All Might

Biodata

Power Progression

Background / History

Early Aspirations and Rise

From childhood, All Might wanted everyone to live happily and chose to become a Symbol of Justice to make that possible. His mentor, Nana Shimura, entrusted him with One For All and gave her life so that he could survive AFO. He later went abroad, carrying the memory of her sacrifice and repeatedly renewing his resolve 144 237.

All Might distinguished himself during a great disaster and became the era’s foremost hero. His rise encouraged others to enter the profession: places once lacking professional heroes gained more protectors, while fewer villains dared operate openly. His influence made him both a public reassurance and a rallying point for hero society 5 117 131.

Saving Uraraka Shige

All Might saved the young Uraraka Shige during the incident in which Shige lost his arm. Previously prejudiced against All Might’s determination to keep working through suffering, Shige began to understand the burden of being society’s central heroic symbol 11 13.

Determined to repay him, Shige spent the following years training and gathering information about his anticipated battle with AFO. When tracking All Might’s schedule proved difficult, Shige redirected his investigation toward AFO and helped organize forces willing to oppose him 13 100 139.

First Battle with All For One

All Might’s conflict with AFO escalated through a nationwide campaign against the villain’s organizations. AFO retaliated with attacks and attempts to discredit him, but neither approach produced worthwhile results 138 139.

In Kamino Ward, All Might targeted Poison Chainsaw at a factory concealing drug experiments. He defeated the villains inside and began freeing prisoners, only for disguised workers to detonate explosives and additional enemies to surround the survivors 140 141 142.

When AFO joined the battle, he used transformed subordinates as weapons and disposable shields. All Might identified the conditions of AFO’s position-swapping Quirk and landed direct blows, then confronted a giant monster formed by fusing more than a hundred villains. Protecting those in its path forced him to absorb attacks while blocking its advance 144 145 147.

After defeating the monster and restraining AFO, All Might was distracted by a claim that people had died during the fighting. AFO stabbed his lower abdomen and tore out flesh and organs. All Might inflicted serious injuries in return and pursued him despite nearly collapsing. Later accounts establish that All Might won the encounter, forcing AFO into hiding, but his own injuries permanently impaired his condition 147 217.

U.A. and the USJ Invasion

All Might joined U.A. High School to train future heroes. By this time, he had also passed One For All to Izuku Midoriya, whom he believed could eventually equal or surpass him 226 237.

During the USJ invasion, he arrived with Power Loader, swiftly defeated numerous villains, rescued Eraser Head, and delegated the search for missing students. The Nomu intercepted his attack on Shigaraki and nullified the blow, revealing that the enemy had prepared a counter to his strength 233 234.

The Nomu restrained him while Kurogiri attempted to cut him apart with a closing portal. All Might briefly considered accepting death after saving the students, but rejected that resignation because society, Midoriya, and his mentor’s legacy still needed him. He shattered the surrounding terrain to disrupt his captors and escape 237.

The struggle reopened his abdominal wound. After tightening the surrounding muscles to slow the bleeding, he forced the Nomu’s arms apart and struck past it, sending the hand Shigaraki called “Father” through the USJ roof 238.

Second Battle of Kamino

All Might confronted AFO again at the Nomu factory, where their exchanges destroyed nearby buildings. Shige’s intervention brought additional combatants into the battle and culminated in the deaths of Shigaraki and Kurogiri, creating another conflict for All Might: he opposed their killers even while they were attacking AFO 273 280 287 297.

Although Shige expected All Might to treat the escaped criminals solely as enemies, All Might took an impact to protect them. He later exploited an elderly swordsman’s precisely timed attack to smash AFO’s mask and drive him through ruined buildings 282 287.

As the battle wore on, All Might insisted that AFO’s fate belonged to the law rather than vigilantes. Yamato nevertheless killed the unconscious AFO. Too depleted to stop the departing group, All Might stalled Shige while waiting for reinforcements; Shige simultaneously delayed him so his companions could escape 297 298.

All Might preserved his remaining One For All embers rather than expending them in a final overwhelming attack. Shige escaped, but the altered battle left All Might with residual power that his original-story counterpart had lost 299 300.

Retirement and Rewind

As his strength declined, All Might entered semi-retirement. After Shige defeated Endeavor and encouraged widespread unrest, All Might returned in muscle form for less than half a minute, captured several villain groups, and displaced the defeat from the headlines 381.

By the investigation into Death Omen Star’s intrusion at U.A., All Might had retired and become extremely weak. Nevertheless, he accepted responsibility for the incident and bowed while asking to participate in the investigation 412.

When AFO reappeared in a new body, he attacked All Might’s confidence by suggesting that his continued public appearances undermined active heroes. Shige then threw Eri toward All Might. Despite being knocked into a tumble and coughing blood, All Might held her securely enough to leave her unharmed 443 444.

Eri’s Rewind rapidly restored his muscular physique. The recovery was incomplete, however: One For All had already been transferred, and All Might could not feel its power returning. AFO recognized the discrepancy and exposed his inability to attack immediately 444 446.

Appearance

• Muscle form: A heavily muscular man with developed pectorals, sharply defined features, a broad forehead, and two upright tufts of hair resembling antennae or feelers 273 444.
• Costume: His heroic appearance is compared to an American superhero from the previous century 273.
• Frail form: Following his injury and eventual loss of power, he is emaciated and prone to coughing blood 13 412.
• Smile: Even while concealing poor health, he maintains a smile that reassures the public 179.

Personality

All Might defines heroism through action when someone needs protection. He refuses Shige’s argument that preserving the Symbol of Justice should take precedence over intervention, insisting that such a symbol cannot be someone who hesitates or retreats while others face harm 288.

His compassion extends to enemies. AFO exploits his anger at the abuse of subordinates, but All Might responds by seeking a faster victory rather than dismissing their lives. He also maintains that even AFO must be judged by law, opposing Shige’s companions when they attempt to kill him 145 297.

He is not immune to despair or doubt. At USJ, he briefly imagines dying honorably after completing his duties, then rejects the idea because his responsibilities remain unfinished. Later, AFO’s accusations make him question whether his post-retirement visibility has burdened Endeavor and other active heroes 237 443.

Abilities & Skills

One For All

A Quirk passed down through generations that enhances physical strength. All Might’s combat power rests on his exceptional use of it 144.

• Superhuman strength: Tears apart iron prison bars and overwhelms groups of villains with direct blows and air pressure 141 143.
• Extreme speed: Moves too quickly for surrounding combatants’ vision to track 234.
• Durability: Returns to battle after explosive attacks and impacts that bury him in rubble 144 283.
• Residual power: Continues fighting after transferring One For All, using the embers remaining within his body 299 300.
• Limits: His abdominal injury, declining stamina, and dwindling residual power progressively restrict his muscle form 238 381.

Smash Techniques

Combat Judgment and Control

All Might combines overwhelming force with close observation and stamina management.

• Identifies AFO’s position-swapping conditions through repeated attacks, then changes direction to strike the destination 145.
• Uses the reaction force from striking the air to redirect his descent 144.
• Alters terrain to deprive the Nomu of footing and disrupt Kurogiri’s restraint 237.
• Contracts muscles around his reopened abdominal wound to temporarily reduce bleeding 238.
• Resists the strongest phase of an air blast, then rides its weakening force backward to conserve stamina without endangering innocents 286.

Symbolic Influence

• Inspires increasing numbers of people to become professional heroes and discourages villains from appearing openly 131.
• Gives heroes a shared figure around whom to unite; Shigaraki recognizes this as an advantage villain society lacks 249.
• Retains enough public authority during semi-retirement for a brief return to interrupt growing unrest 381.

Relationships

• Nana Shimura — Mentor and predecessor as One For All’s holder. Her sacrifice and imagined expectations remain central to his resolve 144 237.
• Izuku Midoriya — Successor and student. All Might believes Midoriya can surpass him and deliberately preserves his remaining power to continue protecting him 237 299.
• Gran Torino — Former teacher and veteran ally, once partnered with Nana. His presence reassures All Might enough to entrust him with pursuing Shige 283 299.
• Uraraka Shige — A rescued child whose gratitude develops into years of intervention on All Might’s behalf. Their relationship becomes adversarial because All Might refuses to excuse Shige’s killings or abandon legal accountability 13 288 297.
• All For One — Longstanding enemy responsible for Nana’s death and All Might’s crippling injury. Their rivalry extends beyond combat to the ideals and public conviction each represents 144 147 443.
• Endeavor — Fellow hero and successor to the No. 1 position. All Might’s enduring public stature leaves Endeavor facing comparisons that AFO deliberately exploits 412 443.
• Stain — An extreme admirer who regards All Might as the only true hero and the only person qualified to take his life. All Might still identifies him as the Hero Killer rather than accepting his allegiance 282 287.
• Eri — Restores his damaged physique with Rewind after he protects her during her landing 444 446.

Notable Quotes

“Then I'll take you down as quickly as I can! As long as I defeat you fast enough, there's no way he'll lose his life!” 145

“When I still have so many reasons, so many things left unfinished! How can I fall here?! Smash!!!” 237

“The ‘Symbol of Justice’ people need is absolutely not someone who hesitates because of all sorts of concerns when someone is about to be hurt, when someone needs to be saved!” 288