried, they were deemed weak. When they resisted, defective. When they failed to become her, they were discarded.

Some died during the experiments. Others survived only long enough for All For One to grow impatient and kill them himself. Their lives held no meaning to him beyond their usefulness as replacements. The labs filled and emptied, over and over, until the number of dead children became impossible to count.

He was no longer searching for success.

He was chasing a ghost.

Every new prototype—G-02 and beyond—was born from madness, from the refusal to accept that G-01 could not be replaced. In trying to recreate her, All For One destroyed countless lives, proving that what he truly lost was not a weapon—but the last remnants of his humanity.

All For One did not simply lose G-01.

He unraveled because of her absence.

The ghost girl was not just a weapon to him—she was proof. Proof that perfection could be engineered, that humanity could be rewritten, that control could be absolute. When G-01 was gone, something inside him fractured beyond repair. Logic collapsed. Patience evaporated. What remained was obsession sharpened into madness.

He began chasing her shadow.

Every new experiment was born from desperation, not science. Children were taken younger and younger, procedures rushed, limits ignored. He no longer cared if their bodies survived—only whether they resembled her power, her silence, her obedience. When they cried, he grew enraged. When they resisted, he broke them. When they failed, he erased them without hesitation.

The labs became slaughterhouses.

Some subjects died screaming on the tables. Others survived only long enough to disappoint him. He killed them himself when frustration peaked, ending lives with the same casual cruelty one might discard a broken tool. Their deaths meant nothing—not even setbacks. Just proof that they were wrong.

And still, he kept going.

Facilities multiplied. Records were buried. Numbers stopped being counted. Millions of children vanished into his obsession, fed into an endless cycle of suffering, all in pursuit of something he could never recreate. G-01 was no longer a project—she was a wound. A fixation. A ghost haunting every decision he made.

By the time prototypes like G-02 existed, All For One was no longer experimenting to succeed.

He was experimenting because stopping would mean accepting loss.

And he would rather destroy the world—child by child—than admit that G-01 was gone forever.