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Toshinori Yagi — All Might

Voiced by: Kenta Miyake (Japanese), Christopher Sabat (English), Octavio Rojas (Latin American Spanish)

Debut: Chapter 1 (Manga), Episode 1 (Anime)

Playable in: My Hero Academia: Battle for All, My Hero One's Justice, Jump Force

Quirk: One For All (Formerly)

https://static.tvtropes.org/pmwiki/pub/images/all_might_hero_form_full_body_9.png
The Symbol of Peace
Click here to see his real self post-injury. 
Click here to see him in his prime. 

"It's fine now. Why? Because I am here!"

The highest ranked hero in the world and a pillar of hope and justice for heroes everywhere to follow. After an intense battle with a dangerous supervillain, he can only be his normal self for up to three hours a day. After he hits his time limit, he becomes a lanky, skeletal man who constantly coughs up blood. Only a select few staff at U.A. know this, and even fewer know the true nature of his Quirk. At the start of the story, Midoriya proves himself to All Might and inherits "One For All".

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    # - E 
  • 100% Heroism Rating: All Might is really popular as a hero, inspiring almost an entire generation to become heroes. Even during his fight with All For One when his emaciated form is exposed, people still continue to cheer him on. It says a lot about his character when even all but the most-despicable of villains look up to and respects him as the gold standard by which decency, kindness, honor, and heroism itself is measured.
  • The Ace: All Might was a straight example of this and continues to be a unique one, even though having been severely injured gave him a time limit on his powers. Gran Torino deconstructs this, noting that he took to One For All much more easily than Midoriya did, which caused his teaching methods, which worked for him, to be less effective for his protégé. All Might can also be seen as this in regard to the "One For All" lineage. Out of eight users of the Quirk, he is apparently the only one who managed to defeat All For One. Furthermore, he did this twice, though both times caused him to sustain massive injuries. Even more amazingly, All Might only had One For All while his last six predecessors had Quirks of their own in addition to One For All and yet only All Might could defeat All For One.
  • Achilles' Heel: His injured side is especially vulnerable to damage. In general, he doesn't have Superman's invulnerability. In each of his fights, he's clearly felt it every time he takes a big hit, mostly due to his declining health, though his speed and power make landing those hits quite another story.
  • Action Hero: The Symbol of Peace and the #1 hero.
  • Adorkable: He gives a bombastic entrance, and makes a grand announcement that Midoriya is in his vicinity, right before offering to eat lunch with his protégé. It's to the point where Uraraka basically went Squee!, and noted how adorable it was.
  • Adult Fear:
    • The problem that causes All Might the most trouble is that he's scared that Midoriya won't be able to accept that while he looks like a larger than life figure, he's a mortal man and be it from natural causes or being killed, he will die one day and Midoriya will have to go on without him. As such, he sometimes withholds information from Midoriya about various parts of his past, a choice that occasionally comes back to bite him. Although, All Might is also unaware that the spirits of previous One For All users live on within the Quirk and that if he dies, he will join his predecessors and possibly continue to advise Midoriya and any future One For All user.
    • His losing his Quirk and poor health means that he can no longer help his students or successor physically. It's actually somewhat of a burden where dangerous situations are concerned, like nearly being killed by training accident because he stood too close to Bakugo's explosions and forgot he isn't physically capable anymore let alone invincible, much like someone far past the prime of their life. This also means when Midoriya has a serious emergency with his powers going wild. The only thing All Might can do is beg others to save him.
  • Affectionate Nickname: David Shield calls him "Toshi". All Might himself only calls him "Dave".
  • Affectionate Parody: Of classic superheroes.
  • All-American Face: While he's Japanese, he's definitely a send up to this type of character. He's blonde with blue eyes, which follows the usual Phenotype Stereotype of a Western foreigner, massively buff when powered up, wears a costume with a red, white, and blue color scheme, and constantly goes on about justice. Hell, his Smashes are named after an American city, several U.S. states, and the U.S. itself. It's established in My Hero Academia: The Two Heroes and "Volume 0" that All Might departed for the U.S. in order to start his hero career and gain enough experience to confront All For One while staying out of the villain's reach.
  • Asskicking Equals Authority: All Might defeated so many villains that he became the #1 hero and the Symbol of Peace.
  • Badass Adorable: Much like Major Armstrong of the Fullmetal Alchemist franchise, All Might is a musclebound sweetheart whose 120% sincerity and childish enthusiasm in bringing hope and joy to everyone around him makes him as cute and lovable as a big old teddy bear; and he'll readily hug you like one too if you need a kind and caring shoulder to cry on.
  • Badass Teacher: Becomes a teacher at U.A. He will also give a beating to anyone who tries to make his students suffer. He actually isn't a badass at the teaching part of this until he loses the ability to dish out said beatings.
  • Berserk Button:
    • Don't speak ill of his beloved mentor, Nana Shimura, and that goes Plus Ultra for All For One. The criminal mastermind pushed that button so hard it enabled him to escape capture, and left All Might with near crippling injuries. The villain tries that underhanded tactic again, and it predictably works, until Gran Torino intervenes to knock some sense back into All Might.
    • The mere sight of All For One manages to piss off All Might beyond measure.
  • Beware the Nice Ones: Is almost always smiling and is the type to always lend a helping hand to anyone in need. The key word is almost. If you somehow manage to get him to stop smiling, you know you're in for it. Case in point. All Might may be Adorkable but he also fought the most dangerous villain and stripped him of his eyes, ears and nose, rendering him faceless, literally. Said criminal's head is now mostly made up of gruesome scars.
  • Big Damn Heroes: In Vigilantes, he comes to the scene when the Sky Egg starts to fall and puts it back into place, saving the heroes and civilians inside of it. Even when the remnants of the Bomber Villains become a giant monster, he deals with it again.
  • Big Good: A pillar of hope and justice for the world, with many aspiring to follow his example. Fittingly enough, he's thus the only one who matches All For One in terms of power. All Might himself invoked this, as he felt society needed a Big Good in order to not collapse.
  • Black Eyes of Crazy: Averted, of course, since he's not remotely evil; but his eyes are black with tiny, brightly glowing blue irises. It's mostly shown in his weakened state. Interestingly, Two Heroes shows that he once had ordinary blue eyes, and "Volume 0" also shows him with normal eyes, implying he started looking like this as he got older. He had his current black shaded eyes in his "debut video", which is presumably when he came back from U.S. to Japan.
  • Blood from the Mouth: Happens to him frequently in his weakened form.
  • Blow You Away: His blows are so strong he often stirs up massive bursts of air with them. These currents are strong enough to level a city block or generate enough pressure change to alter the weather.
  • Body Horror: His weakened form is extremely emaciated, constantly vomiting blood, and horribly scarred just near the ribs. Parts of his organs, in fact, seem to be gone. In the second OVA, his weakened form is so mangled and scrawny-looking that he's mistaken for a zombie by the girls of Class 1-A who hadn't been infected by the zombie virus Quirk. Then the actual infected zombies mistake him for one of them, simply patting him on the shoulder and walking past him rather than biting him.
  • Boisterous Bruiser: He actively cultivates this image as part of his desire to be a Hope Bringer, laughing loudly in the face of danger and always flashing a bright smile no matter how hopeless things seem.
  • Brains and Brawn: When he was paired up with Sir Nighteye, he was the brawn of the duo.
  • Broke the Rating Scale: All of his official stats are 6/5, which is appropriate for The Ace who is effectively this world's equivalent of Superman.
  • Broke Your Arm Punching Out Cthulhu: All Might put everything he had into taking down All For One during their climactic battle, at a point when it was already hard for him to hold his hero form for more than an hour. The effort drained the last of his energies, and now he is more or less permanently reduced to his normal state, only able to maintain his hero form for a few seconds. While this was bound to happen eventually given his passing on of One For All, this is the official story for how he lost his powers.
  • Broken Ace: Except for a few individuals, the population is not aware that All Might is actually in critical condition and his injuries limit the usage of his Quirk (until his second fight with All For One). Five years ago, many of his closest associates suggested he should quit and appoint a successor. All Might declined in order to maintain his image as the Symbol of Peace. Eventually, he does appoint Midoriya as his successor.
  • Brought Down to Badass: His ability to use his Quirk had been steadily declining since his previous battle with All For One and this decline speeds up after passing over One For All to Midoriya. He's still the strongest character in the entire series until he loses his Quirk during the final battle against All For One.
  • Brought Down to Normal: Since giving Midoriya One For All, he finds that he's slowly losing his power over time, and it will eventually stop working completely. This finally happens at the end of Chapter 94 after using the last vestiges of One For All to finally KO All For One.
  • Brutal Honesty: When Midoriya sees All Might in his true form for the first time, the latter talks about the harsh reality of being a hero. He also tells him that while there's nothing wrong with having a dream, he needs to be realistic about his situation.
  • Calling Your Attacks: In reference to how he's based off of Silver Age Western superheroes, he shouts out the names of his attacks, which are American-themed.
  • Cannot Spit It Out: Upon seeing how determined Midoriya was to prepare for his eventual battle with All For One, All Might cannot bring himself to tell Midoriya that that Nighteye foresaw his potential future death. Midoriya eventually discovers the truth.
  • The Cape: Definitely. It's almost to the point of parody.
  • Captain Geographic: All Might has a clear American theme to his attacks, which are all named rather unsubtly after American locations from a city to states to even the entire country, he's a big, tanned blonde in red white and blue, and he drops Gratuitous English like it's hot. Out-of-universe, this is a reference to the commonality of Captain Patriotic superheroes in early superhero comics. In-universe, it's explained by how he moved to the U.S. when he was first starting out as a hero (to both gain experience and avoid All For One), then when he returned to Japan, adopted his history in the U.S. as his gimmick.
  • Cassandra Truth: Midoriya tells him that he wasn't the one who moved his fingers and activated his Quirk during his brainwashing at the U.A. Sports Festival. All Might doesn't buy it at all, and tells Midoriya that the vestiges merely inspired his own willpower. Midoriya buys it and accepts All Might's explanation. Over a hundred chapters later, All Might gets proven wrong when Midoriya has a interactive dream and his Quirk turns on by itself. The seven deceased wielders really did break his fingers in that match.
  • Catchphrase: "I am here!/I have arrived!" while making a Dynamic Entry and "Plus Ultra!" when trying to be inspiring or when showing off.
  • Celibate Hero: Thanks to being Married to the Job.
  • Characterization Marches On: When first shown, All Might's teaching methods sometimes closed in to sheer jerkiness and meanness, such as sitting on a refrigerator and making Midoriya carry it, ignoring Midoriya to talk with some girls, etc. This same sort of behavior does not show up again, and he's shown as having much more professionalism than that.
  • The Chooser of The One: As the current wielder of "One For All", he chooses Midoriya to become his successor. It's later revealed that this was a very impromptu decision, since he was already being pressured and advised to choose someone else before meeting Midoriya.
  • Chronic Hero Syndrome:
    • Played partly for laughs, but prior to the U.A. villain invasion, All Might stepped in to defuse a tense hostage situation, then moved on to stop a hit and run driver, and then... well, his commute to work ended up taking up all of the time he had that day for the use of his powers.
    • Comes up again in the Vigilantes prequel. Tsukauchi actually learned All Might's Secret Identity because he kept rushing off to save people while they were having coffee.
    • Deconstructed in a way because hero work is a highly regulated position of civil service, like a policeman, he must keep up paperwork for all his heroics, and he is far behind in paperwork because of it.
  • Cuddle Bug: All Might is always there to give you a reassuring hug of hope to lift your spirit out of sadness and despair, and is never shy about using it as a gesture of how much he loves you.
  • Death Glare: He gives off an incredibly potent one, whether it be against villains who threaten his students, or even when he is acting out the part of a villain in Class 1-A's exercise against Midoriya and Bakugo. When you see that glare, you can try to run, but you probably won't get very far.
  • Deconstructed Character Archetype: The series uses All Might to pick apart the implications of having a superhero who's The Cape and the Big Good, in several different ways:
    • First off, All Might himself is actively putting on the facade specifically for the sake of giving people someone to look up to. He genuinely is a good person, but the pressure of having to uphold that image repeatedly causes him to doubt whether he really is as much of a hero as he makes himself out to be.
    • All Might essentially is the ideal hero... but this means that he may have set the bar for superheroism a bit too high. On the hero side, it means that other heroes end up with inferiority complexes and/or serious envy when they can't measure up. On the villain side, a number of villains do respect him, but think every other hero who doesn't stack up to All Might is obviously a false hero who must be eliminated. And then there's the fact that being the Big Good makes him a target for the villains who want to destroy the hero establishment.
    • When All Might retires after using up the last of his powers, it creates a minor crisis as there's nobody else capable of serving as the series' Big Good. It turns out staking everything on one ideal hero is a bit of a problem if the hero can't keep being a hero for whatever reason. In fact, the people responsible for the first Provisional Hero License Exam following All Might's retirement put a strong emphasis on teamwork so society would begin to focus on several heroes at the same time.
  • Determinator:
    • When it comes to protecting the innocent and punishing evildoers, All Might simply will never give up. Even when he's nearly exhausted all of the energy he needs in order to hold onto his muscle form, he manages to unleash Rapid-Fire Fisticuffs on the Nomu attacking USJ, with each individual punch being even stronger than usual:
    "A real hero...will always find a way for justice to be served!"
    • Proven during his rematch with All For One. At this point, All Might is practically Quirkless and is running on fumes, while All For One has over a dozen super strong Quirks. Despite the dire odds, All Might defeats All For One, albeit he loses his powers forever and fractures his arm.
  • Deus ex Machina: In Vigilantes, he is recognized and described by the Big Bad as one, which justifies that he works in the story as one as well.
  • Deuteragonist: While the series as a whole is a Coming of Age story for Midoriya, All Might's influence and character arc drives the story just as much as Midoriya's journey, so he shares this role with Bakugo.
  • Double Meaning: All Might's parting word after defeating All For One: "You're next." To the masses, it's a warning to the villains at large. To those in the know and Midoriya in particular, the torch has been passed and the age of All Might is over.
  • Dumb Muscle: In his youth. In stark contrast to his successor, All Might never had any problems physically using One For All like Midoriya does, but he lacked the sharp mind his student possesses. It worked out for All Might as he became a Genius Bruiser. Unfortunately, All Might admits that because how different they were as young men physically and mentally, this makes it hard for him to teach Midoriya at times because he legitimately doesn't understand some of the problems the latter is having.
  • Dynamic Entry: Does this quite a bit, in contrast to his true form which staggers around beneath notice. It's to the point that "I am here!" is his catchphrase.
  • Eagleland: Predominantly because of his Silver Age traits, and despite being Japanese and not actually American, he tends to exhibit signs of the first type. For example, his workout plan for Midoriya invokes the classical American Dream in its name... and the notion that those born with nothing, can one day achieve the greatest success if they work hard to earn it. Additionally, as aforementioned, his attacks are American-themed. Two Heroes reveals that he actually did live in America for a time, which influenced his American-themed attacks and his hero costumes.
  • Embarrassing Ringtone: All Might's ringtone turns out to be a recording of himself saying "A phone call is here!" (a play on his Catchphrase "I am here!"). His fellow teacher and pro hero Midnight thinks to herself how lame it is.
  • Empowered Badass Normal: It is revealed that much like Midoriya, All Might was originally Quirkless, having been given his unmatched power from his own mentor and predecessor. It is also revealed that All Might was the first Quirkless person who wielded One For All. All his predecessors were born with a Quirk of their own.
  • Engrish: In the Japanese dub, he peppers his sentences with English words and phrases with varying degrees of success.
  • Enhanced Punch: His various Smash techniques are performed by channeling great deals of One For All's power into his fists, culminating in United States of Smash, which channels 100% of it.
  • Exact Eavesdropping: Walks by the hospital door exactly when Midoriya offers Mirio the power of One For All from outside of the latter's hospital room.

    F - N 
  • Famed In-Story: He's always swamped by reporters and fans because of how popular and famous he is. Even outside of Japan, he's immediately stampeded by the paparazzi as soon as he's spotted in a public area.
  • A Father to His Men:
    • He technically has only one man, Midoriya, but their relationship is very akin of a father and son. All Might often treats and trains Midoriya in a manner similar to how a stern but loving father would do to his son, considering that Midoriya's real father never appeared in the whole series and is only mentioned once. All Might often borders on being a Parental Substitute.
    • He tried to pull this off with Bakugo once, with predictable results.
  • For Great Justice: As a boy, All Might came up with the concept of the Symbol of Peace to drastically minimize crime rate. His master, Nana Shimura considered his goals to be weird, but she nevertheless took him as her apprentice and transferred One For All to him. All Might's successor also believes in this trope. This is also in stark contrast with All For One's For the Evulz motivation.
  • Game-Breaking Injury: All Might suffers from this as five years before the main story, he took a devastating hit from All For One, which nearly killed him. While he survived thanks to numerous surgeries, his powers are so disrupted that he can only use them three hours a day. When he powers down, he looks like a emaciated husk of his former self that constantly keeps coughing up blood. Regardless, he keeps up his hero duties, with only Midoriya and a few of the top officials knowing about what happened, as he doesn't wish for people to lose faith in heroes like him.
  • Gentle Giant: All Might is seven feet two inches tall. He is also always ready and willing to give a reassuring hug and his broad shoulders to cry on to anyone who is in sadness and despair. Even in his weakened state, he easily towers over any other character and is still as sweet.
  • The Glomp: He has a tendency to hug both David and Melissa very boisterously, even lifting them off the floor.
  • Gratuitous English: Frequently as part of his Large Ham tendencies:
    All Might: [in the Japanese version] Oh my... oh my... GOODNESS!
  • Hair of Gold, Heart of Gold: What All Might's true form used to look like. That is, before sustaining his near crippling injuries from All For One.
  • Handicapped Badass: All For One severely injured him before the start of the story. All Might went through numerous surgeries to stay as functional as he is now, but he still lost his stomach and a lung and regularly coughs up blood. These injuries also impair the use of One For All, as his body can't handle the strain for more than a few hours, a timeframe that shortens as the series goes on and he continues to push this boundary. Nevertheless, he managed to continue his heroics so successfully that he managed to completely hide his injuries and time limit from the public.
  • Hero Does Public Service: Hardly any job seems too small for him. Be it punching out villains or going out of his way to save a cat from a tree as seen in the Vigilantes spin-off.
  • Heroic Build: His muscle form, obviously.
  • Heroic BSoD: When All For One reveals that Tomura Shigaraki, a criminal that he's been pursuing, is actually the grandchild of his beloved mentor, Nana Shimura, All Might is horrified and filled with guilt. It takes a plea for help from a nearby civilian to snap him out of it.
  • Heroic Resolve: Despite his weakening condition, lives and breathes this and tends to inspire the same from the people around him. Midoriya in particular.
  • Heroic Second Wind: Over his time limit and severely injured, All Might is spurred into action again by the civilian he needs to save and the people looking on.
  • Hidden Eyes: In his heroic form, they gave him this as an aesthetic choice. Rather than the usual implications of this, it's to make him look more dramatic, rather than emotional or scary. It kind of helps that he actually has black sclerae.
  • History Repeats: Nana did the same "You're next" declaration to announce she was officially Passing the Torch to All Might as All Might did for Midoriya, pointing to them mid-fight while the pupil cries.
  • Honorary Uncle: Melissa Shield, the daughter of All Might's best friend, David Shield, calls him "Uncle Might".
  • Hope Bringer: Everyone feels better at the very sight of his presence in the field, as his status as the Symbol of Peace has reassured everyone of their safety from the moment he arrives:
    All Might: Never fear! For I am here!
  • Hour of Power: Thanks to his injury, he can only tap into his full strength for a few hours a day. After giving Midoriya One For All, this time gradually grows even shorter. All For One explains that this is because All Might is now exclusively using the remnants of One For All as opposed to the full power he once had and the more he uses it, the weaker his power becomes. At end of his fight with All For One in Chapter 94, All Might has now permanently used up the last remaining dregs of One For All.
  • Hypocrisy Nod: He tells Midoriya that he can't recommend someone who's Quirkless becoming a hero because the pros have to risk their lives in the line of duty. Later, he's stuck watching a villain take someone hostage because he's hit his limit for the day when Midoriya throws himself into harm's way trying to help. It hits All Might like a freight train that he isn't living up to his own ideals and he forces himself to power up despite the pain to save both boys. He cites this as the reason he wants to give One For All to Midoriya. And to add onto this, Toshinori himself was originally Quirkless before inheriting One For All just like Midoriya.
  • I Work Alone: All Might very rarely takes on a sidekick, as that would run the risk of revealing his secret. However, Sir Nighteye's insistence in becoming his sidekick eventually led All Might to accept his help, making him an exception. Another exception was when he took on a sidekick while he was starting out his career in the U.S., that being David Shield. They eventually went their separate ways, however, with David becoming an independent scientist who won a Nobel Prize for Quirk research, though they still have a positive relationship.
  • Icy Blue Eyes: In his superhero form. They glow prominently whenever he gets serious.
  • Ideal Hero: Powerful yet kind-hearted, All Might continues to strive as an example of selflessness, decency, and justice in spite of his gradually declining powers.
  • In a Single Bound: Covers great distances this way. Best seen in the second opening of the anime.
  • Innocently Insensitive: Make no mistake, All Might is an extremely compassionate and kind-hearted person, but he does have his moments. Chief among them is never telling his protégé, a Quirkless fanboy, that he also wasn't born with a Quirk. This no doubt would've meant the world to Midoriya when they started training, but All Might didn't think to tell him until much later. Why? Because Midoriya never asked.
  • Instant Expert: He instantly got the hang of using One For All at maximum power when he obtained it, which contributes to his inability to teach Midoriya how to use it. This bites everyone in the ass later, since All Might never struggled with the Quirk he was incapable of having visions like the other wielders. This makes him have no real knowledge about the truth of One for All and All for One. As one fan described it, "He skipped to level 100 without watching the cutscenes and beat the final boss using a limited moveset."
  • Invincible Hero: All Might remained undefeated throughout his career. However, not all of his victories were easy. Especially against All For One.
  • Irony:
    • While regarded as the most powerful person of all time, not many know that All Might was born Quirkless. He was later granted One For All by Nana.
    • Despite being the physically strongest and most famous of all One For All users, All Might has almost no compatibility with the metaphysical aspect of One For All. All Might was able to quickly master One For All's physical abilities and never had to struggle like Midoriya. Unfortunately, that left him mostly ignorant about the vestiges of One For All. Only Nana and Midoriya have gone further.
  • Knight In Sour Armor: On the surface, All Might is kind and cheerful. However, he is also someone who is painfully aware of the grim reality of the hero career, something he tells Midoriya during their first meeting. All Might is still haunted by his master's death.
  • Lantern Jaw of Justice: His superhero form.
  • Large Ham: If his bold outline and loud personality didn't make it obvious, he is constantly spouting speeches about heroism and how it's important for him to be the Symbol of Peace.
  • Leeroy Jenkins: Gran Torino describes him as the "punch first, ask later" type.
  • Leitmotif:
    • "I'm Here!", a majestic orchestral piece suitable for the arrival of the world's greatest hero.
    • "Y.A.M. - Young All Might" is an energetic, groovy theme that sounds like it came straight out of the '50s with just enough of his future self's leitmotif to make sure the listener knows exactly who this song is for.
  • Lightning Bruiser: Very few people can keep up with his sheer strength and speed. His only weakness is the time limit that his muscle form has.
  • Like a Son to Me: In Two Heroes, Midoriya asks if it's really okay for All Might to take him to I-Island with him, since the companion pass in the invitation is supposed to be for someone extremely close like a relative. All Might assures him that through One For All, their bond is thicker than blood.
  • Limit Break: His most powerful move, only used against All For One, United States of Smash, where he channels all of his power into a haymaker so incredibly powerful that he creates a massive tornado from the sheer force alone (a tornado powerful enough to lift concrete buildings).
  • Locked Out of the Loop:
    • Strangely, although All Might quickly mastered One For All's use, he knows next to nothing about the vestiges. This becomes a problem when his successor starts having strange experiences with One For All. Later, it is revealed that Nana also had an experience somewhat similar to Midoriya, something All Might had absolutely no clue about. This also means that he has no knowledge of what is happening to Midoriya now that One For All has passed the singularity and is doing horrific things to the latter's body. Turns out even All Might had no idea that One For All was secretly stockpiling Quirks of the previous users and bolstering them. In his defense, all the predecessors were ignorant of this when they were alive. Midoriya only discovered it when he was told by a deceased predecessor of One For All.
    • All Might knows nothing about the One For All users who had preceded Nana. He only knew a vague story of One For All's origin and even then All Might admitted he didn't understand why All For One gave his brother the stockpiling Quirk. His successor, Midoriya begins to rediscover the truth of One For All from the deceased users who have been revived as spirits.
  • Lonely at the Top: All Might's goal was to become a pillar of hope for society, and he was very successful at it to say the least. However, it's implied that he burned a few bridges in the process, like in the case of his former sidekick Nighteye, so that he could attain and keep such status.
  • Married to the Job: It's heavily implied that he had no life or free time outside of his hero work before his injury, so much so that he can use his own real name and small form as a secret identity because no one knows him.
  • Meaningful Name: His surname contains the kanji for "eight", referring to him being eighth wielder of One For All. It also has the character "tree/wood" in it, which likely refers to him being the pillar that currently upholds society as it is now. His hero name, All Might, is a spin on the word 'almighty', showing his unmatched strength and status as the number one hero, and renowned symbol of peace.
  • The Mentor: Deconstructed:
    • All Might might be a good hero, but he never had to teach anyone anything in his life. In fact, he only had two sidekicks in his career, and one of them was a scientist who's functionally Quirkless,note  while the other was a Badass Normal Guile Hero with a non-combat Quirk. As such, his tenure as a teacher at U.A. begins with him having no experience in teaching aspiring heroes how to use their Quirks more effectively. Unfortunately, this means that while he's the World's Best Warrior, he's also one of the worst mentors available. In fact, All Might's status as an awful mentor is lampshaded by almost every other mentor available and he has to learn how to teach from the ground up, even reading Teaching for Dummies.
    • In Midoriya's case, having transferred One For All in a hurry, All Might watches helplessly from the sidelines as Midoriya drags himself through the baby steps — like learning how not to break his whole arm — and ends up relying on other figures to put Midoriya in useful situations. At one point, All Might's old teacher Gran Torino feels obligated to step in. Not to mention All Might couldn't actually use One For All for any of its real abilities. When Midoriya obliterates his dorm room using a power All Might never had, All Might does nothing to stop him from participating in a mock battle later in the day despite two of the top staff at U.A. being in the loop that could. This leads to Midoriya nearly injuring or killing his classmates and himself while All Might could do nothing but watch.
    • When it comes to testing the students, he has a bad habit of going blatantly overboard and forcing the students to go all out, which causes them to force trauma upon themselves.
  • Mentor Occupational Hazard: An interesting example in that All Might is aware that this could happen to him, with him passing One For All to Midoriya with his already diminishing strength. So he repeatedly tells himself that it's likely that he won't be alive long enough to see Midoriya become the next Symbol of Peace. This is subverted in the villains' attack at USJ, the first time All Might appears without his signature grin, facing off against an Evil Knockoff of himself. He barely wins. In his final battle, after multiple arcs worth of death foreshadowing, it's staunchly defied. He uses up his remnants of One For All, which was going to happen soon anyway, and instead of dying, he vows to live and be there for Midoriya.
  • Moment of Weakness: In Chapter 1, he nearly abandoned Bakugo to a supervillain because he had reached his daily limit. Seeing the Quirkless Midoriya rush said villain in an attempt to save Bakugo convinced All Might to break his limit regardless of the risk to himself to save the day. This incident was what convinced All Might that it was time to pass on the torch and that Midoriya was a prime candidate for it.
  • Mundane Utility: Sometimes he transforms into his muscular hero form momentarily just to look cooler, such as one instance where he transformed as a greeting.
  • My Suit Is Also Super: Two Heroes reveals that All Might's outfit was specially designed by David Shield to be incredibly durable, allowing it to withstand the incredible force of One For All and even that of a full blown natural disaster like a tornado.
  • Nice Guy: All Might's warm heart is as big as his muscles, and he's as kind as he is powerful. To him, giving people hope, joy and kindness is just as important, if not more so, than smacking villains into the ground.
  • Non-Standard Character Design: To go with his Large Ham personality, he is drawn in a thicker outline and has more shading than everyone else. He specifically has character design elements associated with the comic book creator Rob Liefeld, including a variant of the "Youngblood's disease" as his eyes are often hidden in heavy shadow or appear to be glowing. Ironically, this also means that despite being most inspired by a comic book art style it means he looks a more like a villain or morally dubious individual than he is intended to. His "true form" is also very different from everyone else, but in a more conventionally cartoonish and lanky sort of way. A few students even acknowledge this when he enters class for the first time.
  • Not So Different: Reveals to Midoriya that he used to be Quirkless himself before getting "One For All" and pretty much had the same drive he did when he was younger.
  • Nothing but Skin and Bones: His "true form" is this. His body has wasted away after losing most of his respiratory system and having his entire stomach removed.

    O - Z 
  • O.O.C. Is Serious Business:
    • When he arrives during the League of Villains' assault on USJ, All Might isn't smiling. This is All Might we're talking about here; he is always smiling while in hero mode. The fact he isn't smiling makes it clear how he feels about the villains trying to get at him through his students.
    • When preparing for the mission to rescue Bakugo from the League of Villains, he expresses the desire to use a darker version of his "I am here!" catchphrase; rather than announcing his arrival in a way that makes people feel hope, he wants it to instill fear in the villains about how he's going to make them suffer for abducting his student.
  • Oblivious To Hatred: He seems to view Endeavor as an acquaintance. However, Endeavor hates him and always brushes him off due to his desire to one-up him.
  • Occidental Otaku: His costume, visage, and attacks all pay tribute to the United States of America, the birthplace of Quirk-powered heroes in the setting.
  • Only Known by Their Nickname: Sort of. "All Might" is his hero name; but even in-universe nobody knows his real name, except for Gran Torino. Since he seeks to be seen as a symbol first and foremost, he conceals any kind of personal information about himself.
  • Origins Episode: Two Heroes tells, among other stories, All Might's backstory as a young hero. Volume 0, a tie-in manga released with Two Heroes, shows how All Might lost his mentor at the time, Nana, and moved to the U.S. to train far away from All For One.
  • Papa Wolf: As the villains who attacked Class 1-A found out, trying to hurt his students is an easy way to get on All Might's bad side.
  • The Paragon: All Might isn't the "Symbol of Peace" just because he's incredibly strong, but because he's devoted to inspiring the good in others. Many of the world's other heroes and heroes-in-training aspire to follow his example. This is shown to have serious consequences once he finally has to step down, with the news filling the airways and inspiring long-suppressed criminal organizations to rise up again.
  • Parental Substitute: His interactions with Midoriya are akin to a father-son relationship. In Two Heroes, he says that the thing that connects him and Midoriya is thicker than water when Midoriya questions why All Might is inviting him to go to I-Island instead of a family member.
  • Passing the Torch: How "One For All" works. It's a unique Quirk that is nurtured and passed down from generation to generation.
  • Perpetual Smiler: In his powered up form, he nearly always has a giant grin on his face, though this is usually an act in order to reinforce the idea that he's an unassailable symbol of peace and justice.
  • Person of Mass Destruction: He's strong enough that, even when he only has the dying embers of One For All powering his body, his fist clashing with All For One caused this. An entire ward of Tokyo was devastated by their battle.
  • Phenotype Stereotype: Subverted. His blonde hair and blue eyes fit his Westernized All-American Face image, but he's actually Japanese.
  • Physical God: He's such a massive step up in power from the rest of the heroes that he's practically a deity in comparison. It's to the point where, when Midoriya and Bakugo faced him during their final exam, the normally arrogant Bakugo could only look stunned at him, and think to himself "he isn't just powerful, he is power." The fact that the normally arrogant and self-assured Bakugo could only describe All Might as power incarnate says all. And this is against an All Might who's both past his prime and restrained by weighted wrist and leg bands so as to make the test at least theoretically winnable for the first year students:
    "He's a true superhuman who is in another league compared to the rest of the heroes. A Deus ex Machina who seems to defy the laws of physics and fate itself at every turn."
  • Pre-Asskicking One-Liner:
    • During his fight with Nomu:
    "So, you were made to fight me, big guy?! If you can really withstand me firing at 100% of my power...then I'll have to go beyond that and force you to surrender!"
    • During his fight with All For One, just before delivering United States of Smash:
    (in response to his opponent's comment that his punch's gotten weak) "That's because I didn't put my back into it! United...States of... SMAAAASH!!"
  • Primary-Color Champion: As seen above, his hero costume contains blue, red, yellow and white.
  • Psychologist Teacher: Midoriya isn't the only student All Might tries to mentor after joining U.A.'s faculty as Bakugo and Todoroki also bring out his mentor side. He is also shown to be very encouraging to pretty much all his students.
  • Pyrrhic Victory: He managed to defeat All For One twice but that came at a great cost. The first time his respiratory organs and stomach were irreparably damaged and the second time he lost all access to One For All's power, because he transferred the Quirk to Midoriya.
  • Rapid-Fire Fisticuffs: Beats Nomu by punching him 300 times.
  • Reality Ensues: Just because you're the greatest hero in the world doesn't mean you'll be a particularly great teacher. He naturally mastered One For All very quickly, so when his successor struggles to control it, he's not nearly as helpful as he would like to be. Midoriya learns much more from other pro heroes and his fellow students than he does All Might directly. He gets better, but it takes awhile. He only seriously seems to improve after barely surviving his final battle, having reached the revelation that he has to be a better teacher.
  • Recoil Boost: New Hampshire Smash has All Might punch the air to redirect himself, often leading into an elbow strike. Even while holding way back, the force of this attack nearly snaps Midoriya's spine.
  • Red Baron: Known as "The Symbol of Peace".
  • Renowned Selective Mentor: Passing One For All is done very selectively, considering its power. On top of that, All Might has very strict standards for taking on an apprentice. But of course, this is all done in secret with only a few in the know. The public at large knows he's only ever had two sidekicks, but they don't know that the reason is make sure as few people as possible know about One For All rather than just because he's picky.
  • Required Secondary Powers: Those thick muscles aren't just for show. All Might has no issues with damaging his own body using One For All, like the lean teenage Midoriya does, implying a superhuman level of durability to match his strength. Indeed, he can take things like Bakugo's explosions with some pain but no real danger.
  • Samaritan Syndrome: In the aftermath of the mall incident, Midoriya asks him if there's anyone he hasn't been able to save. All Might acknowledges that he can't save everyone, but that's only even more reason to keep on a brave face for the world.
  • Scissors Cuts Rock: The first Nomu was designed to match the strength of his punches and absorb the impact of 100% of his blows. All Might responds by going beyond 100% and ultimately sending Nomu flying:
    He said your Quirk was only shock absorption, not Nullification. That means there's a limit to how much you can take, right?
  • Screw Destiny: When Sir Nighteye predicted his demise, and he had never predicted wrong, All Might quite literally said that he would just change his own fate.
  • Secret Identity: Vigilantes reveals this is how he hid his weakened body from the public, spending his time as All Might's "Secretary Manager" under his real name.
  • Secret Identity Vocal Shift: He speaks in a booming and enthusiastic voice fit for a superhero; as civilian Toshinori Yagi, he sounds tired and deadpan. This has less to do with preserving a secret identity and more to do with keeping up his image as the tireless symbol of peace and justice.
  • Showy Invincible Hero: What he is In-Universe. All Might is the strongest hero who is known for always winning his battles and saving everyone once he appears as the Symbol of Peace. Of course, the truth is a little more complicated. And as the Symbol of Peace, he can't ever lose a battle or else the public's faith in the hero system will be shattered.
  • Sink-or-Swim Mentor: If you think Aizawa is bad, All Might is even worse. Any poor soul paired up with him as their teacher/mentor for the day should expect a merciless beating. Doesn't matter if you're only in your first year, All Might will take you as seriously as he would a villain.
  • Slave to PR: Being a major source of inspiration for up and coming heroes for future generations in addition to being the Symbol of Peace and Hope, All Might doesn't show his weaker side to the public as it would destroy that image. When his secret is revealed to the public, however, they still respect him.
  • Spin Attack: Oklahoma Smash.
  • Stepford Smiler: Puts on a brave face in hero mode to live up to his reputation as a symbol of justice, but is all too aware that he's a fallible human being and that the day is rapidly approaching when he can't be a hero anymore. Chapter 92 reveals that he does this on the encouragement of his mentor, who argued that the people he rescues have been through a lot of trauma, so he should smile so as to save their hearts as well as their lives.
  • Story-Breaker Power: In his prime. Even in his greatly declined present-day state, the plot often still requires a Drama-Preserving Handicap just to give other characters something to do.
  • Strong and Skilled: All Might has Super Strength, Super Speed, and Super Toughness, which he combines with his keen tactical sense and refined punch techniques. The official guide lists him as the only hero who has 6/5 points in every hero category (power, speed, technique, intelligence, cooperativeness). Even though he is way out of his prime, he is still the top ranked hero in the world. This is later played with when it's revealed that he never had any affinity for the more metaphysical aspects of One For All, and as such he could never interact with the vestiges nor gain their Quirks. However, he mastered the physical enhancement aspect of One For All so completely that he was able to defeat All For One twice using just this one fragment of the power.
  • Super Speed: In his massively declined present-day state, roughly half the speed of sound (as he was able to cover 5 KM in 30 seconds, which equates to roughly 600 KM/H). All For One notes that this is much slower than he used to be.
  • Super Strength: One For All. The strength boost also provides Super Speed and In a Single Bound.
  • Super Toughness: To a degree. He is able to take a point blank blast from Bakugo's explosive gauntlets without slowing down and is able to get blasted through several city blocks worth of buildings and keep on fighting. Although beings on his level of power (such as All For One) can hurt him, he's basically Nigh Invulnerable for almost anyone else.
  • Superheroes Wear Tights: Every hero costume he has is a variation of this.
  • Superior Successor: As One For All is cumulative, he surpassed his predecessor in using it. This is how Midoriya will eventually surpass him. On the other hand, he's far better than Midoriya in other ways. He was able to use One For All perfectly the moment he got the power and had near infinite confidence. His successor's luck with using the power so far has been a train wreck that has nearly crippled him and is burdened with severe self-esteem issues. Luckily, Midoriya still has a long road ahead.
  • Superman Substitute: He's got the powers (although by the present day story "only" at roughly Golden Age level), the costume, the attitude, and the role, though he's not an alien.
  • Tactical Withdrawal: Volume 0 shows that once All For One defeated Nana, All Might was his next target. Gran Torino intervened and sent him abroad as soon as he graduated U.A. so he could train and gather experience somewhere where All For One has less influence and wouldn't be able to go after him so easily.
  • Take a Third Option: After defeating All For One, One For All has run out for him, and he's facing retirement. That said, the world still needs a Symbol of Peace before the torch is fully passed to Midoriya. Thus, he says "You're next" towards the camera, and delivers it in a way that does both; the general public think he's out to get any other villains out there, inspiring hope for the people and fear from the villains, but Midoriya knows he actually means it'll soon be his turn to be the Symbol of Peace.
  • Technology Marches On: invoked He mentions this when he notes how Hatsume's special gloves for Midoriya are quite compact compared to the larger and bulkier stuff he used back as a rookie hero:
    All Might: So this is how compact they can make it these days...
  • Two-Timer Date: A variant. Tsukauchi arranged for meeting All Might, but had to settle with Mr. Yagi, All Might's "Secretary Manager". But things kept happening outside which caused Yagi to repeatedly excuse himself to the toilet, be All Might and save the day. In the end, it's the fact that he forgot to return the cat he just saved and failed to button his shirt and cover his All Might costume that tipped Tsukauchi that Yagi is All Might. Thankfully, he agreed to be his Secret Keeper.
  • Up to Eleven: His fight with Nomu had Nomu able to match him blow for blow at 100% of his power, so he pushes himself beyond 100% and completely curbstomps Nomu:
    All Might: You may have heard these words before, but I'll teach you what they really mean! Go beyond! PLUS! ULTRA!!!
  • The Unchosen One: Like Midoriya, he was born without a Quirk into a world where being Quirkless was rapidly disappearing with no way to fight injustice, and only became All Might because he proved he was truly heroic. But unlike Midoriya and his predecessor, Nana, All Might has almost no compatibility with the esoteric aspects of One For All and remained ignorant of the Quirk's true power.
  • Unskilled, but Strong: Retroactively revealed to be this. He had no idea about the true depths of One For All, so he never was given the chance to use any of the powers within it, and only had the surface level abilities given to him. He mastered the raw power of the Quirk without using its greater skills.
  • Unstoppable Rage: Upon seeing All For One again after their last battle he is seen visibly more pissed off than anyone has ever seen him be. All For One then proceeds to push a soft spot for All Might by mocking his master Nana Shimura, which makes him even more angry.
  • Vague Age: How old is All Might? Mid-20s? 30s? Possibly in his 40s? The manga never makes it clear and the fact that he looks like a teenager in his weaker form only adds more fuel to the fire. When Midnight asks how many years have passed since he studied in America in a special episode, he deflects the question by coughing. His mentor has a grandson who's 20, Sir Nighteye, one of his sidekicks, is 38, and David, who he was a contemporary in college, has a 17 year-old daughter, so he's at least in his late 30s, very likely early-to-late 40s.
  • What the Hell, Hero?:
    • All Might often gets this about his teaching method toward Midoriya. Recovery Girl and Aizawa have both chewed him out for not going far enough to teach Midoriya how to use One For All without hurting himself and Gran Torino outright says that All Might is a terrible teacher. He gets chewed out again by Recovery Girl after his brutal spar with Midoriya and Bakugo came within a hairs-breadth of permanently disabling both boys.
    • He gives one to Midoriya for going with some students to rescue Bakugo despite the risk of injury, even hitting him with a Texas Smash in his weakened form. This is then downplayed as All Might turns the scolding into a So Proud of You speech, praising Midoriya for finding a way to rescue Bakugo without actually fighting any villains, and thus not technically breaking the law by doing hero work without a license. He promises to be a better teacher now that he no longer has One For All anymore.
  • What You Are in the Dark:
    • His initial Wax On, Wax Off training with Midoriya involves... cleaning up a trash-covered beach. All Might proceeds to explain that being a hero isn't just all about the big flashy stuff - the small, unglamorous things are important too.
    • His injuries and emaciated real form make most of his heroics a case of this. As his real form isn't recognizable as the great hero All Might, he can (and does in the first chapter) stand unnoticed in a crowd of civilian onlookers watching a villain rampage. When Midoriya, who's in the same boat, chooses to do something anyway, All Might realizes he's failing this particular test.
  • Worf Had the Flu: In Two Heroes, All Might is running on fumes due to the strain of maintaining his muscle form all day long, preventing him from just ending the fight as soon as he's freed from his restraints.
  • Workaholic: We never see him do anything that isn't related to training to be a hero, heroics, or trying to train others to become heroes.
  • World's Strongest Man: All Might had Super Strength and was the #1 ranked hero until his retirement. Throughout his career All Might remained undefeated, although he nearly lost his life when he fought All For One and sustained debilitating injuries. Nevertheless All Might's prowess was of another ilk. The insurmountable difference in the abilities of All Might and the second ranked hero Endeavor caused the latter to have a One Sided Rivalry with him.
  • You Never Asked: He justifies the fact that he hadn't told his protégé that he also used to be Quirkless this way, revealing it very casually. He also never told Midoriya that he once used support gear or that he doesn't walk around with 100 percent OFA on. He may have picked this up from his mentor as she had a similar habit of withholding information for no reason.
  • Your Days Are Numbered: Nighteye urged him to retire because his Foresight saw All Might dying a gruesome death sometime. And while there's some nuance to Nighteye's Foresight, it's never wrong before; as of current, All Might has between one to two years to live. But he and Midoriya are trying to change that fate.
  • Your Size May Vary: All Might's neck in his normal form ranges from normal, to noticeably long, to grotesquely long.

"The people, the heroes, even the villains, I stand to set fire in their hearts."
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