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Izuku Midoriya — Deku

Voiced by: Daiki Yamashita (Japanese), Akeno Watanabe (Japanese, Young), Justin Briner (English), Lara Woodhull (English, Young), Hector Mena (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, Quirkless (Formerly)

https://static.tvtropes.org/pmwiki/pub/images/midoriya.png
"I have to work harder than anyone else to make it! I'll never catch up otherwise...! I want to be like you...! Like you. The strongest hero."
Click here to see his first hero costume 
Click here to see Costume Gamma, his current hero costume 

"A smiling... dependable... cool hero... That's what I wanna be! That's why I'm giving it everything! For everyone!"

One of the few people on the planet unlucky enough to be born Quirkless, he was relentlessly bullied growing up because of his lack of a Quirk, especially by his former friend Katsuki Bakugo. One day, when walking home from school, he is attacked by a monster and saved by his idol, the highest-ranking hero All Might. This kicks off a chain of events where All Might sympathizes with his plight as a Quirkless hero lover and trains him to become stronger. Once Midoriya proves himself, All Might gives him his Quirk, "One For All", which allows Midoriya to access incredible strength, although his body is not yet suited to this overwhelming power. His name can also be pronounced "Deku", which is what his friends call him and what he eventually chooses as a hero name.

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    Tropes # to E 
  • AcCENT upon the Wrong SylLABle: In the English dub, the characters pronounce his first name as "i-ZU-ku" with an emphasis on the second syllable over the first and third. The Japanese pronunciation stresses the first syllable, coming out as "I-zuku". Furthermore, his last name is pronounced "mih-DOR-i-yuh" in the dub, as opposed to the original "MI-do-RI-ya."
  • Action Hero: A hero in training to one day take All Might's place.
  • Adorkable: Has this in spades:
    • Just look at that face. He's the kind of guy who becomes ecstatic after (not) talking to a girl for five seconds.
    • He immediately becomes flustered during his first internship when Gran Torino tells him that they're heading to Shibuya to get some live experience, worrying that his new Hero Costume isn't stylish enough for such a trendy part of Tokyo.
    • Just look at his attempts to be stealthy and covert:
      Midoriya: [crossing his arms] Gotta be covert!
      Midoriya: [in the dub] Fwwssh! Stealth mode!
      Todoroki: You're standing out even more, Midoriya.
    • After saving someone from being crushed by a steel girder, he proceeds to toss the girder aside and apologizes to the empty construction site for messing it up.
  • Aesop Amnesia: He has been told to not go overboard with his Quirk over and over. Despite this, Midoriya's standard move at the end of most arcs is to go overboard. In his defense, it's justified by the fact that he's often thrown into life-or-death situations where he has no choice but to go overboard.
  • Affectionate Nickname: Although Deku was originally a name Bakugo used to insult him, Uraraka begins using it as this, and later Midoriya makes it his hero name.
  • All of the Other Reindeer: His status as one of the few Quirkless people in his class led to him being shunned and bullied, mostly by Bakugo. After inheriting One For All, however, this is no longer the case, and he's actually one of the most popular students in his class for his warmhearted personality and many badass moments, being voted class representative to his shock. It gets subverted even more after the U.A. Sports Festival, as people on the street and subway both recognize him and commend him for his hard work while encouraging him to succeed.
  • All Your Powers Combined: It is later revealed that One For All has been stockpiling Quirks of previous users. The Quirks are then integrated into One For All's power source and remain dormant. In Midoriya's time, however, the core has become large enough to cause those Quirks to once more become functional and manifest within One For All's current user. What's more is all those extra Quirks are being augmented by One For All, making them several times stronger than before. However, Midoriya still needs to master One For All to naturally control those Quirks.
  • Alternate Character Reading: His hero name (and former nickname) "Deku" is an alternate reading of his first name "Izuku."
  • Always Someone Better:
    • Despite gaining One For All, the strongest Quirk in the series, Bakugo still beats him in a straight up fight twice, even if Midoriya is holding back due to not actually wanting to hurt him.
    • Along with everyone else in his class, he gets curb-stomped by Mirio. Notable since both Bakugo and Todoroki were not fighting him due to being on House Arrest and not having his license respectively, making Midoriya the strongest present fighter. Justified since Mirio was intended to be the true inheritor of One For All, if flashback dialogue between All Might, Sir Nighteye, and Nezu were an indication.
    • This gets expanded upon in the aftermath of the Internship Arc. Midoriya feels like an inferior choice to wield One For All and becoming the next Symbol of Peace when compared to Mirio. Mirio mastered his extremely difficult Quirk after years of hard work, his upbeat attitude fits perfectly with what All Might feels a Hero should, and the fact that some people who know the truth of One For All, like Nighteye, feel Midoriya is a unfit person to wield One For All. In the end of the arc it gets worse, as Midoriya's victory against Overhaul came not from his own skill alone (as he needed Eri to help undo the destructive side-effects of One For All at 100% power), while Mirio was winning against Overhaul easily (albeit due to how Mirio's Quirk countered Overhaul's own by preventing Mirio from getting touched, while Midoriya had no such protection) before he lost his Quirk. This is why he offers Mirio One For All, but Mirio shoots him down.
  • Ambiguous Disorder: Midoriya shows signs of "impostor syndrome", a condition where someone can't internalize or acknowledge their own achievements, chocking them up to outside help or pure luck instead of skill. He shows no sign of seeing himself as heroic despite his many heroic deeds and earning the respect of many heroes and students he respects. While some of this could be due to Midoriya's own timidity and modesty, it may also stem back to his insecurities in regards to getting his Quirk and if he feels he is good enough to wield it and bear the responsibility that comes with it.
  • Angst Coma: Combined with injuries from his fight with Muscular. Midoriya was in and out of consciousness for nearly three days after Bakugo was kidnapped.
  • Animal Motifs: His costume's ears, his kick-based fighting style, his movement style in Full Cowl, and his Adorkable tendencies contribute to the image of a rabbit.
  • Appropriated Appellation: "Deku" was originally meant to insult Midoriya, since it can be read to mean "weakling." Thanks to Uraraka, who told him that it can also be read as "never giving up", he ends up using it as his hero name.
  • Art Shift: In peaceful situations, Midoriya's features are usually drawn rounder and cuter. When it's time for action, his face becomes more detailed, sharper, and angular.
  • Ascended Fanboy: Deconstruction. Midoriya becomes the successor of his favorite hero. It works against him almost constantly; his admiration for All Might has skewed his expectations of both his hero and One For All, and when he's made to spar against All Might, he can't bring himself to fight since he sees All Might as utterly invincible in a straight battle, causing him to try to run away even though he has no hope against All Might's raw speed.
  • Audience Surrogate: As he becomes more and more used to the world of Quirks, so does the audience.
  • Awesome, but Impractical: One For All, initially. It allowed him to achieve some spectacular feats of strength, but at the cost of broken body parts. Part of the reason why was due to Midoriya's belief that One For All was a trump card, which caused his body to think of it the same way and was thus unable to adjust its power.
  • Awesomeness by Analysis:
    • Midoriya has been observing his surroundings and taking notes on all the Quirk users he encounters. He can easily predict Bakugo's fighting style, which he uses to his advantage more than once. Later on, he replicates Gran Torino's movement pattern, after observing it for a few matches.
    • In Chapter 175, Midoriya manages to deduce Gentle's identity when he was disguised as well as his intentions in mere seconds, just by recognizing the latter's voice in his videos.
    • In his fight against Gentle, after getting a handle on Gentle's power to make things elastic, Midoriya is able to precisely determine the locations of Gentle's air trampolines, which are effectively invisible, by observing Gentle's movements, even using them to his own advantage or outright turning them against Gentle on multiple occasions throughout the fight.
  • Bad Powers, Good People:
    • His new Quirk Blackwhip is sinister looking and tends to rampage around thanks to being turbocharged by One For All.
    • Bakugo notes that One For All is really no different from All For One, and thinking of it in any other way would just be sugarcoating it. Midoriya spends a while contemplating this until he comes to the conclusion that he's just going to have to fight to make something that's supposed to be evil into something good.
  • Badass Adorable: Despite being a young boy who is constantly terrified, and who is rendered utterly speechless in the presence of a girl he likes, he's more than willing to put his life on the line to help others and his Quirk makes him insanely powerful.
  • Badass and Child Duo:
    • Becomes this with a 10 year old boy, Kota Izumi. During the attack of the League of Villains, Midoriya protects Kota while fighting Muscular.
    • Is again this with Eri while fighting Overhaul. Midoriya uses Eri's Quirk to rewind his injuries, temporarily negating One For All's drawbacks and effectively enabling him to use One For All: 100%. Midoriya straps Eri onto his back and uses Mirio's cape to secure the little girl. He proceeds to fight Overhaul.
  • Badass in Distress: He's at Shigaraki's mercy when the latter ambushes him in a shopping mall.
  • Bare-Fisted Monk: His go to fighting style where he mostly relies on using hand to hand combat but uses his fists most of the time. Later on he then grows to using more of a kick based style so he can refrain from damaging his arms.
  • Battlecry: SMAAAAAASHHHHH!!!!!
  • Berserk Button:
    • People he respects and/or views as being more skilled than him holding back for arbitrary reasons, or giving up instead of accepting help, is a recurring one for him. When he saw that Todoroki was purposely not using his Flame side during their fight, even though he was shivering from the cold and starting to lose the fight because of it, he began to get aggressive and even a bit angry, since it made it seem like Todoroki was trivializing everyone else who had to give their all to make it to the finals, while Todoroki coasted to it while being able to hold back.
    • The latter ties into his respect for people, such as when Bakugo was willing to not even work with him against All Might during the final exams, since it meant Bakugo was willing to throw away his pride out of spite. Basically, he really hates it when people he respects don't use their strength to their fullest or throw it away, especially since he himself was Quirkless once.
    • He does not like it when his knowledge and expertise on a hero's given Quirk is invalidated. He gives a particularly wild-eyed look when Iida uses a previously unrevealed ability to give his team an advantage in the Cavalry Game.
    • A great way to make Midoriya go overboard with One For All is to attack someone who can't defend themselves. His first use of its full power was against the zero-point robot that was about to crush a pinned Uraraka. He then went beyond the limits of 100% in order to defeat Muscular, who was about to murder Kota, a young boy Midoriya had sworn to protect. After that, he was spurred to use One For All: Full Cowl at 100% of its power with Eri's help after learning about how Overhaul had abused the girl.
  • Berserker Tears: During his fight with Muscular when he tries to stop the villain from killing Kota and cries out in a fit of frustration while trying to push him back.
  • Beware the Nice Ones: He's sweet and awkward to the point of being downright adorable, and is a huge fanboy for all of the world's heroes. His dream is to simply be the best hero he can be and help others with a smile. He's also armed with the Quirk of the world's greatest hero, and will kick your ass if you deserve it.
  • Beyond the Impossible:
    • Midoriya's specialty is making his insane plans work. Most prominent is the fact that he bends the otherwise impossible to turn predictions of Sir Nighteye, something the hero stated to be impossible and that his visions were final. He predicted that Eri would not be saved while he himself and Midoriya would die fighting Chisaki. Midoriya manages to combine his own power with Eri's and comes out unscratched of K.O.-ing Chisaki's One-Winged Angel while Sir Nighteye is being taken to the hospital, with Eri safe in their hands.
    • Midoriya used to be Quirkless. Now he has six different Quirks besides One For All.
  • Big Brother Instinct: Feels this need towards both Kota and Eri, being especially protective of both of them and immediately trying to help them overcome their issues and past trauma from the moment he meets them.
  • Big Damn Heroes:
    • In Chapter 51, Midoriya punches Stain right in the face, just in time to save Iida from being stabbed to death.
    • In the Provisional Hero License Exam Arc, he saves Shindou from Todoroki's flames by jumping and grabbing him before the flames could reach him.
    • In Chapter 153, he busts in to help Mirio fight Overhaul at just the right moment, as Mirio had just been depowered and Overhaul was just about to use his Quirk on him.
  • Blow You Away:
    • One of the powers of One For All is the ability to hit the air with enough force to direct it as a powerful gust of wind. Midoriya first used it with Delaware Smash to cause a rapid reaction in water when the villains attack, but this still breaks his fingers. All Might actually notes this and says he wasn't going to start training Midoriya to use this until he got the hang of 15% of this power.
    • Mei later presents Midoriya with some special gloves that will allow him to more efficiently create powerful air blasts with One For All while limiting the damage done. Midoriya was still fully able to use his hands while breaking them in and the audience first sees them in action when he fights Gentle Criminal.
  • Body Horror:
    • Using 100% of One For All's power shatters the bones in Midoriya's limbs and causes massive internal bleeding in the body part he uses. The anime takes the bone breaking Up to Eleven. The first time he does it, his limbs flop around like empty gloves afterwards, as if his bones have shattered to splinters.
    • When One For All goes berserk and starts shooting tentacles everywhere, his arm flails in completely unnatural directions as if he has no elbow. It's looks like the arm is trying its hardest to escape his body. It's revealed that said tentacles are part of another Quirk, but it being amplified up the wazoo by One For All and driven by emotion.
  • Boring, but Practical: One For All: Full Cowl doesn't have the explosive power of a 100% Smash, and only makes him slightly superhuman, but it gives him a dose of its power without destroying his limbs. Also, as he improves throughout the series, he's able to tap into more of its power, going from 5%, to 8%, to currently 20% of its power.
  • Born Unlucky: Literally. 80% of humans in the setting are born with a Quirk. He's one of the unlucky 20% who aren't.
  • Broke Your Arm Punching Out Cthulhu: A deconstruction of his Determinator mindset. As a result of overusing One For All, his hand has become permanently disfigured. Worse still, the doctors say that both of his arms will be rendered completely useless if he keeps using his Quirk in this way, basically leaving him a cripple and cutting his dreams short even after he's survived yet another life-or-death situation. It's implied that his ligaments will heal fully in time if he doesn't exert them nearly as much, but that doesn't diminish the incentive to avoid breaking them again.
  • Bully and Wimp Pairing: His "friendship" with Bakugo in a nutshell. Bakugo is, to put it lightly, a gigantic asshole, but Midoriya puts up with him, even using an Affectionate Nickname for him.
  • Busman's Holiday: Midoriya frequently runs into villains on days that are either supposed to be fun and relaxing or at least harmless training exercises, the first of these being the attack at USJ. He's later held hostage at the mall by Shigaraki, attacked by villains at the training camp, and encounters Gentle and La Brava while running to get supplies for the U.A. Cultural Festival.
  • Butt-Monkey:
    • A large portion of the manga's Slapstick is aimed squarely at him. Whether it's getting caught in sudden, random explosions, getting hit with an unprovoked Groin Attack, or repeatedly slamming into a wall while trying to get the hang of One For All, the poor kid has it rough even when he isn't fighting villains. In Smash!!, Bakugo is also prone to hurting him for comical effect, going so far as to put him in a full body cast in the second OVA.
    • He isn't even exempt in the outro endings. In the second ending of Season 2, the Fantasy AU story opens with Midoriya stepping out the door and waving goodbye to his mom. A few seconds later, his foot hits a rock in the road and he falls flat on his face, spilling everything that was in his bag.
  • Calling Your Attacks: He picks it up from All Might, right down to some of his moves ending with "smash".
  • Cannot Talk to Women: Downplayed; he'd hardly talked to girls before making friends with Uraraka, so he was awkward when interacting with her at first. Later on, he becomes more confident and can talk to other women just fine for as long as he's not in a compromising position. But he's left sputtering after Mei lands on top of him after an explosion, placing her boobs right in front of his face. He's also mortified when she starts feeling him up to take his measurements.
  • Cannot Tell a Joke: Midoriya lacks a good sense of humor beyond making absurdly detailed All Might facial impressions. He's just too darn timid to compose himself to be funny.
  • Cassandra Truth: Midoriya tells All Might 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 changes his mind and 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.
  • Cast from Hit Points: He learns One For All the hard way, by releasing explosive blasts through his limbs; the physical backlash is like setting off firecrackers in his arms. This is carried out to its logical conclusion repeatedly, considering that his self-destructive powers limit his capacity for heroics in the long term.
  • Casting a Shadow: In Chapter 210, he prepares to fire off a Delaware Smash at Monoma... only for tendrils of dark energy to shoot out of his arm instead. Dark energy that eerily resembles the dark energy used by All For One. Even worse, he can't control it and it's causing him an extreme amount of agony. However, it's later revealed that they belong to a previous user, the Quirk being Blackwhip.
  • Catchphrase: Doesn't nearly say it as much as All Might says "I AM HERE!", but in the English dub, Midoriya tends to say "Holy whoa!" when shocked or surprised.
  • Centipede's Dilemma: While learning under Gran Torino, Midoriya comes to understand that much of his control issues with One For All stem from his thinking of it like a special power, something to unleash only as needed, when even the most unusual of Quirks are ultimately just another bodily function. From then on, he takes to the idea that he has to get used to using One For All as naturally as he breathes.
  • Character Development:
    • He has a very quick development. Starting as a timid wimp in Chapter 1, he develops a muscular build in Chapter 2 and stops being concerned about Bakugo's bullying between Chapters 4 and 5. The list goes on. The story as a whole can essentially serve as a Coming-of-Age Story for Midoriya. As he becomes increasingly courageous, he gets increasingly closer to the image of heroism All Might projected. Additionally, as he grows in confidence, he slowly grows from a scared and timid kid to assuming a unofficial position of leadership within his class. Aizawa comments in Chapter 106 that his presence along with Bakugo's affects their whole class whether they know it or not.
    • The Joint Training Arc shows that his relationship with Bakugo has improved that he no longer flinches when being verbally attacked by him and actually acts along as if it was friendly banter. He's also very confident in his role as a leader to him team and about being the main target of the enemy, unlike him quickly crumbling from the pressure when he became the target of the Cavalry Battle. This is even lampshaded by Mineta:
    Mineta: You never used to be so steadfast. You behaved more strangely before.
  • Character Tics:
    • Has a tendency to mumble when he's overthinking. As a Running Gag, it tends to creep people out who don't know him and haven't seen him do it before. Those who are familiar tend to shrug it off as an amusing eccentricity.
    • There's the nervous, quivery smile he cracks during a tense situation, trying to mimic All Might's near-perpetual smile so that he can encourage those around him and reassure himself of his willpower.
    • He can't tie a tie at all. The knot is always too big and the tail is bunched up too short.
    • He sweats profusely. His character profile notes his sweat glands never get a day off. It's so bad that he can somehow sweat inside his own brain when he gets intimidated by one of the people sharing his body.
  • Characterization Marches On: In his introduction, Midoriya was shown to be unable to talk with girls, even freezing up instead of being able to talk to Uraraka and curling up when faced with the inevitability of having to interact with her. This is likely due to few if any have any interest in him as a child. He does get accustomed to it and is able to interact with his female classmates amicably though he can still end up in a nervous position. His potential feelings toward Uraraka have also gone unaddressed for a long while due to various other events going on for the time being.
  • Cheerful Child: As a 4-year old, he was one hyperactive little bugger.
  • Chekhov's Gun: His notebooks in which he noted everything he had observed about heroes and various Quirks and people. It's thanks to this that he was able to read Bakugo like a book during their fight, and he lampshades this.
  • Cheshire Cat Grin: His first hero costume had a translucent mask with a pattern that invokes a wide, toothy smile like All Might's. After it was repaired, it was replaced with a metal mouth-guard designed to evoke a similar feeling.
  • Chronic Hero Syndrome: One of the main reasons the heroes are impressed by Midoriya is his will to help people, regardless of how powerful or powerless they are. This is later proven to be detrimental to his body and is cause for concern for the people who care for him. He even had to be restrained by Iida from acting on his heroic impulses when All For One just wiped out a squad of pro heroes in front of their eyes.
    • In chapter 193, even though Midoriya knows he is watching visions of the past, he instinctively reaches out to save the first user of One For All when All For One was forcing the stockpiling Quirk on him.
  • The Chosen One: Chosen by All Might to be the next bearer of One For All. Bakugo even mentions this by name once he realizes All Might and Midoriya's true relationship.
  • Clark Kent Outfit: It's not obvious but after his training with All Might, Midoriya is ripped, though it doesn't ever really show through his everyday clothes or his form-fitting hero costume. Clothing Damage from fighting and using One For All usually reminds readers that he is in fact buff. This is lampshaded by Mei while she's feeling him up:
    Mei: Yes, yes... you're built a lot stronger than you look.
  • Classical Anti-Hero: A talentless, shy boy without superpowers gets the chance to become a hero. He still isn't all that confident in himself, but it's improving. Despite his growth as a hero, the story calls into question if whether or not he can become someone who can be compared to All Might or if he truly is someone worthy of inheriting One For All in light of potentially more capable candidates. As the series progresses, the extent of his flaws are made even more apparent:
    • Midoriya doesn't put a whole lot of stock into his own abilities, but the Overhaul Arc gives a glimpse how far they run.
    • He still has deep seated insecurities about his own value as a person to the point he has a ingrained need for external validation.
    • He shows a selfish aspect of himself when confronting All Might on his status as One For All's successor and Mirio's potential as a candidate, to the point that he screams at All Might for keeping it a secret.
    • Despite his achievements and progress as a hero, Midoriya has to confront the possibility that All Might may have made a mistake in choosing him as a successor over Mirio. This hurts him even more so as he still idolized All Might and thus is denied the validation he sought.
    • The possibility was brought up by Sir Nighteye that he was chosen not out of inherent worthiness, but because he shared All Might's "madness". Namely, their willingness to sacrifice their lives for the sake of others.
  • Clothing Damage: Using One For All at full power, especially in normal civilian or gym clothes, tends to obliterate his sleeves or pantlegs from the Chunky Updraft before he even launches his attacks.
  • Color Motif: Green. Green hair, green eyes, green hero costume, green formal wear in the anniversary art, green vest in the fantasy AU, etc.
  • Combat Parkour: With Full Cowl and his analytic skills, he starts moving like Bakugo when he is fighting. This is lampshaded by his classmates.
  • Combat Tentacles: He can use a Quirk similar to one used by All For One that allows him to create black tendrils from his body. Unfortunately, he can't control it and activating it is extremely painful. When the ability activates for the first time, One For All seemed to be trying to kill him and everyone around him. It is known as Blackwhip, which had originally belonged to a former One For All user. Apparently, it is driven by emotion and due to One For All's amplification, Blackwhip is drastically stronger than before.
  • Combination Attack: When he discovers the true nature of Eri's Quirk, Midoriya synchronizes their Quirks, allowing him to temporarily access One For All: 100% without any repercussions. He proceeds to fight Overhaul.
  • Combo Platter Powers: He unwittingly gains a Quirk that can create dark tentacles and is rattled when it first manifests and goes berserk. It is confirmed that the Quirk originally belonged to a predecessor of One For All who briefly explains its mechanics to Midoriya. It is also revealed that there are five other Quirks that are going to awaken within Midoriya and all these new Quirks are being empowered by One For All.
  • The Comically Serious: When All Might asks him if he remembers the first time he was finally given All For One, he mentions being told to eat a hair, while mimicking the latter:
    All Might: Do you remember how I gave my power to you, what I said that day?
    Midoriya: (with All Might's face) EAT THIS!!
    All Might: N-No, not that part!
  • Cosmic Plaything: Anytime something goes right for him, don't expect it to last long. This reaches a breaking point when he's unable to stop his Combat Tentacles from attacking his friends. He breaks down crying because he remembered all his failures and how this is no different, not from the intense pain. He realizes just when he finally thought he was doing well to master One For All so he wouldn't worry his loved ones anymore, all his effort to control his powers amounted to nothing. He's snapped out of this by one of the users though.
  • Costume Evolution: As shown in the pictures, Midoriya's hero costume goes through a number of upgrades over the course of his career that reflect Midoriya himself. It starts out as a cheap, light green and white jumpsuit that broke apart under stress as easily as its wearer did while using One For All. It is later repaired with more rugged, darker material while the white stripes have been replaced with black and the clear face mask replaced with a metal one. He received this costume after he had gained a great deal of experience, with a "white belt to black belt" sort of motif, as well as when he began to master One For All: Full Cowl, which eliminated his constant need to harm himself except in the most dire of situations. His current costume, Version Gamma, is outfitted with additional protection as well as special leg armor designed to match his new fighting style and minimize the potential damage his Chronic Hero Syndrome has done to him in the past. He also used to wear the actual cowl of his costume when he was starting out, but has seldom worn it since the Hero vs. Villains exercise.
  • Covered in Scars: His arms are covered in scars because of the sheer amount of abuse he puts them through when using One For All.
  • Cowardly Lion: How he starts off. But even without a Quirk, he won't watch someone die if he can do something to try and stop it. This is what inspires All Might to make Midoriya his apprentice; All Might notes that Midoriya may be scared out of his mind, but acts in spite of his fear.
  • Curb-Stomp Battle: Gives one to a highly empowered Overhaul when Midoriya enters his Super Mode. Overhaul had no chance to land a blow on Midoriya. What makes it more awesome is that Midoriya was able to defeat Overhaul while considerably minimizing collateral damage. Overhaul also happens to be the most powerful villain ever introduced after All For One.
  • Curtains Match The Windows: Midoriya has green hair and green eyes.
  • Dark Is Not Evil: His black energy powers are terrifying, not to mention absurdly dangerous in the hands of someone who didn't have that particular bodily function until a few hours ago, but it's still Midoriya using them.
  • Deadly Upgrade: In the final battle against Chisaki, Midoriya discovers that Eri's Quirk is to "rewind" the state of anyone she touches. As a result, she was able to rewind Midoriya's broken legs back to their original state after he accidentally used One For All 100%. However, she doesn't know how to stop her Quirk, thus it will eventually erase Midoriya from existence like it did her father. However, Midoriya realizes that if he keeps breaking his limbs with One For All 100%, Eri's Quirk will rewind those first. Thus he has technically gained unlimited use of One For All 100%, albeit he has to keep using it to keep himself from being rewound out of existence.
  • Death Glare: Capable of dealing them out every now and then when he gets serious. When he finds out the true extent of Overhaul's crimes, the expression of pure fury on Midoriya's face is enough to give even Bakugo a serious run for his money. It takes on a new level when Midoriya uses One For All: 100%.
  • Dented Iron: Just from his first year at U.A. alone, the damage that Midoriya has done to his body in the process of learning how to properly control One For All has left him with permanent scars. Most prominently, his right hand has been a mess since he wrecked it during his match with Todoroki in the Sports Festival.
  • Determinator:
    • Despite not having a Quirk, he never gave up on his dream of becoming a hero. His dream temporarily shatters when his idol All Might tells him to give up, until the latter comes back and asks Midoriya to become his successor, since Midoriya was the only person brave enough to try to save Bakugo from the Sludge Villain. Since then, Midoriya works very hard without giving up to accomplish his goal.
    • Before he learned to use One For All effectively, this was regularly shown in Midoriya willingly breaking his bones multiple times for the sake of using its power for the good of others — usually fingers, sometimes arms. These are broken bones, people, not pulled muscles. It takes some gusto to swing at the enemy knowing you're going to directly invoke some serious pain in doing so.
    • Deconstructed during his attempts to get through to Todoroki, as it resulted in his hand being permanently disfigured after using One For All with a broken hand. Later, it's revealed that he has only 2 or 3 more 100% bone-breaking attacks left in him. His arms run the very real risk of becoming permanently paralyzed if he tries to use full power punches as he is now.
  • Difficult, but Awesome: One For All is this for him. While he started off breaking his limbs just to use it, once he masters it, he'll be the World's Strongest Man. Also, he'll be able to wield the turbocharged Quirks of his predecessors to their max potential once he masters One For All.
  • Ditto Fighter: He is capable of this, with enough research, incorporating and adapting other's styles and techniques to his own fighting style. So far, he has done it to Bakugo, Gran Torino, Iida, and Ashido.
  • The Dog Bites Back: He refuses to take any more crap from Bakugo after being tormented by him since preschool. This is shown when he stood up to him when Bakugo confronted him about going to U.A., fought him during the Heroes vs. Villains exercise, and gave him a "The Reason You Suck" Speech after he punched him the face during the Final Exams Arc:
    Midoriya: "I'm not gonna be your worthless punching bag Deku forever... Kaachan. I'm... I'm the Deku who always does his best!"
  • Doom Magnet: It's almost a Black Comedy Running Gag how often Midoriya runs into extremely dangerous villains in public places at times when he's just a civilian. Being only a hero-in-training, these experiences are quite scary for him.
  • Dork Knight: He has one of the strongest Quirks in the world, has some of the best grades in his class, and is incredibly brave and selfless when others' lives are on the line. He's also a completely Adorkable hero fanboy who will gush at the sight of nearly any Pro Hero in an instant and is a total Socially Awkward Hero who instantly gets flustered at the thought of anything romantic involving the opposite sex.
  • Double Standard: Abuse, Female on Male: Averted, the rapist and stalker undertones of Toga's behavior towards Midoriya, such as throwing herself naked on him as Camie show Midoriya's clear discomfort and he's definitely frightened of her. It's also never played for laughs, but for horror.
  • Dream-Crushing Handicap: Was born Quirkless and was constantly told that he would never be able to become a hero. Luckily, this doesn't last thanks to All Might's decision to give him One For All.
  • Dreaming of Times Gone By: Takes place in Chapter 192. Midoriya has a vivid dream where he sees Nana Shimura and the other previous users of One For All standing next to him. He then witnesses the fateful meeting between All For One and his little brother, the first user of One For All.
  • Dub Name Change: Not him, but One For All: Full Cowl, which was renamed in the English version to One For All: Full Cowling.
  • Emotional Bruiser: Even after gaining Super Strength and punching out robots the size of skyscrapers, he can't help himself when he feels the need for a good cry.
  • Empowered Badass Normal: Much like his mentor All Might, Midoriya was a member of the 20% minority of people in the world without a Quirk, essentially making him a regular, powerless human being by the time the story begins. After receiving One For All, he gains the ability to stockpile power, granting him Super Strength unrivaled by any other Quirk user. Add his quick thinking and his genuine desire to do good and "badass" covers it quite nicely.
  • Enhanced Punch: How he starts out using One For All. Usually breaking his entire arm in the process.
  • Establishing Character Moment: His first on-page appearance as a child shows him defending another young boy from Bakugo and a pair of other bullies, despite being Quirkless, outnumbered, hopelessly outmatched, and absolutely terrified. Later in the same episode, he tries saves Bakugo, his bully, while using the info he wrote in his notebooks.
  • Eureka Moment: While the rest of his class underwent training to strengthen their Quirks and develop new techniques, All Might tells him he's still trying too hard to be like him. After seeing Mei work on her inventions and her constantly thinking outside the box, it finally hit him: that indeed he was trying too hard to emulate All Might and that he needed to come up with his own workarounds for One For All. So he has his hero costume redone so that it'd lessen the impact of his strikes and likewise begins focusing Full Cowl to his kicks.
  • Exact Words: At the end of the Joint Training Arc, when Aizawa request an explanation for the emergence of the Black Whips, Izuku knows he can't give a truthful explanation that doesn't reveal the secret of One For All. Instead, he says the only technically true thing he can get away with: he doesn't understand how it happened either.

    Tropes F to J 
  • Famed In-Story: After the U.A. Sports Festival, he became well-known to everyone who watched it. Gentle and La Brava utter an Oh, Crap! when they realize that the boy coming after them is the insane kid who shattered his own bones on TV and destroyed the entire ring.
  • Fan Boy: Of All Might and heroes in general, a fact that is lampshaded repeatedly by his classmates, who outright call him an Otaku for his obsession. For instance, his reaction to learning that All Might used support items in the past:
    Midoriya: [websurfing on his phone with a manic look in his eyes] All Might wearing support items... All Might wearing support items. For me to not know such a "Rare-Might" is a failure, utter failure. What were they? Picture... not available... is there not a video of it?!
    Uraraka: [looks on and screams in horror] AHHHH!
  • Fantastic Racism: Played for Drama. Due to living as the only person without a Quirk in an environment full of Quirk-users, he's been bullied constantly for his lack of power and treated as a minority. It's however, subverted later on as he gain One For All.
  • Fatal Flaw: Midoriya's Chronic Hero Syndrome and his fixation with trying to emulate All Might in every way ultimately does more harm to his body than good. His right arm ends up badly scarred and it reached the point where his hands become permanently disfigured. And the doctors tell him that if he took any more significant damage using One For All, he could potentially lose the functionality of his arms altogether. His mother's concern, a pep talk from All Might, and his inability to rescue Bakugo because of how he crippled himself from an earlier fight finally got Midoriya to reconsider how he uses his Quirk going forward.
  • Feels No Pain: Played with. The constant pains of breaking his own bones whenever his powers were used caused him to have a very high resistance to pain. It's not that he doesn't feel it anymore, rather, he got used to the feeling of pain and it usually doesn't hinder him anymore.
  • Felony Misdemeanor: His unsanctioned fight with Bakugo is treated as something even worse than breaking countless laws during the Hideout Raid Arc, although he would have been expelled for the latter if not for All Might's Retirement. This is partly justified, as Aizawa explains that this is because, to him, it "proves" that Midoriya has a bad habit of breaking protocol and causing unnecessary risks, which is a massive red flag in the pro hero business.
  • Fights Like a Normal:
    • For a while during his fight against Bakugo, since using his power would cripple him and kill Bakugo due to his lack of control.
    • During the first round of the U.A. Sports Festival, he took first place without using his One For All.
    • For the most part, this is phased out after he manages to utilize Full Cowl, allowing him to utilize his Quirk at a lower power level to boost all of his physical abilities without the risk of harm.
  • Finger Poke of Doom: Delaware Smash involves Midoriya compressing One For All's power into a single finger that he proceeds to flick at the air. While it breaks his finger, it also releases a massive rush of wind and concussive force that can generate whirlpools when aimed at water and blast Todoroki's ice back at him. Midoriya eventually develops a more manageable version, Delaware Smash Air Force, that uses only 20% of One For All's power to launch a cannonball of air at someone with the help of new gloves designed by Mei.
  • Flash Step: He did this once in order to try to save All Might from Shigaraki, although he broke both his legs in the process.
  • Foregone Conclusion: We know that he becomes the world's greatest hero since his future self is the one who's narrating the story. The story itself is about how he got there. This also gives him a certain level of Plot Armor above the usual protagonist hijinks, since we know that he is going to be the world's greatest hero, so any setbacks are going to be temporary or overcome such as being threatened with expulsion for his maverick behavior after Bakugo was kidnapped.
  • Foreshadowing: After his dream about One For All, he wakes up to see dark lines on his hand. While this does look similar to his familiar Full Cowl visuals, the lines are darker, thicker, and more solid than Horikoshi usually draws them. This is because it's actually his black tendril ability activating below the surface of his skin.
  • Freeze-Frame Bonus: It's revealed in a shot of his U.A. files that his Quirk is written as "Super-Strength" in his official files, rather than "One For All", which is likely due to trying to keep his Quirk and the relation to All Might a secret.
  • A Friend in Need: He tried to be there for Iida after the news that Tensei barely survived facing off Stain. And he didn't hesitate going against Gran Torino's orders to fight off Stain trying to save him. This landed him in trouble with the law for using his Quirk without permission.
  • Friend to All Children: In every instance, he ultimately befriends the children he interacts with. Whether it is to offer some encouraging words, protecting them from harm and making sure that they are taken care of even after everything is said and done.
  • Generation Xerox: He's a former Quirkless wielder of One For All who aims to be the world's greatest hero. All Might reveals to Midoriya that he was also a Quirkless wielder of One For All who became the world's greatest hero.
  • Genius Bruiser: Midoriya has managed to come through some tough spots through pure ingenuity, for example when using explosives and scrap metal to propel himself across a minefield surpassing stronger Quirk users; he has developed creative ways to use One For All, eventually developing his own techniques based on positional awareness and high mobility more than sheer brute force. He's also constantly analyzing and learning from other students and heroes, even in situations of considerable stress, allowing himself to create strategies to counteract them and copy their techniques for full effect, like adapting Bakugo use of his Quirk to move faster while using One for All: Full Cowl.
  • Glass Cannon: One For All 100% has insane power, but Midoriya can't use it or else he'll break the body part he uses it on. He could be seen as this to the logical extreme: in reality, a glass cannon would be destroyed after one shot. He exploits this fact when Overhaul tells him about Eri's Quirk, which can also rewind injuries. By constantly breaking his body, Midoriya can effectively use One For All at its maximum power. He proceeds to crush Overhaul, defeating him for good.
  • Glowing Eyes: In the anime, the irises of Midoriya's eyes glow a neon green while using One for All: Full Cowl in contrast to their normal dark green coloration.
  • Godzilla Threshold: During the final battle against Overhaul, seeing that Aizawa has been captured, Mirio has lost his Quirk and is protecting Eri, and that Nighteye has been mortally wounded, Midoriya is forced to use Full Cowl at 20% when his previous limit was a mere 8%, to try and stop Overhaul. He outright states his body is in intense pain already, but given the circumstances, he had no choice. A few chapters later, he is forced to go 100% to defeat a now even more dangerous Overhaul, though in this case Eri is around to counter the damage he might inflict on himself. Later, the threshold gets set up then crossed in one chapter. After he decides One For All is too dangerous to use against Shinso and fighting Quirkless is his only option, Shinso nearly crushing him with debris at the end of the chapter forces him to pull out Blackwhip to defend himself.
  • Good Counterpart: Once he masters One For All, he'll be this to All For One (even moreso than previous One For All users, since he's the first to be able to use all the Quirks stored inside One For All, as opposed to all his predecessors only being able to use the Super Strength aspect).
  • Good Old Fisticuffs: How Midoriya fights during the first part of the series. This reflects his naivete and inexperience, as he's more or less just copying All Might while having no clue how to use his power. He switches into the self-propelling Shoot Style after deciding to mix it up, but as he demonstrated against Bakugo, he can and will still throw a good slug in. Later, he also improved his ranged abilities to the point where he's one of the most dangerous of Class 1-A's ranged attackers because he can snipe with his air blasts using Mei's gauntlets.
  • Goomba Stomp: How Midoriya switches up his fighting style after deciding to stop totally emulating All Might, Shoot Style. It isn't straight proper kicks, that's Iida's department; he uses his method of launching himself in Full Cowl to get around, carrying the momentum through his legs to strike at maximum power while rocketing his body like a ballistic.
  • Greater Need Than Mine: Self-sacrifice is a defining aspect of his character, to the point of destroying his body repeatedly for the sake of someone else. He even goes as far as offering to give Mirio, who lost his Quirk, One For All essentially offering to give up everything he fought and earned as a hero because he believed Mirio was the better candidate and by extension save more people.
  • Grew a Spine: A defining part of his development is getting over his doubts and fears. In the beginning of the story, he's terrified of meeting villains and confronting Bakugo, his tormentor. Later on, he's breaking his own limbs without hesitation to use One For All and doesn't even think twice about rushing in to fight Hero Killer Stain.
  • Grin of Audacity:
    • Sports one in Chapter 24 when facing the villain bots.
    • Does it again in Chapter 52 fighting against Stain.
    • From the Season 2 anime opening, there's a split-second look at future Midoriya's face.
  • Hair Color Dissonance: He has black hair with green highlights.
  • Hairstyle Inertia: His messy hairstyle hasn't changed one bit since he was a young child. The only time it changes is when he taps in to his Quirks' full power. Similar to All Might it stands up, but instead of having bunny antennae, Midoriya's whole head spikes upward making him look like he has Vegeta's hairdo when it happens.
  • Hard Work Hardly Works: Played straight at first, as even All Might told Midoriya that it was simply impossible for him to reasonably be a hero without a Quirk no matter how hard he was willing to work. After entering U.A., he flips this on his head, working harder than nearly anyone else in his class in order to catch up to those who have had their Quirks all their lives, becoming one of the best fighters in class next to Bakugo and Todoroki. It's also reflected in his grades, which are fourth best in his class due to his obsessive note-taking and studiousness, though he still falls behind the even more studious and uptight Iida and the resident geniuses, who also study hard, Yaoyorozu and Bakugo.
  • Heal the Cutie: Midoriya, as a Cheerful Child, was an ecstatic fanboy of All Might but was brokenhearted to find that he would probably never get a quirk, dashing his dreams of becoming a hero. He is regularly mocked and bullied in his class for not having one, and when he meets his idol, he is told again that he should give up. When he acts to rescue his former bully, he is chastised by the public for rushing in without a Quirk and gives up on his dream. However, All Might, moved by his selflessness, decides to choose him as the next vessel for his quirk, and Midoriya's journey to finally realizing his dream begins.
  • Helmets Are Hardly Heroic: Well, hoods anyway. Midoriya wore the full face covering hood and mask during the class' very first training exercise, but the costume got wrecked. With version 2.0 of his costume, the professionals modified the hood, but he has only ever worn the thing once to hide his appearance from someone dangerous. Normally, it just hangs down his back, conveniently looking like a miniature cape.
  • The Hero: He's the protagonist of the series and as the bearer of One For All, he's destined to be a game changer in the hero community.
  • Hero Does Public Service: He begins his training as All Might's protégé by cleaning up a beach filled with trash by himself over the course of several months.
  • Hero-Worshipper:
    • All Might has shaped all Midoriya's beliefs in what a hero should be. In fact, it's commented that All Might is pretty much like a god for him. He knows everything about All Might, from his measurements to his favorite tree:
      Midoriya: If… if that’s the case leave it to me! If it’s about All Might, I know everything from his measurements to even his favorite tree!
    • To a lesser extent, he also has this towards Bakugo. No matter how much of an enormous Jerkass the latter is, Midoriya can't help but admire his immense power and confidence. During a field exercise, Midoriya outright tells his rival that he doesn't want to beat him as an act of revenge for his bullying, but because he thinks Bakugo is amazing and he wants to reach that level as well.
    • These tendencies backfire when he realizes that he's been trying too hard to emulate All Might instead of finding a fighting style that works for him. This leads him to develop Shoot Style, which is designed to improve his mobility and reduce the strain on his damaged arms by focusing on utilizing his legs.
  • Heroes Fight Barehanded: Goes into combat with nothing but his fists and his wits, until he decides to place more offensive focus on kicks. This is subverted once he gets a true projectile weapon in Blackwhip.
  • Heroes' Frontier Step: The Quirkless Midoriya charging out to save Bakugo while the professional heroes stood by is what convinced All Might to make him his successor, setting him down the path to become a true hero.
  • Heroes Prefer Swords: In the Fantasy AU depicted in second ending of the second season, Midoriya carries an undecorated sword that he seems to be able to charge with All Might's power.
  • Heroic Bastard: He isn't one, but Todoroki asks him if he's All Might's bastard when he notices Midoriya's Quirk is surprisingly similar.
  • Heroic BSoD:
    • When All Might tells him that he doesn't believe a Quirkless person can become a hero, Midoriya is so devastated that he just stares blankly at the ground in front of him for several minutes while All Might walks away. When he finally works up the nerve to get up and leave, he's ready to finally give up on his dream, even if he followed the devastation to the sludge villain attack without thinking.
    • Left in this state after Bakugo gets captured.
    • He has another one when he's felt guilty about Nighteye's death, thinking that Mirio would have been a better successor than him. He even offered Mirio One For All. It took Aoyama giving him a pep talk to pull him out of it.
  • Heroic Build: Necessary to become All Might's successor. Not as blatant as other examples though, being that he just resembles a very athletic teenager rather than a hulked out bodybuilder.
  • Heroic RRoD:
    • Midoriya is still getting used to the One For All despite having strengthened his body for it, due to unfamiliarity. Whenever he uses any big moves, the bones in that limb shatter, crippling him for the duration of the fight. It starts to come easier to him over time as long as he doesn't use more power than his body can handle.
    • Blackwhip causes him so much physical pain that it's somewhat impractical for him to use, not to mention that it can go out of control and hurt him even more if he doesn't stay calm. His theory is that the pain is because his body hasn't adapted to it at all.
  • Heroic Self-Deprecation: Midoriya has this bad, to the point it qualifies as an imposter syndrome-type Ambiguous Disorder. Despite being the one person in the world who actually earned his Quirk through his own selflessness and hard work, rather than just being born with it, he's deeply insecure and seems almost fundamentally incapable of recognizing he's proven himself worthy to be All Might's successor many times over.
  • Hesitant Sacrifice: Narrowly averted. While trying to hold a You Shall Not Pass! against Muscular to give Kota an opportunity to escape, Midoriya finds himself sobbing and apologizing furiously to his mom and All Might for failing them as he's slowly pressed into the ground and is eventually overpowered. Left barely conscious, he watches Kota feebly uses his Quirk to get Muscular to stop, prompting the villain to say that he'll kill Kota soon enough. Midoriya, refusing to let Kota die, gets his Heroic Second Wind and uses the brief lapse in Muscular's concentration to push back, going beyond the limits of 100% to overpower Muscular with a 1,000,000% Delaware Detroit Smash.
  • Hidden Depths:
    • It slowly comes out over the course of the story that his timid personality isn't just him being shy, it's the result of years lamenting his own Quirklessness, abuse from his former best friend and classmates, his own weakness letting him be a doormat so long, and his mother being unable to properly emotionally support him through all of it damaged his personality. While his genuine kindness is part of his Chronic Hero Syndrome, a huge portion of it is a selfish need to be useful to someone. Healing this damage quickly becomes his number one obstacle to becoming a hero.
    • Deep down inside, Midoriya admires Bakugo as the image of victory.
  • Hidden Purpose Test: Midoriya assumes he fails the U.A. Entrance Exam after scoring zero points on the practical exam portion. However, All Might reveals to him in a video that there is actually an additional scoring system, which the teachers give points based on how much they help others out. He scores sixty points in this system, which is more than enough to pass, because the teachers were impressed with how he rushed in to save Uraraka without any regard to his own safety when he saw she her foot was pinned down by some debris, despite the robot he defeats being worth zero points. All Might tells Midoriya it'd be extremely hypocritical of them if they fail him after the heroism he shows off in the face of danger, something a bonafide hero has to deal with everyday on the job.
  • Hit Me, Dammit!: Pretty much tells Todoroki to do this so he can stop holding back his fire power just for the sake of spite against his father.
  • Honor Before Reason: In the U.A. Sports Festival Arc:
    • During his match against Shinso, once he broke free of the brainwashing, Midoriya insists on fighting him with straightforward martial arts instead of exploiting his Quirk to blast him out of the ring. However, this did serve a practical purpose since Midoriya didn't want to injure himself. His reasoning was to prove a point to Shinso, since the latter had resentment towards the kids with naturally combat-oriented Quirks, so he defeating Shinso with pure skill was to give some form of inspiration.
    • Calling out Todoroki on his stubbornness about using his fire side in combat would be a laudable thing were Midoriya not trying to do it during his tournament match against him. This is lampshaded by All Might, who points out that the tournament match wasn't the best time to bring that up. Midoriya is also painfully aware of this afterward, apologizing profusely for not being able to keep his mouth shut.
  • How Do I Shot Web?: Unlike his peers who have had their Quirks since they were toddlers, Midoriya received One For All only recently. So unlike them, he hasn't had years to figure out how to use his power and he doesn't have the benefit of being an Instant Expert like All Might, leading Midoriya to constantly injure himself in his first few months of schooling until he trains under Gran Torino. Even then, he's still learning how to moderate his power and has to actively maintain his concentration, lest he accidentally fire off 100% and break his limbs again.
    • It's even worse with his Combat Tentacles, all they've done so far is trash his room while he slept then tried to kill him and his friends. He has no idea how to turn it on and off or control them in any way. Later he meets a One For All predecessor who tells him to master his emotions before activating his power.
  • Humble Hero: He's never looking for praise or fame and honestly wants to be a hero to fight for what's right.
  • Hypocrite: Izuku has a troubling pattern of refusing to take the advice that he gives out to his friends though this could be tied in to his troubled past and his unique circumstances compared to everyone else, alongside underlying issues:
    • He advises Iida to go to his friends when he is hurting, but when he is hurting, he doesn't do the same, and Iida actually has to give the same advice he received to Midoriya.
    • Aoyama basically calls him out in Chapter 167, saying that Midoriya should ask for help when he needs, something that he never seems to do after the Field Training Arc, despite fighting Bakugo about the fact he never accepts help and that Midoriya is always helping people himself.
    • He spends the entire series determined to master One For All. Yet, he ends up offering it to Mirio after everything that happened, in part out of not feeling worthy (given how Mirio was nearly able to beat Overhaul while Midoriya needed some outside help, though namely because Mirio's Quirk is a Difficult, but Awesome power that was a natural counter to Overhaul's while being more experienced. Meanwhile, the outside help was twofold; namely in allowing the girl he was rescued to channel her out-of-control power without fear while also letting him fight at 100% without being impeded by the repercussions due to accelerated "healing." This is the point when All Might realizes Midoriya's personality problems run much deeper than a simple lack of confidence.
    • One could can make a drinking game out of how many times he tells himself he needs to find his own way and figure out how to use One For All in a way that works for him, but only makes small improvements and never really follows through with it. It takes going through the Trauma Conga Line of nearly getting killed by Muscular, permanently damaging his body, almost letting Tokoyami get kidnapped, actually letting Bakugo get kidnapped, being forced to watch helplessly as All Might fought All For One alone and lose his powers, and finally, his mother's decision to force him to leave U.A. that Midoriya actually follows through with it. Though some of this could be tied into how All Might confesses to not being a good teacher (heck, Izuku makes leaps and bounds thanks to Gran Torino and it's likely his new style was inspired by him and Tenya.)
    • Subverted however when it comes to recognizing One For All as his Quirk despite giving the exact same advice to Todoroki. Todoroki's case is his refusal to accept that part of himself like his dad, something that keeps from fully going out, especially since it's revealed that the mechanics between his Quirk and his father's are indeed much different and Todoroki is not impeded by Endeavor's weakness. Meanwhile, Midoriya was Quirkless until about a year ago and has to adopt a different mindset, especially since he still understands little about One For All and its power. Chapter 210 makes this go Up to Eleven as One For All is changing beyond even All Might's knowledge. Specifically: One For All has grown strong enough to awaken the latent Quirks of its predecessors, meaning Midoriya has six more Quirks to master on top of One For All, especially since said Quirks are now amplified by One For All itself. All on top of being able to communicate with the spirits of the predecessors. Needless to say, Midoriya has his plate full with his unique Quirk.
  • I Have This Friend...: When trying to connect with Kota, Midoriya explains his own Quirklessness this way:
    Kota: Shut up... You're all crazy... calling yourselves heroes and villains... killing each other like morons... bragging about your Quirks... that's why you end up like that... idiots...
    Midoriya: [internally] It isn't just heroes... Kota hates Quirks and superhuman society itself...
    Kota: What is it? If there's nothing else, then go away!
    Midoriya: [out loud] Well, um... my, uh... friend... My friend... couldn't inherit any Quirks from his parents...
    Kota: Huh?
    Midoriya: It's a hereditary thing, and apparently it's rare but it does happen... But he admired heroes and wanted to become one, but you can't be one these days without a Quirk. My friend couldn't accept that for a long time and practiced... trying to draw objects to him and breathe fire... But it was no good. There are a lot of different ways to think about Quirks, so I don't know if this will apply to everyone, but if you reject it that much, then it'll just become more painful for you. So... that's why...
    Kota: Just shut up, already! Get out of here!
    Midoriya: Sorry... I was rambling...
  • I Just Want to Be Special: He wishes to be a superhero like his idol All-might despite lacking a Quirk. He was desperately trying to believe that he could be a hero even without one and it took All Might saying no to his face for the reality to sink in. His actions of saving Bakugo made All Might realize his heroic spirit and named him his successor on the spot.
    • Also ties into I Just Want to Be Normal given how 80% of the population has a Quirk, making Midoriya abnormal in that sense.
  • Iconic Outfit: His red shoes shows up in pretty much all the chapter art with Midoriya regardless of the rest of his clothes, and they even got a vote during the first official popularity poll. Gets even better when the third version of his hero costume outfits them with a pile bunker-esque contraption.
  • Ideal Hero: He started out a Classical Anti-Hero, but he's starting to fit the bill well enough to be recognized as such by his classmates and All Might. Despite his inexperience, he is charismatic, determined, altruistic, kind-hearted, strong, intelligent and capable of inspiring other people, both civilians and heroes to do better. He's also the most altruistic among his classmates, being in it to save people with a smile like his Hero All Might.
  • Idiot Ball: Responding to Shinso during the U.A. Sports Festival despite knowing his Quirk. Everyone realizes how pointless this was. The only reason he wasn't completely screwed was because One For All turns the user into a Mind Hive, and the previous users decided to bail him out.
  • In a Single Bound: After mastering Full Cowl, he can now jump great distances with ease.
  • In-Series Nickname: Bakugo gave him the nickname Deku, an alternative reading of his first name Izuku. Deku can mean "weakling," but it can also roughly mean "never giving up." Midoriya sticks with the latter variant when he hears this from Uraraka.
  • Inadequate Inheritor: Sir Nighteye, and by some extension himself, believes that he isn't worthy of inheriting One For All, and sees him as a Sketchy Successor for the position of "Symbol of Peace."
  • Inelegant Blubbering: He cried a river when his team was announced fourth in the U.A. Sports Festival.
  • Irony: Despite being a Socially Awkward Hero, he is among the most charismatic heroes in training in the manga, and most of his classmates accept him as somewhat the unofficial leader of Class 1-A. He was actually voted as the original Class Representative.
    • Midoriya used to be Quirkless, but now he has seven Quirks.

    Tropes K to O 
  • Karmic Jackpot: Midoriya is bestowed One For All after years of torment for chasing his dream despite being Quirkless, giving him the chance to become a hero. Unfortunately, his new power has some serious drawbacks and he's frequently hit with No Good Deed Goes Unpunished. Played straight on a whole new level when he is told that he has six other Quirks that were stored within One For All and that he is the first user who can wield them all.
  • Kitsch Collection: Midoriya is the proud owner of several All Might figurines, posters and merchandise he collected over the years. He continues to fanboy over All Might even after the latter transferred his power to him and mentors him.
  • The Klutz: Downplayed. Most of Midoriya's clumsiness can be chocked up to nervousness, lack of practice, or his usual Butt-Monkey tendencies. He still manages to trip over his own feet on the way to the entrance exam, slips and faceplants during the rescue exercise while showing off One For All: Full Cowl, and initially struggles to keep up with the dance routine Class 1-A planned for the U.A. Cultural Festival. In the second ending of the second season, the scene opens with Midoriya stepping out the door and waving goodbye to his mom, only to immediately hit a rock in the road and fall flat on his face while spilling everything in his bag.
  • The Knights Who Say "Squee!": Even becoming a U.A. student doesn't stop him from squeeing over every cool pro hero he meets and rattling off their life stories from memory.
  • Last-Name Basis: He's almost exclusively referred to by his surname by everyone except for his mom, Bakugo, and Uraraka, the latter two referring to him as "Deku" derisively and affectionately, respectively. This very page is littered with many more mentions of "Midoriya" than "Izuku" as if to emphasize this. Toga also calls him Izuku, but he is less than happy to hear this.
  • The Last of These Is Not Like the Others: He's the only user of One For All to actually be able to interact with the deceased wielders of the Quirk. He can even see the memories of previous users from a third person point of view. It is revealed that Midoriya will manifest multiple Quirks which belonged to his predecessors, without the risk of Quirk overload.
  • Le Parkour: Moves like this once he masters One For All: Full Cowl, bouncing off walls, flipping through the air, and leaping huge distances in a single bound.
  • The Leader: In any situation where he ends up working with his classmates, Midoriya almost always takes the lead. What's remarkable is that he seems to bring traits from all four types to the table. Like the Mastermind, he's adept at analyzing the situation, his opponents, and his allies and formulating plans to allow his teammates to use their abilities to the fullest. He also has aspects of the Levelheaded, being able to keep his cool and avoid panicking, even during the most dire circumstances. But he also has aspects of the Headstrong type, particularly when it comes to using his own Quirk, as he's completely willing to bust his own arms and keep going. Finally, he's also the Charismatic type, despite his somewhat introverted nature, as his heroic drive and willingness to give his all, even if that means trashing his body to an unbelievable extent, for the sake of his classmates inspires them to give their all when it comes to supporting him.
  • Leaning on the Fourth Wall: In the manga, he spouts this line upon meeting All Might for the first time:
    Midoriya: All Might! The real... the real one!! He's drawn in a completely differently style!!
  • Leeroy Jenkins: Gran Torino accuses him of being prone to attacking first, although he's much more thoughtful than most examples.
  • Legacy Character: He's just the latest of many who gained One For All.
  • Leitmotif:
    • He shares his theme with the show in general, "You Say Run" and its second version "Jet Set Run", which often plays whenever he has a moment of awesomeness.
    • "Worthy Rival, Written and Read as Friend",note  is a theme that he receives in Season 2, generally used as the theme for his Full Cowl technique and plays over again during his fight against Muscular.
    • Every episode of Season 3 opens with "Battle of Deku" as Izuku describes his aspirations and the setting itself.
  • Let's Get Dangerous!: In the Internship Arc. Mirio has lost his Quirk, Overhaul is more powerful than before, Aizawa is captured, Eri is traumatized, the League of Villains is involved and Nighteye is impaled. On top of that, there is Nighteye's prophecy stating Midoriya will die and the mission will fail horribly. Midoriya's response is to use Eri's Quirk and unleash One For All's full power, which is otherwise impossible to do so in his current state. This drastically turns the tables and Midoriya curb-stomps Overhaul, successfully completing the mission.
  • Lightning Bruiser: Using One For All: Full Cowl, Midoriya increases both his mobility and striking power to above average levels, being able to smash through thick tree trunks with only moderate effort. Its overall power output is less than when using one limb at full power, but he is able to fight without wrecking his body.
  • Logical Weakness: Two of them. Midoriya only received his Quirk later in life, thus using it is not at all "natural" to him and puts tremendous strain on his body, although he's working to alleviate that. Second and most importantly, his analytical skills is what often gets him ahead of his enemies, but that means he still needs some time to think. A sufficiently speedy opponent who can Speed Blitz him can deprive him of that advantage.
    • Giving someone who is defined by their anxiety and self-esteem issues a power that functions off of their raw emotions is a enormous roadblock to being able to use them safely.
  • Lost in Translation: Midoriya got his nickname from an Alternate Character Reading of his first name that can be read as "puppet" as in a "weakling who's a puppet that can't do anything". On the other hand, it also sounds like "dekiru", which can mean to be able, ready, and even good at doing something. Hence, Uraraka helps him embrace the derogatory nickname as his hero name for its "never giving up" feel. Since there's no way to properly convey this in other languages, Uraraka instead ends up calling it cute in the international versions.
  • Made of Iron: Majorly subverted as he breaks his bones when he uses One For All's full power but he can move beyond this pain to use his broken limbs in order to save someone as he pushes his body even further than his limits to demolish his opponent with this extreme power.
  • Magnetic Hero: It's mentioned very often that Midoriya has a natural tendency to get people to follow his lead, as well as to push themselves further because of what he's already accomplished. Because of his kindhearted nature, powerful Quirk, intelligence, and his desire to help people to the point of willingly tearing his body apart, he's managed to garner the respect of fellow students, teachers, and even other heroes.
  • Magnetic Medium: Of all users of One For All, Midoriya has had the most experience with the ghosts of the Quirk. Luckily for him, they all act as Spirit Advisors. Previous users, including All Might merely experienced brief silhouettes of their predecessors. Nana Shimura only got a vague message. Midoriya however, got bursts of power, memories, some advice and new Quirks.
  • Major Injury Underreaction: Essentially Midoriya's fighting style. Almost every full power use of One For All will break his bones, from a finger to an entire limb. And when really desperate, Midoriya continues using the broken limb. This ends up being subverted later when, after overusing his powers during the Forest Training Camp Arc and playing this straight again, he ends up in an almost catatonic state as the pain doesn't even allow him to sleep.
  • Manly Tears:
    • After receiving One For All, he cries in front of All Might.
    • Happens again in Chapter 95, when All Might hugs him in the beach, after having lost all his powers, but states that he will continue to train him and that he is proud of him.
  • Many Spirits Inside of One: One For All isn't an entirely physical ability. The wills of previous One For All users also live within the Quirk in the form of vestiges. Almost all users briefly glimpse the shadows of past users at least once in their lifetimes. During his match against Shinso at the Sports Festival, Deku witnesses the vestiges who help him overcome Shinso's brainwashing Quirk by activating One For All in his fingers. All Might dismisses it as a one time event, although he later admits that he is ignorant about this aspect.
    • This becomes a major plot point when Midoriya discovers an exclusive affinity for One For All's esoteric aspect. He becomes the first user to actually be able to interact with past users. The predecessors can show him visions of the past and advise him. Midoriya is also the first user who can access all the Quirks of previous wielders which have been augmented by One For All.
  • Meaningful Name:
    • His chosen hero name is Deku, which was originally used as an insult against him. Midoriya proudly claims it, stating that it now shows his determination. Rather like how he's not inherently a hero but has to work towards becoming one.
    • Midoriya's name contains the kanji for "green" (緑), "valley" (谷), "coming out/being from a certain place" (出) and "long ago" (久). Incidentally, the "ku" in "Izuku" is homophonous to the number nine in Japanese. Guess what? He's the ninth user of One For All.
    • His surname translates to the Japanese word for "green". Guess what color is most commonly associated with him (his hair, eye color, superhero costume, and even the visual effects of him using One For All in "Full Cowling" mode)?
  • Mechanically Unusual Fighter: Izuku has seven Quirks instead of one.
  • Megaton Punch: Tends to employ One For All 100% this way.
  • Men Don't Cry: As of the Internship Arc, Midoriya has tried to stop crying so much, especially in public. Presumably, this is to try and promote the image of a pro hero (and more specifically, emulating All Might as saving the day with a smile). However, as Todoroki and Iida state, it's not wrong to cry when he is facing something awful, and he starts crying either way, so it ends up as a subversion.
  • Messy Hair: His hair is curly and sticks out in every direction.
  • Mid-Season Upgrade: Midoriya gains some kind of new technique or gear that improves his abilities halfway through every season besides the first. Full Cowl in Season 2, Shoot Style and Costume Gamma in Season 3, and Mei's air focusing gauntlets in the U.A Cultural Festival Arc.
  • Mind Hive: One For All seems to reach critical mass when All Might passes it down and gives Midoriya a power no previous wielder has. All of the previous torchbearers are inside of him and can talk to him or lend assistance when needed. Before, neither All Might nor Nana believed the Vestiges were anything more than residual willpower. The Quirk also gives a mental link to All For One, which is how Midoriya and All For One can see each other's memories and let All For One know for sure that Midoriya was the new wielder.
  • Momma's Boy: A rare case in which this is not Played for Laughs. He and his mother are very close and her words of encouragement are just as important to him as All Might's. When he gets his hero costume upgraded, he makes it a goal to keep the base as close to the original as possible, because that was the costume his mother gave him.
  • Muggle Born of Mages: Both of his parents have minor Quirks. Midoriya himself didn't have one until he received One For All from All Might.
  • Multicolored Hair: Thanks to Hair Color Dissonance, it looks like Midoriya has black and green hair.
  • Muscles Are Meaningful: Midoriya works out all throughout the series in order to become a better vessel for One For All. As such, he goes from being a scrawny wimp to being lean and muscular, emphasizing his role as a brawler. By the time of the U.A. Cultural Festival Arc, he can catch steel girders with the help of One For All: Full Cowl and keep one aloft with a single hand, albeit with incredible effort.
  • My Greatest Failure: At least until the Internship Arc, he considers not properly thinking and taking responsibility about how to make One For All his own. This is because it resulted in allowing Bakugo to be captured and the heartbreaking amount grief he caused his mother by continually failing the promises to be careful that Midoriya made to her. After the Internship Arc, his greatest failure becomes not saving Eri at the very beginning of the arc when he had the chance, resulting in more trauma for Eri, Mirio losing his power, and the death of Sir Nighteye.
  • My God, What Have I Done?: He shares this reaction with Mirio over their inability to rescue Eri, going as far as to doubt his skills as a hero.
  • My Suit Is Also Super: Averted at first, since his hero costume was mainly a cheap jumpsuit his mom made for him in celebration of getting into U.A. It was subsequently shredded by Bakugo and Midoriya's own use of One For All during the Heroes vs. Villains training exercise. After getting his costume repaired, it was reinforced with much sturdier and darker fabric in addition to giving him reinforced gloves along with elbow and leg protection. After visiting Mei, the gloves are lengthened past his elbow for extra support while his leg protection is reinforced with metal and shock absorbers to support his new Shoot Style. In the U.A. Cultural Festival Arc, inspired by All Might, Midoriya orders a new pair of gloves from Mei in order to increase his fighting power and grant him long range attacks by helping him direct the air pressure created by One For All: Full Cowl into a cannonball like blast to limit collateral damage and focus its power.
  • The Narrator: The entire series is Midoriya's story on how he became a hero, and is narrated by his future self.
  • Nerd Action Hero: He's called a "hero otaku" because of his obsession with heroes. As he develops as a hero, his information gathering skills become useful when fighting against villains or even his fellow classmates.
  • Nervous Wreck: He has a tendency to be quite skittish and overemotional. He later starts to grow out of it.
  • Never Live It Down: In-Universe. Aizawa makes it clear to him that he is not going to let him forget about his unsanctioned fight with Bakugo and the damage it did to his image.
  • Next Tier Power-Up: Consists of training to the point he can start using additional percentages of One For All without destroying himself.
  • Nice Guy: Midoriya is sweet, polite, caring, and friendly. He's one of the nicest people in Class 1-A, never looking down upon anyone or going out of his way to antagonize people unless they somehow deserve it. His drive to become a hero is also the most altruistic among the main cast, between Bakugo using the hero name to prove his superiority, Uraraka being Only in It for the Money, and Iida's desire to continue his Heroic Lineage. Midoriya is in it to save people with a smile and nothing else, just like his idol, All Might.
  • Nice Shoes: Midoriya's red-and-white sneakers are his Iconic Outfit and he's almost never seen without them. They're somehow able to take whatever punishment he puts them through, up to and including using One For All at 100% on his legs. They also mesh nicely with his hero costume and even earned a vote on the popularity poll.
  • No Good Deed Goes Unpunished: Due to the volatile nature of One For All and his own Chronic Hero Syndrome, Midoriya frequently suffers severe injuries and setbacks while trying to help others. During the U.A. Sports Festival, he loses after trying to console Todoroki and make him use his full power and his reckless fighting style earns him zero internship offers despite his high placement in the tournament. After the Forest Training Camp Arc, his reckless use of bone breaking attacks to save Kota and try to rescue Bakugo has doctors warning him that using them more than a few more times will end up paralyzing his arms. Then after the Hideout Raid Arc, his attempts to help Bakugo overcome the guilt he feels over All Might being forced to retire end with both of them being placed under house arrest and left behind in class.
  • Not So Above It All:
    • He's just as excited as Mineta to get the chance to go into the girls' rooms.
    • Although it is rare, Midoriya does admire beautiful ladies, although not as blatantly as Mineta. He finds Uraraka cute, is awed by Nejire's looks and finds Nana Shimura to be really beautiful.
  • Not So Different: Both Jiro and Midoriya are Adorkable teens that have wanted to be heroes since they were little kids so they could help people, and are very passionate about their hobbies enough to compile notebooks on them, then quickly get embarrassed about when others notice them. For Midoriya, it's hero analysis, while it's music for Jiro.
  • O.O.C. Is Serious Business: Midoriya, being the Nice Guy that he is, usually tries to keep his cool with his enemies. That composure breaks when he finds out what Chisaki has been doing to Eri.
    • His All Might collection is almost holy in importance to him, as is all rare All Might memorabilia. So it's telling that he's so terrified of what's happening to him after speaking to the dead users of One For All and destroying his room that he doesn't seem to give a damn that most of it is ruined.
  • Oblivious to Love: Is unaware of Uraraka's growing crush on him. A large part of it seems to stem from how he spent most of his childhood as being an unpopular child that most people teased. Presumably, he never expected a girl to start liking him like that, even after becoming a hero in training. Not to mention, the growing responsibilities and duties that both are spending alot of their time focusing on. He's probably less oblivious to Toga's crush, probably because her displays of affection involve stabbing.
  • Ocular Gushers: When he gets really emotional, his eyes become high powered fountains that can bury his legs in the ground. This is frequently lampshaded:
    All Might: You need to fix those leaky eyes of yours!
  • Odd Friendship: Aoyama acts very vain and haughty, but inside he is a very insecure boy with a Friendless Background and has No Social Skills. After finding out about his issues, Midoriya and Aoyama strike up a friendship, with the latter worrying about him as Midoriya takes too long to run into town and by a length of rope for the U.A. Culture Festival.
  • Oh, Crap!: He has some very expressive ones. For example, he has a massive one when he is about to blast Monoma. Suddenly black tendrils of energy that resemble lightning explode from his arms, damaging his support gear.
  • Only Friend:
    • A variation with Todoroki. While Todoroki has opened up to people and is clearly well liked by the group, the one to immediately check up on him, invite him to things and chat with him the most is Midoriya. Todoroki is actually rarely seen interacting with other characters, but he is, by no means, isolated from the group.
    • Midoriya is also this to Aoyama after they bond over the fact that both of their Quirks are not kind to their bodies at all even though the latter's flamboyant persona puts off his classmates.
  • Only Sane Man: In the Provisional Hero License Exam Arc, where he calls Todoroki and Yoarashi out for fighting against each other instead of focusing on Gang Orca, who is the immediate threat there.
  • Otaku: He's a superhero otaku and his knowledge becomes very handy. His Determinator qualities are the result of taking his obsession with learning about heroes and applying it into actually being a hero.
  • Out of Focus:
    • Midoriya isn't the focus for the entire of the Pro Hero Arc. He only shows up as a background character trying to show support to Todoroki. It's not until Chapter 192 the focus goes back to him.
    • The Joint Training Arc follows with it, because the arc is formatted to give focus to several characters from Classes 1-A and 1-B, besides Shinso. Midoriya is only part of the arc by making comments about the on-going fights, even then he might only shows up a few panels every few chapters. During the final round, Midoriya returns to the spotlight.
    • Once again, during the Meta-Liberation Army Arc, Izuku doesn't appear. Instead, the League of Villains are the main focus.

    Tropes P to T 
  • The Paragon:
    • His Chronic Hero Syndrome was only part of the reason All Might designated Midoriya as his successor. The other reason is that Midoriya's attempt at heroism inspired All Might himself to take action. He is also the one that makes Mineta, Iida, Todoroki, and Uraraka decide to work harder towards being a hero. This is a quality that Aizawa lampshades while talking to Ms. Joke about the two students that move Class 1-A forward.
    • In an anime-exclusive episode during the Provisional Hero License Exam Arc, Yaoyorozu recalls Midoriya's conviction and selflessness when she and her allies are on the ropes against a strategist. She gets a Heroic Second Wind and defies her opponent's plan to win.
  • Pintsized Powerhouse: Downplayed, but he's one of the lower half of the classmates' height, yet he has the strongest Quirk, even if he hasn't actually mastered it.
  • Positive Friend Influence: To pretty much all of Class 1-A, having inspired Mineta, Uraraka, Iida, and Todoroki to be better heroes. Aizawa mentions that he is one of the moving forces behind Class 1-A drive and skill together with Bakugo, and has played an important role in the other's Character Development, having stopped Iida's revenge against Stain and pushed Todoroki to reconnect to his mother.
  • Poster-Gallery Bedroom: Midoriya's room is covered from top to bottom with All Might merchandise, having everything from the posters, to alarm clocks, to action figures. He's horribly embarrassed by this when his friends come knocking on his dorm door, as it clearly shows how much of a hero Otaku he is. It's used later to show how scared he is to the point that he doesn't care at all that his priceless All Might collection was destroyed, because he just talked to several dead people on top of the fact that he's the one who destroyed all of it in his sleep and doesn't know how.
  • Power Incontinence: Played with. Midoriya can activate One For All at will, but when he first receives the Quirk, the only was he can use it is either not at all or with 100% of his power focused into whatever extremity he is attacking with, invariably breaking every bone in that extremity. He eventually learns to not focus his powers on one point, but rather to spread it out over he entire body; as a result, his attacks aren't as strong, but he reduces his risks of serious injury. After the previous users start interacting with him directly, One For All begins to act very strangely, doing things like turning itself on in the night. Hearing about it even makes Bakugo worried about what the hell is happening to Midoriya. It's later on revealed that One for All has also been assimilating all the Quirks of its previous users and that his uncontrolled emotions will cause these unknown and now greatly empowered Quirks to lash out. To control the Quirks, Midoriya must first control his emotions.
    • Midoriya heeds his predecessors advice and is now able to exert basic control over Blackwhip, but it still is so painful and hard to control that he'd rather not use it.
  • Psychoactive Powers: The Singularity version of One for All operates completely off of his thoughts and emotions, which is one of the reasons he has so much trouble controlling it compared to the previous wielders. As a Nervous Wreck with confidence issues, it's quite possibly the worst possible situation for him. The way he activates his powers are by thinking about what he wants to do, then One For All selects the most relevant power to the thought. For example, because All Might makes up most of Midoriya's thought process it usually manifests as Super Strength. If he really wants to catch something, Blackwhip will be chosen. The intensity is based off of his more base emotions like anger which can be absurdly dangerous if he isn't in a calm state of mind. When he goes into an atomic rage at Monoma for blaming Bakugo for ending All Might, his Blackwhip nearly killed everyone nearby including himself.
  • "The Reason You Suck" Speech: Gave a small one when Shigaraki cornered him and forced him to have a chat; what makes him and Hero Killer Stain different? Why is everyone looking at Stain and ignoring Shigaraki despite the ruckus he caused?
    Midoriya: What's the difference between you two? ...I neither understand you nor accept you... Whereas for the Hero Killer, I don't accept him either but I do understand him. For both me and the Hero Killer, we started out by watching All Might. And back then, I was saved by him. At the very least, he didn't destroy because he wanted to. And he didn't give up so fickly. His methods were wrong, but he tried to live according to an ideal... That's what I think.
  • Red Oni, Blue Oni:
    • Izuku is the blue oni to Kacchan's red oni. As he is kinder and meeker than his frenemy that's angrier and a hell of a lot meaner than him. Also contrasting their costumes as Izuku has cooler colors while Kacchan has warmer colors.
    • He becomes the red oni to Shoto's blue as Izuku is more emotional and displays a talkative attitude when nervous, but Shoto is more stoic and rarely speaks to his classmates.
  • Required Secondary Powers: All Might's strength does not come with invulnerability. Midoriya has to train long and hard to make it so that his new powers won't tear himself apart. Even after training, his muscles still lock up and his bones shatter after use. He does manage to find a way to use One For All without crippling his body, but at the expense of not having as much strength on his attacks.
  • Retool: Of Jack Midoriya from My Hero.
  • Righteous Rabbit: Even if he doesn't always wear it, his hood across several costumes incorporates the silhouette of All Might's signature hair locks as a pair of long rabbit-like ears.
  • Roaring Rampage of Revenge: Overhaul should have never abused Eri the way he did. Little did he know Izuku would give him the beating of his life.
  • Rugged Scar: In his fight with Muscular, Midoriya tears the everloving hell out of his right forearm joint trying to push back the immense force of Muscular's wadded up muscle fibers. Following this, he is left with catastrophic damage to that area of his body and a shredded mass of scar tissue that is up there with All Might's stomach wound in how disturbing it is when seen. Because of that, Midoriya begins wearing a sash/support brace underneath his shirts to conceal the horrific injury when his bandages come off and prevent further damage to his already heavily atrophied joint. He hasn't shown it exposed to any of his friends, likely because he knows the reaction to it will be fear and concern for his well-being.
  • Rule of Empathy: Midoriya is practically a textbook example. Which is one of the main reasons why the egotistical Bakugo hates him so much. Nothing can stop him from putting his life on the line to help or save others who need it. All Might recognizes immediately this virtue of his as being worthy of a true Hero and inspires him to make Midoriya his successor.
  • Running Gag:
    • He has a tendency to mumble when he overthinks, complete with a "mumble" sfx around his speech bubble, creeping out the people around him until someone reminds him to stop.
    • His Manly Tears, to the point where after winning the cavalry battle, he becomes quite literally a human geyser, even sticking himself in the ground due to the sheer water pressure of his tears. All Might lampshades this often, saying things like, "You need to fix those leaky eyes of yours!"
    • He tends to suddenly start taking notes of other people's Quirks.
  • Savvy Guy, Energetic Girl: With Uraraka.
  • Scars Are Forever: Using One For All with his broken arm during the fight against Todoroki left it even more broken, to the point that surgery plus Healing Hands couldn't fully repair it, which gave him a lot of scars on his right hand. He's left with even more intense scarring on his right upper arm after he was forced use his already broken arm to use One For All at 100% of its power several times in rapid succession.
  • Screw Destiny: After All Might reveals to him that Sir Nighteye used his Foresight and predicted that All Might would be dead within a few years (one, by the time that All Might tells Midoriya about it), Midoriya has this reaction and states that they'll twist fate together to protect him. Later on in the same arc, Nighteye reveals that he predicted Midoriya's death along with his own during the raid of Chisaki's hideout as they fail to save Eri and is shocked to see that Midoriya is winning against Chisaki with Eri's help as he's being rescued by Ryukyu. In the end, Nighteye admits that Midoriya did twist the future, as Eri is safe if feverish and he is badly hurt, but on his way to the hospital, while Midoriya himself is nearly uninjured. Unfortunately, Nighteye does end up dying once he's in the hospital.
  • Screw the Rules, I'm Doing What's Right!: Midoriya is an usually very respectful kid, but once the opportunity to save or help someone can cause trouble down the line, he's willing to forgo rules, codes and authorities in order to do what he feels to be right. He confronts both Stain and Gentle without supervision, placing his life at risk and breaking rules and protocol in the process. This gets deconstructed in that his reckless heroism frequently lands him in hot water with the police and Aizawa and makes him come across as a Hypocrite when he runs off to save Bakugo even after Iida reminds him of the consequences they both faced.
  • Screaming Warrior: Izuku has to employ this otherwise One For All would not work. He also does this in very stressful situations where he can do nothing but unleash a roar enough that even rivals Kacchan in this department.
  • Secretly Selfish: The Internship Arc implies that Midoriya desperately desires the external validation he gets from his idols like All Might due to being derided as useless and worthless prior to receiving One For All. He even screams at All Might for keeping Mirio's status as a potential successor a secret and is devastated when confronted with the possibility that All Might could have chosen the wrong person.
  • She Is Not My Girlfriend:
    • Both Mineta and Kaminari believe that he and Camie have some sort of relationship, and accuse him of being some sort of Bitch in Sheep's Clothing that uses his innocent looks to attract women. Given she turns out to be a villain in disguise, they're very wrong:
    Mineta: "I misjudged you, you curly haired, smooth talkin' son of a bitch!!"
    • He gets this from Uraraka, Yaoyorozu, and Jiro in Two Heroes when he's touring the expo with Melissa.
  • Sherlock Scan: Midoriya's analytical skills are almost a Quirk in their own right; he is able to quickly analyze someone else's Quirk and fighting style by watching them, and formulate an effective strategy to counter them.
  • Shrinking Violet: At the start of the manga, he was a full blown one, but after his Character Development, he starts to grow out of this. His first reaction to most social interactions is to act timid and skittish, but he can soon drop it. He specially does this with Bakugo, whom he still seem to not know how to behave around.
  • Shy Finger-Twiddling: He twiddles his thumbs while talking to All Might for the first time.
  • Shonen Hair: Downplayed. Midoriya has the Messy Hair typical of a shonen protagonist, but with soft curls instead of sharp spikes, a visual indicator that he has a more "soft" personality than is typical for shonen (e.g. a Shrinking Violet rather than Hot-Blooded).
  • Signature Move: Full Cowl, a sort of Super Mode in which he uses a fraction of One For All applied to his entire body instead of 100% of it applied to a specific limb or digit in order to lessen the blow back to himself.
  • Sketchy Successor: Accused of this by Sir Nighteye. He believes that Mirio would be a far better option than Midoriya to be the user of One For All, since the latter is so naive, inexperienced, and lacks a sense of humor.
  • Socially Awkward Hero: Midoriya is capable of great feats of heroism. Even without a Quirk, he wasn't one to sit around and do nothing while others suffered and you can bet in a fight he will be charging head long in the heat of it. In social situations though, Midoriya is incredibly shy and that goes double if a girl is involved. Also ends up in a pseudo-Twice Shy situation with Uraraka who likes him but becomes embarrassed if anyone brings up her crush.
  • Stiff Upper Lip: His dream is to become a hero who can save the day with a smile.
  • Stock Shōnen Hero: Mostly averted. While he's a determined underdog with a heart of gold who wants to become the world's greatest hero, amasses a group of True Companions, and gains one of the world's most powerful Quirks, he's more timid than most examples and his greatest strength is his willingness to learn, analyze, and experiment to find the best course of action. He does have his moments of recklessness and over-the-top screaming, but far less than the standard Shōnen Jump protagonist. Most of the more common traits show up in Bakugo, who paints them in a far more negative light.
  • The Strategist: Midoriya's greatest asset is his mind and tactical capabilities. This trait of his shines the most when he's with his classmates, where he uses the information he knows about their Quirks and draws out their fullest potential. In the Provisional Hero License Exam, he manages to notice what Aizawa hadn't told them and the best way to make sure his class has a chance in the upcoming battle: they lost the advantage of not having their Quirks and fighting style known, so it's much more advantage for them to stick together and use their newly developed skills than going off alone.
  • Super Empowering: How he obtained his Quirk. Users of One For All have the ability to pass along its power to another person; All Might was the one that transferred the power to Midoriya. It is later revealed Midoriya will be the first user to awaken Quirks of previous users that were locked within One For All.
  • Super Mode: Thanks to Eri's Quirk, Midoriya is temporarily able to access One For All: 100%, without any injuries at all. He proceeds to fight Overhaul on equal terms. Note that Midoriya at full power is much stronger than All Might ever was. Given the great odds stacked against him, this also qualifies as Let's Get Dangerous!.
  • Super Strength: One For All allows him to use incredible super strength to overcome various obstacles. Once he gets the hang of Full Cowl, this is downplayed, as despite being stronger than a normal person, Midoriya still can't use even close to One For All's full strength.
  • Superior Successor: One For All is cumulative, and becomes stronger the more it's passed down. Once he fully masters it, he'll become more powerful than All Might ever could be. This is compounded with the reveal that Midoriya's the first One For All user who can use all of the previous wielders Quirks too, which are also being empowered by One For All. So not only is he the Superior Successor to One For All, he's the Superior Successor for all the previous Quirks.
  • Superpower Lottery: Played with. For a Quirkless guy, Midoriya received a stronger version of the Quirk of the most powerful hero, All Might. Unfortunately, his body is still not fully compatible with the Quirk and his bones get broken if he uses One For All too much. Played straight when it is revealed that Izuku is the first One For All user who can wield the Quirks of his predecessors. He has the potential to unlock six other Quirks and all these Quirks are drastically stronger than they were in the past because of One For All's power. The first Quirk to emerge is Blackwhip. However, Midoriya must first master One For All if he intends to use the other Quirks at their max potential.
  • Super Speed: He's not as fast as Iida, but he can easily go faster than most students and heroes. Pushing One For All past 20 percent makes him even faster than Iida is, and 100 percent lets him Flash Step in mid air. It's given a bit more focus in Two Heroes, where he can even dodge gunfire at 5% if he predicts where it's coming from and has angles to jump around and he can keep up with All Might as he runs towards Wolfram.
  • Survivor Guilt: The end of the raid on the Eight Precepts of Death leaves Mirio Quirkless and Sir Nighteye with mortal wounds. As a result, Midoriya feels terrible about the fact that he got away with comparatively minor wounds and needed Eri and Aizawa to save him, trying to hand off One For All to Mirio to make up for the loss of Mirio's Quirk and Nighteye's previous commentary about how Mirio would be a better successor. Mirio refuses before giving Midoriya a You Are Better Than You Think You Are speech.
  • Sweat Drop: Almost always breaks out in a nervous sweat when someone or something rattles him.
  • Swiss-Army Superpower: One For All is a Quirk that stockpiles power to grant enormous Super Strength. When applied evenly throughout the body, it also grants a degree of Super Speed, the ability to Wall Jump and leap considerable distances In a Single Bound, the ability to Double Jump and redirect oneself in mid-air, and the ability to fire air blasts. It can also be transferred to a Quirkless person and it cannot be stolen forcefully. In Midoriya's case, he can interact with deceased users of One For All and can view their memories from a third person POV.
    • And as of late, it has six more Quirks stored within it from the previous users, all of varying uses with the first demonstrated being Blackwhip, a destructive sort of Combat Tentacles that can readily wreck everything in their path if the user doesn't control them with their emotions.
  • Talk to the Fist: Chisaki's attempt at giving him a "The Reason You Suck" Speech about his stupidity and how his mission to save Eri is hindering the future of the world backfires badly when Midoriya gets so pissed at him that he simply kicks him into the sky and lynches him mid air.
  • Technician vs. Performer:
    • Midoriya and All Might:
      • A teacher-and-student variation exists between the protagonist Midoriya and his mentor, All Might, who trains him in the use of their shared Quirk, One For All. All Might is a performer. From the day of his heroic debut, saving people while laughing in the face of disaster and proclaiming everything will be all right now because he is there, All Might has inspired confidence and admiration over his career. Midoriya, meanwhile, is a technician. He's quiet, has taken notes on heroes since he could write and tends to impress people on a much more individual level. All Might's mentoring of Midoriya is hampered by this fact, as the former took to One For All much more naturally than the latter has, yet fails to realize his student isn't as intuitive as he was. His teachings are less informative than they should be as a result.
      • The contrast is further shown in how All Might's teacher, Gran Torino, approaches them. He taught All Might by basically subjecting him to Training from Hell and beating the crap out of him to the point that the latter trembles in fear of the former years later. He deals with Midoriya by giving him a few choice pieces of advice, letting the boy work out the answers on his own, then beating the crap out of him to give Midoriya a chance to test what he's come up with. Midoriya makes much more progress controlling One For All in a week with Gran Torino than he had in a significantly longer period with All Might.
    • Midoriya and Bakugo:
      • Midoriya shares this contrast with his childhood friend and bully, Bakugo. Midoriya is timid, thoughtful, and has to constantly put in the work to catch up to his peers in using his powers. Bakugo is a hothead driven to surpass his peers who prefers to rush in headfirst and is a more naturally gifted fighter. Where Midoriya sees being a hero as cool because they help people, Bakugo sees being a hero as cool because heroes always win. The differences between them are highlighted as early as the U.A. Entrance Exam. Bakugo passes the practical exam exclusively by destroying robot adversaries for points. Midoriya makes it through exclusively by passing the Secret Test of Character, fighting a powerful foe worth zero points to save an student who got trapped in its warpath.
      • In the Provisional Hero License Exam, in which the students are tested for the right for licenses that let them act as heroes in limited situations, the second phase is a simulated rescue mission which involves a combination of fighting off villains and rescuing survivors. Bakugo's tunnel vision on the surface level, action oriented side of heroing bites him hard, as he's excessively rude to the people he's supposed to be saving even as he's making appropriate calls on whether to help them or send them to aid stations. Midoriya, despite some initial stumbling, is much more well-rounded and handles both the rescue side and a simulated villain attack much better. This results in Bakugo being one of only two members of the class to not pass the exam. Later, All Might tells both of them that a mix of technician and performer is ideal, and that Bakugo was held back by being too focused on the surface fame of being a hero, while Midoriya is too focused on the nuts and bolts and tends to be less driven and ambitious.
    • For all that Midoriya is the technician when placed beside the inspirational All Might and attention grabbing Bakugo, the dynamic flips when Midoriya is compared to Iida. Midoriya's natural willingness to jump into danger to help others and relative recklessness contrast sharply to Iida's by the book, prone to overthinking attitude. In the U.A. Entrance Exam, Iida focuses on performing the test following the rules laid out to them beforehand. The idea of attacking the giant, zero-point robot never occurs to him for a moment and only seeing Midoriya do so to save someone else makes him stop and consider that there even is a Secret Test of Character involved. As the two become friends, Midoriya's natural heroism helps inspire Iida, while Iida's adversity to recklessness has helped to keep Midoriya in check.
  • Technicolor Lightning: When using One For All: Full Cowl, Midoriya often leaves trails of what appears to be green lightning in his wake, but these can't actually hurt anyone and are likely just an aftereffect of the power he's using.
  • Tender Tears: As mentioned under Ocular Gushers, Midoriya cries a lot, whether it's Tears of Joy, pain, regret, sympathy, or fear. He even resolves to stop crying after the Internship Arc as part of his dream to save others with a smile, though he ends up crying anyway after Todoroki tells him that it's alright to do so.
  • Thinking Out Loud: He tends to start mumbling whenever he's thinking hard about something. This used to creep his friends out, but they've gotten used to it to the point that they remark about how they almost missed it after he does it for the first time in a while.
  • ¡Three Amigos!: Quickly forms this sort of relationship with Iida and Uraraka, who are his closest friends at U.A.
  • Throw the Book at Them: Throws his bag full of books at the Sludge Villain while trying to save Bakugo in the first chapter.
  • Tiger Versus Dragon: Midoriya is the dragon to Bakugo's tiger.
  • To Be a Master: His goal is to become the world's greatest hero, following his idol, All Might.
  • Took a Level in Badass:
    • Thanks to his training with Gran Torino, Midoriya has developed a new way to use One For All, dubbed "Full Cowl." Rather than running a set amount of it through a single extremity, it flows through his body evenly, boosting his overall ability accordingly. Proof of success? It let him hold his own against and even overcome The Hero Killer.
    • Midoriya later finds out that he can temporarily double up his output up to 20%, although it can cause him some pain.
    • After training with All Might after the Hideout Raid Arc, Midoriya can fire multiple air blasts with a flick of his finger with the help of a new pair of gloves designed by Mei.
  • Trademark Favorite Food: According to official materials, it's Katsudon, or fried pork cutlet and other toppings eaten over a bowl of rice. He's frequently seen eating it in cafeteria scenes.
  • Training Montage: Chapter 2 focuses this on this after Midoriya agrees to gain All Might's powers. Eight months pass between then and the finish, and Midoriya is shown having developed an impressive build.
  • Tricked-Out Shoes: His second hero costume upgrade (named Costume Gamma) adds special power-reinforcing iron soles that go over his sneakers. They protect his feet from sharp objects and debris while also adding a special power-blowback effect that increases the force of his kicks by responding to strong impacts in order to supplement his Shoot Style.
  • Traumatic Superpower Awakening: His black tentacles activating for the first time while he was conscious go completely out of control, causing him the worst pain of his life while trying to kill everyone around him as he makes futile attempts to stop it. Their activation in his sleep wasn't pleasant either, but this time he's in so much pain that he can't even have a proper reaction to suddenly developing a totally new superpower. His attempts to stop quickly fall into Madness Mantra:
    "It hurts! It hurts! It hurts! STOP! STOP! STOP! STOP! ONE FOR ALL!"
  • A "True" Hero: Midoriya's goal is to become a hero, not out of glory or material gain, but out of a sincere desire to help people. His hard work, determination and bravery leads to several people considering him to be one of the only people truly worthy of the title of "Hero", alongside the man he idolizes: All Might.
  • Twice Shy: He and Uraraka clearly have beyond platonic inclinations for one another, but given his past lackluster social life, along with various outside issues, his feelings have gone unmentioned for the time being.
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    Tropes U to Z 
  • Un-Sorcerer: He's the current trope image. 80% of the population has a Quirk, including both of Midoriya's parents. Midoriya was one of the 20% that didn't. And that number doesn't account for the increasing rarity of Quirklessness with each passing generation − in his generation, it has apparently become extremely uncommon.
  • The Unchosen One: Midoriya was born without a Quirk even though both of his parents had them, thus denying him his dream of becoming a great hero, is an average child with no outstanding qualities, and someone no one ever expected anything great from. However, he meets his idol and hero All Might by pure luck and impresses him so much with his grit, determination, and desire to help that he gives Midoriya the chance to prove himself. Midoriya doesn't disappoint and shows that he's worthy of One For All and gains the power to enter U.A. and become a hero.
    • It's played with later. While all of the above is still true, Midoriya is FAR more compatible with the secret aspects of One For All than All Might, who couldn't even experience Dead Person Conversation or hyper realistic visions like Deku can. Even All Might's master Nana received a cryptic message from the vestiges. Deku is actually even more compatible with it than anyone before him, which causes him to pass the singularity. This becomes one of the most terrifying problems for Midoriya, since no one alive other than All For One knows anything about the horrifying things happening to his body and soul.
    • It turns out that One For All's core is swelling. As a consequence six additional Quirks are awakening within Midoriya, the first being Blackwhip.
  • Uninhibited Muscle Power: What the 1,000,000% Delaware Detroit Smash is described as, being Midoriya using hysterical strength in a moment of desperation, combined with the full power of One For All. It also causes more damage to his arms than any other attack, to the point of unhealable ligament damage.
  • Unstoppable Rage: Midoriya is a nice boy, but when pushed far enough, he is undeniably fierce with his strength and usually it is needed given his opponent will be powerful. Examples include:
    • When he fought Muscular and the assailant angered him to the point where he went above and beyond to 1,000,000% of One For All to demolish the villain. Though given how strong and tough Muscular is, this was a huge boost in power.
    • When he found out that Eri was abused by Overhaul, he uses Eri's Rewind Quirk to tap into 100% of One For All's power and delivers an epic beatdown, all the while maintaining a permanent Death Glare throughout the fight while angrily trying to crush his target. This truly shows how enraged he is.
    • During a Class 1-A and Class 1-B fight, Momona tries to goad Midoriya into speaking by pushing his Berserk Button and calling out how Bakugo led to All Might's retirement. Midoriya doesn't fall for the taunt, but does get pissed to aim a Delaware Smash. His body then goes haywire with massive black tendrils of energy. It's later revealed that it's the Quirk Blackwhip, which belonged to a former wielder of One For All. It's tied to emotion, which partially explained why it went out of control, though the Quirk's amplification via One For All also had something to do with it.
  • Unskilled, but Strong: Played with. As the holder of All Might's power, he has perhaps the greatest raw power out of all the students, but since he is still learning to control it, and it ravages his body every time he uses it. Incredibly, this warps him all the way back into Weak, but Skilled. Unlike the other students, who can use their Quirks at will, he is limited to these explosive bursts of strength that leave him damaged, so he is forced to use his brain to develop strategies and use his power creatively. As he uses One For All 5%: Full Cowl he actively finds ways to be uniquely and even incorporating kicks in his fightings style Shoot Style. He's on his way to becoming Strong and Skilled. But then Izuku increases the percentage of his power and then reverts back to his old unskilled ways especially after he unleashes a new dormant Quirk within One For All known as Blackwhip that is related to his emotions that he needs to control over when he is angry. Then it is revealed he has 5 more dormant Quirks he needs to master before utilizing them in combat.
  • Utility Belt: Played with. He wears a belt with plenty of compartments attached as part of his hero costume, but he's never really seen using them.
  • Unwitting Pawn: To the League of Villains. Midoriya successfully defeated the Yakuza leader Overhaul. The Shie Hassaikai is also rendered defunct after they are systematically defeated and captured by the heroes. But that means they just eliminated the biggest competitor of the League of Villains, paving the way to unchallenged dominance over the underworld.
  • Visual Development:
    • Midoriya looks much more muscular and rugged than what he looked in earlier chapters of the manga, he also has a considerable amount of scars gained through several battles (the ones on his hand are from the battle against Todoroki and in his arm are from Muscular).
    • His hero costume has evolved with time. The Support Department darkened the green color and turned the white details to black in his second costume, also adding a metallic mouthpiece, elbow, and shin guards for protection. His third costume piles up longer and stronger protection gloved and on his knees, with flexible iron soles that go over his sneakers to strengthen his kicks and push back after receiving powerful impacts to protect him from the recoil of kicking into hard things. They also protect his feet from oncoming debris, sharp objects, and other hazards that could potentially prove dangerous with his high-speed fighting style. This last one saves him from being impaled through his feet when Chisaki's Quirk turns the area Midoriya is about to land on into spikes.
  • Volcanic Veins: Occasionally shows this when he activates One For All.
  • Wardrobe Flaw of Characterization: He is the only student in his class who hasn't gotten the hang of tying a necktie, appearing as a round bundle around his neck. It ties into his nervous, jittery demeanor and his lack of experience with his superpowers compared to his classmates.
  • Warrior Therapist:
    • Becomes this in his tournament match against Todoroki. While they were fighting, Midoriya yelled at Todoroki for suppressing his fire powers just to spite the latter's father. Midoriya then claimed that Todoroki's powers do not belong to his father, and that Todoroki shouldn't hold back if he wants to be a superhero.
    • Chapter 118 has him deciding to do this with Bakugo, after he is challenged to fight, as he realizes that the fight is pointless, but it's a fight Bakugo needs to vent out his frustration and sadness due to his guilt over making All Might lose his powers.
  • Weak, but Skilled: When using Full Cowl. His overall power at 5% is only marginally stronger than he was without using it, and he lacks the explosive power of a full powered Smash. However, by increasing his overall power, even at a smaller percent, he is capable of fighting longer, is much faster as a result, and is capable of working in strategies better since he no longer needs to fear breaking his limbs. Furthermore, because he is limiting his power, he can gradually utilize more of it as he improves, allowing him to steadily increase his power, thus improving his abilities naturally but as Shoot Style is implemented he is becoming more Strong and Skilled. However, as he increases his power with One For All in certain percentages, he reverts back to Unskilled, but Strong as he has to train to master higher the higher increase in power into his skill.
  • Wham Shot: During the Joint Training exercise between 1-A and 1-B, Midoriya tries to use Delaware Smash Air Force, only for his arm to burst into black flames like the ones he saw in his dream, shredding his arm brace to bits. It's later revealed that this is because a Quirk named Blackwhip is manifesting within him. Belonging to one of the former wielders, it reveals that Midoriya can now discover and wield the other Quirks wielded by the predecessors.
  • What the Hell, Hero?: Gives this mainly to his more headstrong friends or comrades in order to get an important message across. To where he's starting to form as a loud variant of the Only Sane Man:
    • Calls Todoroki out for not using the fire portion of his Quirk out of spite against his father, while everybody else is doing everything they can.
    • Does it again to Iida, who went crazy for vengeance after Stain, ignoring not only his obligations as a hero-in-training, but also his own safety and the safety of the guy Stain was attacking.
    • To Bakugo, in the Final Exams Arc, which is an important part of his Character Development. Bakugo almost failed both of them refusing to get help against All Might, so Midoriya punched him in the face, both to try and get sense into Bakugo, while also to get Bakugo out of the way of All Might's punch.
    • To Todoroki and Yoarashi in the Provisional Hero License Exam Arc, after they got caught up fighting each other while actively ignoring the real threat (not helping are their Quirks being wide-reaching), refusing to work together and ultimately, endangering Shindou, who had nothing to do with the fight. Midoriya literally says "what the hell" when calling them out.
  • Willfully Weak:
    • As pointed out in the Required Secondary Powers note above, One For All takes an enormous toll on Midoriya's body. Even after training with Gran Torino and being able to effectively use it safely, he can only do so at 5% of One For All's full power and has to continually regulate its usage to avoid injuring himself.
    • By the time Midoriya and Bakugo fight again, to help the latter deal with guilt issues, Midoriya is able to handle One For All at 8%.
    • During the raid of Overhaul, Midoriya is forced to up the ante to 20%. He mentions that he feels intense strain on his body, meaning that he keeps it even lower for his body to get used to it and only went to 20% out of desperation, though he can still fight.
  • With Friends Like These...: Even after everything Bakugo put him through, Midoriya still considers the former to be his friend, even if he admits that they aren't as close as they were as kids, and couldn't help but rush to save him when Bakugo was being attacked by the Sludge Villain. He still calls Bakugo by his affectionate childhood nickname, Kacchan, even though Bakugo brings all of Midoriya's insecurities to the surface. To Bakugo's credit, he does let up somewhat after being saved from the Sludge Villain, never bullying Midoriya outside of class, but is still actively resentful and abusive for much of the story while in-class. He simmers down after the Hideout Raid Arc, after Midoriya told him everything about One For All, causing their relationship to develop into more of a Friendly Rivalry than before.
  • With Great Power Comes Great Hotness: Subverted. Midoriya has to work his ass off to go from scrawny nerd to muscled and athletic in order to even survive being given One For All. Even after becoming strong enough to receive it without exploding, he has to continue working out and refining his body so he can handle larger and larger fractions of its power without breaking his bones.
  • Worthy Opponent: Out of all the heroes he has encountered it appears that Midoriya is the only one Stain deems to be a true hero. Later on, he's seen as such by Stain's Foil Gentle as well after hearing Midoriya's motivations to become a hero.
  • You Can Barely Stand: To save others, he'll push himself until his bones are shattered and his body is beaten bloody and not even that will stop him if there's at least one person he can help.
  • You Gotta Have Blue Hair: His hair is a deep forest green with black dispersed throughout. Albeit, colored hair (and skin) is not at all uncommon in My Hero Academia's world.
  • Your Days Are Numbered: Invoked by Sir Nighteye who foresees that Midoriya will be murdered by Overhaul and the whole mission would be a huge failure. This is averted when Midoriya bends the future with his sheer willpower. He defeats Overhaul and rescues Eri, completing the whole mission successfully. Nighteye believes that the heroes wished for success without a shred of doubt that it actually changed the future to a certain extent.
  • Youthful Freckles: They're not always visible, but during closeups of Midoriya's face, one can see clusters of freckles under each eye. They were more prominent in the early chapters though.

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