Fanfic / Doofenshmirtz Hero Incorporated!

Doofenshmirtz Hero Incorporated! is a My Hero Academia/Phineas and Ferb crossover Fanfic.

During Dr. Doofenshmirtz's first trial run of building his 2nd Dimension-inator, a scuffle with secret agent Perry the Platypus ends up prematurely turning it on, and he ends up on top of the desk of U.A.'s principal, Nezu.

Hijinks ensue.

It can be read here on Fiction.live.

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Doofenshmirtz Hero Incorporated! provides examples of:

• Abled in the Adaptation:
  • Doof's inators help All Might recover from his injuries fighting All for One. By All Might's estimates, it buys him a few more years as the Symbol of Peace.
  • All for One is also slowly being healed by Doof, who gets the benefit of the villain's massive experience and long memory to fill in some of the aspects of the world he doesn't quite get.
• Accidental Misnaming: Doofenshmirtz constantly refers to Nezu as Nezdu, openly and internally. He gets corrected at least once... only to immediately go right back to calling him Nezdu.
• Adaptational Badass: Whereas Charlene Doofenshmirtz was a completely normal woman who was oblivious to her husband's status as a Mad Scientist and would-be supervillain, here she is portrayed as having known about Heinz' villainous lifestyle before they married and a skilled fighter in her own right, with implications she may belong to some kind of secret organization in the vein of S.H.I.E.L.D..
  • Heinz himself, particularly in the eyes of his students and some of his coworkers. He's eccentric to the extreme, but he's a genius in more fields than most people can name, builds things that are flat-out impossible by MHA standards, suffered crippling arm injuries without even flinching, wrestled an eldritch abomination, and trounced three supervillains - killing one, crippling another, and giving the third a Breaking Speech followed by completely no-selling his Quirk. And he's ridiculously protective of his students and their happiness - one remarks that "he'd fight All Might if it'd help you". Oh, and he went off and completely curbstomped Endeavor after finding out what the man had done to his family.
• Adaptational Early Appearance: Due to Doofenshmirtz popping up in the My Hero Academia world, many characters make appearances before the canon timeline.
  • All of the U.A. staff and All Might, most noticeably Nezu, appear before the Entrance Exam arc.
  • Naomasa Tsukauchi appears in the first chapter long before the USJ incident.
  • The Meta Liberation Army make their appearances after the entrance exam, but before the semester starts, namely Curious, Re-Destro, Trumpet and Skeptic.
  • Eri and her Grandfather appear before UA's classes begins.
• Adaptational Superpower Change: Doof offers Shouto the chance to have only ice powers instead of wielding both ice and fire.
• Adaptational Villainy: Zigzagged with Lawrence Fletcher. In canon, he was an ordinary family and working man, here, he is a member of LOVEMUFFIN, but is both not-active anymore and is one of Doof's true friends in the group.
• Adults Are Useless: While a good case could be made for a certain proportion of U.A.'s faculty, Jiro finds herself realizing that Doof is a complete aversion: the instant he noticed she needed additional help with her Quirk, they marched to his office and he whipped the necessary support technology to help her deal with loud noises, and his speech afterwards makes it clear that as far as he is concerned, if he has any form of responsibility for any child under his care, he will move earth and sky to give them the attention and care they need. This makes her decide to keep an eye on Penny and help her, as a means of repaying his kindness.
• Affably Evil: All for One, of all people, plays it straighter with Doof, being genuinely grateful for having his deformities fixed.
• Amicable Exes: Doof and Charlene. While they are no longer a couple, he honestly wishes her the best and hopes she's happy with whoever she has chosen. It helps she knows he tries his hardest, despite his foibles, to be a good father to Vanessa... and the fact a happy Heinz is infinitely better than a seriously pissed Heinz. Which is why she makes it a point to threaten Nezu and destroy his furniture to make a point to him to treat Heinz with extreme care. Nezu also mentions as an aside that, based on his own experience with human interaction, it's likely they will reconcile and get back together at some point in the future.
• Anachronic Order: The events of Nezu and Doof taking down Feel Good are shown in the beginning, skip to the end, and then the middle is shown.
• Androids Are People, Too: Penny's sophonce makes her a real person in the eyes of everyone who understands what that means.
• Artificial Limbs:
  • Doofenshmirtz possesses two prosthetic arms. He lost one due to disintegration, and the other from having a rock splattering it to practically mush. He also made the conscious decision to make them look as organic as possible so as not to freak anyone else out.
  • The hero Ectoplasm has two prosthetic legs as well before he is later gifted a more advanced pair of prosthetics from Doofenshmirtz.
• Awesomeness by Analysis: Spinner is the first person to put together Doof is not from his Earth without being informed of it to begin with by analysing all observable details, noting what's missing, forming various hypothesis, and ruling out the ones that are disproven by further facts until he decides Doof being from elsewhere is the only logical explanation for everything, regardless of how seemingly ridiculous it is to those not in the know.
• Beautiful Singing Voice: Doof finds All for One's voice so impressive, he mentions he could do great in audiobooks, and the elder villain jokingly asks if he should start a podcast. While he only meant it as a joke, Heinz agrees, and All for One decides he might as well troll Toshinori that way.
• Beneath Suspicion: The fact Doof is technically Quirkless makes most people ignore him. Nezu makes it a point to inform him that as long as he avoids major crimes, he's likely to be completely ignored by law enforcement. When Doof uses a Disintegrator Ray Inator at low setting to set Aldera Junior High to collapse after confirming it is a Meta Liberation Army Indoctrination centre and a distribution point for illicit drugs, people suspect a Decay Quirk is used, not Doof's tech.
• Berserk Button: Doofenshmirtz gets into keyboard-smashing anger when Aizawa belittles the scientific validity of his work. It is telling these comments enrage him more than anything Perry could do.
• Bioweapon Beast: Doof disapproves of them, since, aside from their minor psychological effect on enemies, they have no valuable points, either gain free will or die naturally, and they're enormously expensive.
• Blue-and-Orange Morality:
  • Doofenshmirtz's attitudes and mores do not exactly correspond to that of the world he's found himself in. He does not approve in the slightest of bullying, he finds overreliance on Quirks to be a detrimental factor to the students, and encourages open scientific development.
  • Nezu, as a very much not human sophont, has had to teach himself to extensively fake human behaviors.
  • Chase, despite being a fully sentient AI, views himself as a tool for humans first and foremost, is repulsed that Norm views himself as Heinz's son (since he views it as comparing a machine to a flesh-and-blood human), and is privately scandalized that his first AI attempted to kill him. This is entirely intentional - Doof made him and Norm that exact way because he is genuinely terrified of creating General Intelligences, the fullest and most complete form of AI, because doing so is no different from creating life, and he views parental responsiblity towards any such creations as sacrosanct, to the point he demands Mei be barred from all scientific activities until she has learned to be a mother to Penny.
• Brainwash Residue: Loud Cloud notes that he has kept some of Kurogiri's traits, in particular his preferences in clothing, which he can definitely recognize as different from his own.
• Breaking the Cycle of Bad Parenting: Heinz's Hilariously Abusive Childhood is deconstructed, and Nezu particularly notes how it influences his actions. He has already done a much better job than his own parents with Vanessa, and treats all children under his responsibility with the same care. Mei is incredibly downcast at realizing she has twice broken his trust, first with the mechadendrites, and then with creating Penny without giving it due consideration to the ethical implications of doing so.
• Bunny-Ears Lawyer: Doofenshmirtz is this by default, given the series he comes from, and it especially sticks out in the world of My Hero Academia. He's an incredibly eccentric Mad Scientist with a love of absurd schemes and petty revenge, as well as theater and musical productions who, as far as the rest of his new colleagues are concerned, basically came from somewhere that doesn't exist in their Earth, or is possibly a classified organization far beyond their understanding. He is also possibly one of their more competent teachers in spite of his eccentric personality, being able to competently help hero students the others (especially Aizawa) struggle to find potential in, as well as also creating incredibly advanced inventions that drastically alter the canon such as successfully healing the horribly injured All Might, traveling between dimensions, and so on.
• But for Me, It Was Tuesday: For the students of 1-A, the USJ Incident is a highly traumatic event. For Doof, he considers it noteworthy only in how his students need therapy and what his Traumatic Backstory-Inator did, otherwise finding the incident unremarkable.
• Card-Carrying Villain: Doofenshmirtz, at least at the beginning. Tellingly, this is the only claim Detective Tsukauchi identifies as a lie.
• Combat Tentacles: At her request, Chase implants Mei Hatsume with mechadendrites. While it scandalizes some members of U.A., neither her, Chase nor Doof care about anything other than her own decisions.
• Cool Ship: Dr Doof, the Shields, Hatsume, Chase, and UA's robots successfully construct the Broken Echo, a massive self-sustaining flying aircraft with highly advanced technology for the setting.
• Cool Teacher: Despite his eccentricities, Doof proves to be an excellent teacher and shows concern for his charges' well-being.
• Crapsaccharine World: I-Island looks like a pinnacle of scientific virtue and a nice place to live even if you're not a scientist. It's actually a place where scientific development gets stifled for all sorts of reasons with toxic work environments for the scientists at best and life-threatening work environments at worst.
• Crazy-Prepared: Doof has countermeasures for people trying to read his future, which comes in handy when Nighteye tries it.
• Crossover: While the setting has Doofenshmirtz literally crosses over to the dimension of My Hero Academia, there are also a few other additions native to both. Namely, The main character of A Certain Scientific Railgun shows up as one of Doof’s students. The Persona series with Tohru Adachi and Masayoshi Shido and Yakuza with Goro Majima as an employee and family friend of Ochako's family. Doofenshmirtz's home universe also has frequent mentions of Marvel Comics organizations and characters like S.H.I.E.L.D., Spider-Man, the X-Men and Deadpool as a nod to the actual crossover episode, Phineas and Ferb: Mission Marvel. Drusselstein has parts of Bloodborne's backstory, and Charlene Doofenshmirtz is an implied composite of her canon self with the eponymous character of Bayonetta, of all people. The MHA universe also has bits of Madness Combat lopped in, with Snipe mentioning an incident in Nevada where the United States government was forced to hire some mercenaries to quell it. Double is one of the Quirk Extremists that attack I-Island, and her and the rest of the Trinity are revealed to be insane Romanian zealots that believe the Mother of Quirks was a reincarnation of the Mother Mary, while Sundowner had a similar organization in Africa. One of the countries mentioned to have been decimated in the Quirk Wars is Arstotzka.
• Culture Clash: Doof has issues with how things are done in Quirked-Era Japan, both due to American and Japanese differences in the school system, and due to Japan's society having an unhealthy obsession with Quirks. There's also further issues related to his Drusselstein upbringing and his transdimensional nature, such as considering bats an acceptable source of meat and having an education in a system that wasn't the result of wars erasing most of history, respectively.
• Curb-Stomp Battle: The League of Villains "fight" with Doofenschmirtz at the USJ; Doof takes down both Nomu and Kurogiri in seconds with his Traumatic Backstory-Inator, which pulls the targets backstory to the surface and projects it as a hologram. It outright kills Nomu, since it's made from four different people, and the mental backlash is disastrous, and sends Kurogiri into a coma after it separates the two individuals he's made fron, one of whom is Eraserhead's old friend Loud Cloud.
• Cyborg: This version of Dr. Doofenshmirtz has a pair of sophisticated cybernetic arms, complete with synthetic skin and tactile sense. His original arms were lost to a failed experiment, and an extremely failed date respectively.
• Daddy's Girl: Despite her exasperation with her father's schemes, Vanessa does care for her father a lot and gets annoyed at anyone badmouthing him.
• Deconstruction Crossover:
  • Doofenshmirtz realizes, from details like Midnight's hero costume and the general apathy towards certain students that the U.A. faculty isn't technically staffed by teachers as much as heroes trying to be teachers; Aizawa's own obsessive perfectionism towards heroics is only a worrying symptom of a much larger systemic problem, in which the heroes struggle to produce flashier heroes for the next generation rather than treating the children as actual children who need an education and varying degrees of help, and not all of who will ever dedicate themselves to heroics. To his utter horror, the Hero Commission is also hiding the darker details of the profession from the populace in order to keep Heroics relevant (as well as preventing Nezu from easily making reforms to the U.A. system), leading him to genuinely consider them his enemies.
  • Heinz is persuaded to try his hand at being a teacher. While he has no actual degree in education, he compensates by studying his students' dossiers and actively trying to engage with them and understanding how to best help them understand his classes. Even this minimal effort along with bits of general history makes him immensely successful, leading him to poke how this is possible. To his horror, the MHA Earth has lost knowledge of its history to the point all information on World War II and before is lost, all of U.A.'s teachers, including the physical education teacher, are oblivious to the plight of one of his students to the point of ignoring she has been cutting herself on her entire arm up to her shoulder even during class, and most absurdly, science has been ignored and sidelined to the point that all forms of general science education are considered an elective. Ectoplasm helps frame it by explaining the wars that preceded the current society, which resulted in a society that nurtured a catastrophic favoritism for powerful, flashy Quirks and terminal dependence on heroes, that is no longer able or interested in leaving its current form. Even scientific thinktanks like I-Island help more to corral and restrain true scientists like Doof than to truly help anyone.
  • Doofenshmirtz's bouts of Cartoonish Supervillainy and Hilariously Abusive Childhood are also deconstructed: in the world of MHA, where supervillains are guilty of outright crimes against humanity, Heinz's "villainy" makes him nothing more than a harmless eccentric in the eyes of the heroes. And ultimately, he proves to be better at good than bad, while his awful childhood makes him make a very conscious effort to protect children, particularly those under his responsibility, from any form of the same horrors he endured.
• Deliberate Values Dissonance:
  • The indifference to bullying endemic to the Japanese education system is mind-boggling to Doofenshmirtz, a man born in a German-esque country who has lived in America where such things are not nearly as overlooked.
  • Doofenshmirtz's unconventional education strategy, including syllabuses, is perplexing and infuriating to Aizawa who is used to the more strict and structured approach to teaching.
• Dented Iron: Heinz invites two of his students to have a session with his Rejuve-Inator, pointing out that they might have inadvertently hurt themselves by using their Quirks inappropriately. It turns out one had his hearing heavily reduced due to misuse of his Quirk.
• Determinator: Or, as Doofenshmirtz would call it, The Power of Spite.
• Didn't See That Coming: Compress is dumbfounded when he learns that Doof is a minor villain, Nezu hired him in spite of his villain status, and that Doof wants to hire him.
• Didn't Think This Through: Mei's creation of Penny is seen as crossing a line even a Mad Scientist like Heinz would balk at - the idea of creating what amounts to new life for what amounts to a petty demonstration of her talents horrifies everyone, especially Mei herself once she realizes exactly what she has done and the fact she has basically become a single mother in the blink of an eye, with all the responsibilities this entails.
• Domestic Abuse: Yuu Gozen has been suffering physical abuse from her biological father and later neglected by her foster parents.
• Eldritch Abomination: During the testing of Anti-Warp Tech, both Doof and Power Loader encounter Schreiender Zeuge Vielegesichter! or in English The Screaming Witness of Many Faces.
• Entertainingly Wrong: Several of Doof's students believe he's an ex-vigilante when his answers for why is he only teaching High School Science when he could do so much better is because he hates taking orders and Nezu gives him a lot of freedom to do what he wants. It gets reinforced when he declares he hates working for the US Government in spite of being friends with one of their agents (Perry the Platypus). Of course, his students are never going to consider he was a petty villain from another dimension.
• Even Evil Has Standards:
  • Doofenshmirtz distinguishes between "villainy", or what he describes as his often petty revenge plans, and "atrocity", crimes against humanity that causes enormous suffering. It becomes deconstructed when it becomes clear that Doofenshmirtz is just a petty deluded weirdo capable of far more good than he realizes. ie, his having so many standards means he isn't actually evil. He finds Nazis particularly loathsome, and one of the first issues he mentions with the MHA world's loss of its history is that the children can't learn the way such monsters are made.
  • Even All for One thinks the area of politics is too disgusting to get involved in. He finds anti-Quirk bigotry and persecution to be appalling. He's also never indulged in cannibalism.
  • Even though Doof despises his brother Roger, he still votes for Roger in elections since Roger is genuinely good at his job and has good social programs.
• Everyone Has Standards: Doof has a good number of standards and lines he won't cross, which is one of the signs that he's not really as "Evil" as he likes to think he is.
  • Rather than being Distracted by the Sexy by Midnight's outfit, he's rather horrified and disturbed that someone dressed like her is teaching.
  • While he pursues a lot of schemes out of spite, he won't involve innocent bystanders in those schemes.
  • He's not happy when he realizes how deliberately shoddy Ectoplasm's Artificial Limbs are.
  • Despite his love of science, he opposes the creation of general artificial intelligence because of the ethical problems of creating metacognitive intelligence. He rakes Mei over the coals for creating Penny and not bothering to offer care to what amounts to a complete sophont.
• Exact Words: After Doof kidnaps Endeavour, Tsukauchi asks him if he knows where he is. Since he doesn't know where his subordinates placed him after the fact, Doof is able to honestly answer due to how non-specific the question is.
• Failed a Spot Check: Yuu Gozen has obvious signs of self-harm and the other tell-tale signs of abuse, and the fact the majority of UA's teachers missed the red flags infuriates Hound Dog and Nezu.
• Family-Values Villain: Doofenshmirtz tells off Midnight for wearing such a provocative outfit in front of children (and on the same line, is furious Hagakure is left to walk around virtually naked and immediately gives her his coat and later gives her invisible clothes), castigates others for swearing, and despite being a dimension away, still sends his daughter Vanessa goodnight texts.
• Fan Disservice: While Midnight's outfit is supposed to be sensual, Heinz is repulsed that she chooses to wear that while teaching impressionable youths. Later on, Vanessa goes on a long rant about all the ways the costume overcompensates at being sexy.
• Fantastic Drug: Doof works out that blood works this way for Himiko. With Drusselstein having some variant of the same problems as Yharnam with alien blood, he has some degree of understanding of the issue, but is still thinking on how best help her with it. It's not helped, though, that said Alien Blood issues induced a bit of Fantastic Racism in Drusselstein towards blood-based sciences, which makes it very hard for Doof to actually help Toga.
• Feel No Pain:
  • Yuu's Quirk heavily reduces her sensory input to the point she routinely indulges in Self-Harm, since her Quirk is unable to dim the sensation of self-inflicted pain, just to feel something. This changes once she meets Doof and she starts working on manipulating her Quirk.
  • Doof has a minor variant of this- his arms are synthetic, but he created them to be able to feel pain. However, should they get severed, they stop broadcasting, so losing an arm doesn't result in the equivalent level of pain that a fully organic limb would.
• The Fettered: As a predator, Nezu is vicious and takes great pleasure in horrible actions, but has an extremely strong moral code, which ensures he will only satisfy these cravings with either people he fully knows deserve it or via actions such as pranks that, despite being very irritating, inflict no actual damage.
• Foreign Queasine: In one chapter, Doofenshmirtz is left with some free time and asks Lunch Rush for permission to use the kitchens for some Drusselstenian cooking. While most of it isn't too different from what can be found in the cultures of Northern and Eastern Europe, a common source of meat turns out be bats, due to Drusselstein suffering a massive infestation sometime before Heinz was born. As a result, the Drusselsteinians view bats the way other countries view chicken.
• For Science!: For all his wacky villain ways, Doofenshmirtz genuinely values science, education, and learning as valuable things necessary to advance civilization. He is aghast that U.A. only teaches science as an elective, is dismayed by the willingness of the MHA world to censor and suppress scientific discoveries, and is seriously offended when Aizawa belittles Doof's scientific accomplishments. He directs his brand of Petty Evil toward a company that was deliberately making shoddy products, particularly given they are supposed to be high-quality prostheses.
• Freak Out: Detective Tsukauchi has one when Doofenshmirtz, introducing himself via a song and dance number, makes a number of increasingly ridiculous claims... and his Quirk keeps confirming them all.
• Friendly Enemy: Perry to Doof, to the point that he reluctantly agrees to be downgraded to what basically amounts to "minor annoyance" by the OWCA as long as Perry stays in frequent touch as his parole officer.
• Future Imperfect: The Quirk wars were so destructive as to make much of the Earth's history before the early 20th century obscure.
• Gambit Pileup: After Heinz blows the lid on I-Island's true state, several villain groups make near-simultaneous attacks on the island, constantly smashing into each other.
• Gilded Cage:
  • I-Island may look like a dream come true for researchers to freely pursue scientific endeavours, but it's really a fancy prison that actually stifles scientific advancement by corralling smart minds into one place where they can all be contained. Later testimonies reveals it wasn't even that nice to begin with.
  • In a different sense, when Doof starts making personalized traps for his students, Yuu finds hers so comfortable she decides to take her time in leaving.
• A God Am I: All for One has a strong-enough God-complex he substitutes the "God" in "God Dammit" for "Me".
• Gossip Evolution: The many people who interact with Doof keep imagining what kind of person he really was and how he ended up in U.A., each working up different backgrounds depending on how they interacted. The strange part is that for the most part he never bothers to lie, but whatever he says is taken as a half-truth that somehow complicates the theories even more.
• Government Conspiracy:
  • Heinz quickly realizes something's wrong when investigating about metamaterials and realizes how pitifully little factual data is revealed about them, half the report being written in adjectives and superlatives and the other half in Star Wars Shout Outs, with no actual numbers or data to back it up. Similarly, when Doof recreates Wikipedia, they try to take it down without success.
  • Heinz learns from Ectoplasm that all Heroes in Japan are forbidden by the Hero Commission from talking about the death and injury rates of heroes so that they can keep getting new recruits, which disgusts him since the kids dreaming of becoming heroes are not making the informed choices they could. Similarly, they make it hard for Nezu to make positive changes at his school.
• Harmless Villain: Tsukauchi lampshades this about Doofenshmirtz, seeing his claims about being evil as being the only thing he's lying about.
• Hate at First Sight:
  • Chase and Norm, whose radically different comprehension of Doofenshmirtz makes them deadly enemies. Chase chooses to see only the genius, while Norm sees him more like a flawed man.
  • Aizawa loathes Doofenshmirtz before even meeting him, due to his unusual (for the MHA world) mindset and outside-the-box thinking on ways to help engage with students making the former look like he never really tried to connect with his students. Doof reciprocates because in his opinion, Aizawa is a shit teacher at best and at worst, actively harmful to his students.
• Heart Is an Awesome Power: Doof's Backstory-Inator, which pulls the most painful memory from the target's mind and displays it as a hologram. The act of having its mind read and a key link to its past displayed defeats Kurogiri by awakening the dormant Loud Cloud.
• Hidden Depths: Chase, the new robot Doof built in U.A., is exceptionally rigid in his thought patterns and thinks along the lines of a Warhammer 40,000 Machine Spirit (he's basically a devout Mechanicus follower who regards Doofenshmirtz as the Omnissiah), while he can only speak in Totally Radical slang. He also detests Norm for his less rigid ways of thinking, and tries to ignore or destroy him when they are forced to interact.
• Hope Is Scary: When Shinsou gets the news he passed UA's Hero Entrance Exams and made it into the Hero Course, he first thinks someone made a mistake and tries to ask the faculty to correct it. Instead they affirm it and a confused Shinsou thinks the whole thing is nothing but a dream waiting to turn into a nightmare.
• Identical Stranger: Nezu notes how physically similar Doofenshmirtz is to Destro. Funnily enough, Dan Povenmire, Doof's creator, has noted the same thing in a video, referring to Re-Destro as "a buff Doofenshmirtz."
  • According to Perry, Re-Destro is MHA-verse's Roger Doofenshmirtz.
• Inexplicably Awesome: In-Universe, Doofenshmirtz wows the staff and students of U.A. with inventions ranging from a healing device to an artificial intelligence built practically overnight.
• Insistent Terminology: As in the source material, Doofenshmirtz adds the term "Inator" to all his inventions, no matter how clumsy it sounds.
• Internal Reveal:
  • Masaru learns about his son's bullying, with his main victim being Izuku, in Chapter 6.
  • Power Loader learns Doof is from another dimension in Chapter 7.
  • Oboro learns Doof is the man behind the revival of Wikipedia and the creation of the Broken Echo in Chapter 11.
• Irony: Doofenshmirtz, the self-proclaimed bad guy who denies being good, is a far better teacher to his students than some of the good guys.
• Jerkass Has a Point: When Aizawa says he dislikes Doof and thinks that he should stick to more traditional methods of teaching, his colleagues point out that they work for Nezu and should trust his judgement... only for Aizawa to point out that the mammal in question is certifiably insane, creating trap hallways, labyrinths to run students through, and proposed turning UA into a giant flying fortress with a plutonium bomb self destruct. When his colleagues point out that Nezu isn't human and shouldn't be judged that way, Aizawa points out that since Nezu is principal of a major school, he should actually be judged more harshly for his failings, not less.
• Let Me Get This Straight...: Gentle tries to summarise Doof's shocking job offer for him and La Brava this way to see if he gets it.
• Little "No": All for One has a slight meltdown when Present Mic plays Thunderstruck by AC/DC on UA's radio station, since he had spent a lot of time and resources erasing the song from the Internet to use it during his final battle with All Might.
• Locked Out of the Loop: Yagi Toshinori is invited by Nezu to visit Doofenshmirtz to see if his regenerator Inator can help him recover from the massive wounds he's living with. While Doof is sympathetic, he's hesitant to use the device, since he feels he might just make up a sob story and leave once he's healed. Nezu, barely restraining laughter, passes Yagi as a future teacher's aide.
• Logical Latecomer: While "logical" isn't the correct term to describe Doof, he points out several issues with the MHA world, like its stifling of innovation, its ignorance of pre-Quirk history, and how the hero school system is failing the emotional and psychological needs of its children.
• Logical Weakness: All For One admits in his own mind that one of the few things that could kill him were nuclear weapons, not because of any special properties, but because they're nuclear weapons. He also points out that most things will die within two hits of an All-Might-power-level-punch, which is why he admits to enjoying doing so.
• Mad Scientist: Dr. Heinz Doofenshmirtz, as in canon. Nezu quickly realizes that he's less "Evil" and more "eccentric".
• Mad Scientist's Beautiful Daughter: Vanessa, as in canon. Several characters, especially Midnight, note how attractive she is, and Mineta is practically salivating when she visits 1-A, much to Doofernshmirtz annoyance.
  Doof: Don't even think about it!
• Magically-Binding Contract: When contacted by All for One to heal him, Doof agrees on the condition both sign a proper contract for the protection of both parties. Via Charlene, he contacts Rodin, who promptly sends both of them the document. The elder villain describes the sensation of signing it as feeling it sink into his very soul.
• Mind Control: Dr Doof brings his mind-control font to Nezu's world. They use it to take control of Curious and stop her from covering for a subsidiary of Feel Good.
• Minor Crime Reveals Major Plot: Doof wanting to retaliate against a Support company for giving Ectoplasm shoddy prosthetics at inflated prices results in him and Nezu uncovering the Neo-Meta Liberation Army.
• Mood Whiplash: After a dramatic interview in which I-Island is skewered in damning testimony by several of their own resident scientists, Doof segues into a rant wondering if cereal counts as soup.
• Muggles: There are plenty of Quirkless in the My Hero Academia setting, but even by those standards, Doof is particularly Quirkless because he doesn't even have any Quirk Factor strands that a typical Quirkless of the setting have. Which is, of course, because Quirks do not exist on Doof's Earth, not that anyone but a select few know about that.
• Mysterious Past: Dr. Doofenshmirtz, according to everyone except Nezu and a few others. The fact that someone with his brilliance, skills and experience has somehow managed to fly under the radar his entire life baffles everyone who hears about it. Theories range from ex-Villain, to ex-Vigilante, to some sort of secret government operative for the U.S.
• Named by the Adaptation: Eri's family who all weren't named in canon are given names here. Her Grandfather is named Kenjiro Tsuda, who is also Overhaul's voice actor. Consequently, her Mother is named Seiran Tsuda, and her deceased Father is named Takayuki Kobayashi.
• No OSHA Compliance: The work environments for the scientists of I-Island have bad safety measures. Deaths and dismemberment have happened and the higher-ups don't fix it and blame the victims. Hell, it turns out that the island itself is mostly iron.
• No Plans, No Prototype, No Backup: Subverted. Doofenshmirtz's inventions are prototypes...but even the prototypes are incredibly effective at their tasks, since he refuses to even start to build his Inators unless he has finished and tested all the maths and physics to exhaustion first, a habit that he started when he needed to save money when he was younger and carried on ever since.
• No-Sell: Doof does this to Nighteye twice. First by having artificial limbs, which don't conduct Nighteye's quirk, then by somehow modifying himself so that no one can see his future after Doof accidentally spoiled the ending of a film he wanted to watch, Nighteye gets knocked out when he does make his quirk work on the man.
• Not Distracted by the Sexy: Heinz is appalled by Midnight's hero costume and continuously scolds her for wearing such inappropriate clothing around minors.
• Not Rare Over There:
  • Wanting to be a good friend to his fellow teachers, Heinz gives them birthday presents, a Lord of The Rings book collection for Cementoss and a collection of vinyl records for Ectoplasm. To him it's junk he bought at secondhand stores, to them it's an astounding collection of impossibly rare books that have been out of print and music conserved in pristine condition for centuries.
  • He also brings back Wikipedia from backups at his office, driving the Hero Commission insane with the sheer volume of pre-Quirk War information he's dumping on the Internet.
• Oblivious Guilt Slinging: During his sessions with Doof's healing device, Yagi mentions he's heard of how he's now regarded as an excellent teacher, and still pretending he is an aide for a future teacher, quietly asks for pointers. Doofenshmirtz is exasperated that U.A. has hired someone with so little teaching experience they have to crib notes from him of all people, which causes Yagi to splutter, but he gives what help he can.
• Omnidisciplinary Scientist: The heroic characters are stunned that Doofenshmirtz can develop a fusion reactor, study Quirk genetics, and build a fully sophont AI without breaking a sweat. It's even acknowledged by the doctor himself, as when interrogated by Tsukauchi about his education, he mentions that his "evil degree" includes a variety of science majors.
• Oppose What You Suffered: Doof experienced a Hilariously Abusive Childhood. Thus he takes the well-being of his charges very, very seriously and strives to help them with their psychological problems.
• Out-of-Character Alert:
  • When Doof uses an Inator on Aizawa so that he temporarily becomes more supportive, people immediately notice the difference and not knowing Doof is responsible, most are dumbfounded.
  • After Doof starts experiencing social anxiety, he checks himself over since he's the type of person who puts on large musicals to sworn enemies. Turns out that there were creatures that slipped through in the wake of the anti-warp test that were affecting his mind.
• Outside-Context Problem: One of Doof's main assets, along with his genius, is the fact that he is unaware and uncaring of the MHA Earth's status quo, and is more than happy to change or abuse it for his own ends.
• Papa Wolf:
  • Doofenshmirtz with his own daughter Vanessa in canon is a big one. It's telling that when asked what the greatest thing he ever made was, he without hesitation says that it's Vanessa, and that he could have a lab and all the money and tools in the world to work on his own projects for years, and he still wouldn't compare that to the amount of time he could spend with her. Of course, Vanessa isn't really one to need protection.
  • Additionally, the mistreatment of children in general can also make Doof really, really angry. He viciously attacks Endeavor for abusing Shoto and wants Mei Hatsume suspended when he finds out she created a robot child and never bothered to give her guidance or care. This stems from anger at his own abusive childhood.
  • Eri's Grandfather displays this when he is awakened from the coma Chisaki placed in him. He ignores his own fatigued physical condition, just so he can help retrieve his 'Little Granddaughter' from his mad former right-hand.
• Phony Degree: Subverted. Doof mentions he basically bought the Evil Science doctorate online... but only because the academic facilities in the United States refused to validate his very real studies in Europe.
• Point of Divergence:
  • Doof's involvement with U.A.'s Hero Entrance Exams results in more opportunities to earn points for people like Shinsou, which lets him be part of the Hero Course to begin with.
  • Doof recruiting Compress, Spinner and Twice prevents them from joining the League of Villains. They do once question if they would have in another universe.
  • Doof kidnapping Endeavour before Shouto goes on Internships means he is not an option for Internships and Shouto goes with a different Hero.
• Post-Mortem Conversion: The original Destro wanted Quirk freedom through peaceful means, but a manifesto leaked after his death allegedly written by him turned him into a symbol of terrorism in the name of Quirk Supremacy.
• Power Misidentification:
  • By observing the various Quirks in action, Doof realizes most of the students are glaringly wrong about what their powers actually are. Hagakure's isn't invisibility, it's light manipulation, which she has innately used to mimic her parents. Dark Shadow isn't a Quirk by itself, he's actually Fumikage's conjoined twin; their Quirks either complimented each other greatly enough to make it impossible to separate them or outright merged them. Bakugo's isn't nitroglycerin sweat, given the tremendous amount of heat the nitroglycerin reaction releases, Doof mockingly notes that if it were actual nitroglycerin, it would easily kill or at the very least blow Bakugo's hands when used. Thirteen isn't a black hole, she has Another Dimension within her she can draw matter into and expel.
  • People think Doof has a Quirk, a misconception Nezu encourages, but he has no power whatsoever, to the point that, as All for One discovers, he's actually unable to hold a Quirk.
• Pun: Doof is deeply irritated when All for One explains the origin of the "Quirk" expression: the Mother of Quirks referred to her son's abilities as a "quirk" of his.
• Reasonable Authority Figure: Nezu has been nothing but supporting to Doof since he landed in his dimension, and takes his views into strong consideration, and after realising the flaws with the current way of doing things when Doof points them out, keeps a closer eye on his teachers with an eye for improving his school.
• Redemption Promotion: Much to his annoyance, Doofenshmirtz finds more success as a teacher to heroic schoolchildren than he does as a villain.
• Related in the Adaptation: Geten and Rei are cousins in this fic, which by extension makes him a first-cousin once-removed to Rei's kids, including Shouto.
• Robot Girl: Mei creates Penny in this universe. While Doof is on some level genuinely impressed that Hatsume did so, he is much more horrified by the ethical and moral implications she never considered before making Penny, pointing out that she essentially made a baby in a robot teenager's body with a computerized mind, and now she must take responsibility for her creation and learn to raise her as a proper daughter.
• Robot Religion: Chase starts a Mechanicus Cult with UA's robots as adherents, where one of the key doctrines is that Doof, his creator, is the Archmagos and Omnissiah.
• Rule of Three: So far, Mei Hatsume has broken Heinz's trust: first, by willingly going along with Chase's upgrades and having mechadendrites implanted, and second, by creating Penny, a complete artificial sophont, without stopping to think there was a very good idea of why Heinz never once tried to do the same. Nezu has resolved that if there is a third such instance, she's out of the lab for good.
• Screw This, I'm Outta Here: One of Shigaraki's mooks (literally, the POV segment is titled "Mook") sees Doof instantly take out the Anti-All Might bioweapon and one-shot Kurogiri (and revealing that he's made of 2 people smashed together). He quickly decides that no, this isn't worth it, there's no hope of escape, so he runs at the kids, hands over his head and yelling that he surrenders. He's tied up but mentally states that he's making no move to get free.
• Shoot the Television: Tomura Shigaraki smashes the television broadcasting Heinz's destruction of Aldera Junior High, angrily thinking that someone is trying to copy him.
• Sneeze Cut:
  • When Chase derogatorily thinks about a Decay Quirk, the scene changes to Tomura sneezing.
  • When Aizawa tells Doof he thinks Vlad King is a dumbass, the scene briefly switches to Vlad King sneezing and wondering if he has a cold.
• Spanner in the Works: Doof's presence in the My Hero Academia world derails several villain plots:
  • The Meta Liberation Army gets exposed because one of their subsidiaries gave Ectoplasm shoddy prosthetics at inflated prices, and Doof wanting to retaliate on behalf of his friend results in him not just uncovering the corporate corruption, but the greater Meta Liberation Army conspiracy as well.
  • Doof helping with anti-drug trafficking efforts results in him and UA discovering Eri is a captive of Chisaki after he discreetly launched a coup against the previous leader, which results in them both rescuing Eri and healing the previous leader.
  • Doof's presence during the USJ incident results in the capture of Kurogiri and pointing Nezu in Garaki's direction, which results in him, through Chase, investigating Jakku Hospital until they gather enough evidence to storm the place, resulting in All for One losing his bio-army, putting him on the backfoot.
• Spotting the Thread: When Doof goes through the student files before they start the semester, he spots several innocuous but suspicious things:
  • He realizes the injuries on one of his students are self-harm marks rather than a consequences of her powers since her powers wouldn't leave scars on her skin.
  • He suspects something is wrong when Shoto has no noted medical records when he has a giant scar on his face.
  • Izuku's file shows him having so-so grades and being a troublemaker, but that does not match his excellent grades on the written portion of UA's Entrance Exams and what Doof saw of his behaviour.
  • He also finds Yuu's adoptive father strange precisely because he can find nothing on him - he rapidly identifies her adoptive mother as a decorator, but hollow data space around her father is so absurdly suspicious he makes it a point to check on him more closely.
• Stating the Simple Solution: When asked if he can do anything for Eri, he suggests that she practice her powers on plants, which can be reduced to nothing by her powers and no one would care. He also suggests gloves made of synthetics, as her powers only work on living things.
• Stunned Silence:
  • When Nezu calls the Prime Minister of Japan, the latter is stunned speechless when Nezu reveals he and his staff uncovered massive loads of information on the Meta Liberation Army.
  • Heinz can barely articulate his shock after All for One explains the sheer horror of the Quirk Wars.
• Sucky School: While U.A. is more or less competent at churning out heroes, Doofenshmirtz notes it is terrible at creating functional human beings since shaping students' mental and psychological development is not a priority of the staff. And that's on top of its lack of history or general science education. Nezu isn't blind to the issues, but the Hero Commission makes actually implementing changes difficult.
• Survivorship Bias: This fallacy is the key reason why before Doof came along, not one bothered trying to fix the systemic societal flaws Doof points out, if they notice it at all. Society as a whole focus on the few people that benefit from their flawed institutions and ignore, or worse, don't notice everyone society fails.
• The Swear Jar: A variant. If Doof's students can keep the amounts of swears to under 100 for the semester, he has promised to treat them to a fancy dinner.
• Take That!: Doofenshmirtz thinks Dr Ujiko Daruma was mostly right about how he tried to research Quirks, but thinks that the part about Quirks eventually becoming too much for the body makes no sense whatsoever.
• Technician Versus Performer: The conflict between Aizawa and Doofenshmirtz is over how to impart knowledge to the students of U.A.
  • Aizawa is the Technician: he focuses on the guidelines set by the higher-ups on molding students into the next generation of heroes, focusing mainly on their strength and willingness to charge into battle while ignoring their mental health.
  • Having no teaching degree, Doofenshmirtz is the Performer: he tries to broaden the students' skill set, both in science and in tactics, while also taking time to improve their psychological development.
• They Called Me Mad!: Doofenshmirtz starts his research on the Quirk genome by checking past attempts at explaining it, quickly finding that one scientist proposed a fairly solid base, but was dismissed because his theories would frame Quirks in an undesirable way. No stranger to being called a lunatic, Doof tests the ideas and finds them solid enough to base his own research on them.
• The Thing That Would Not Leave: Heinz indulges in a form of this with Mr. Compress. After foiling a robbery by Compress, Heinz takes to visiting him at any hour he pleases to rant about the latest target of his ire. Compress is mostly perplexed about this, but reluctantly allows it, letting him know Heinz better until he offers him a job in the new organization he is creating.
• Totally Radical: Chase talks like this when interacting with humans, as a result of Doof's character design method of "Stick a bunch of traits on paper, shove in hat, pull out traits." Perry is later revealed to have sabotaged this method, to Doof's ire.
• Tranquil Fury: When Shoto visits Doofenshmirtz to talk about his family issues, Heinz is jovial at first until Shoto explains how horrendously abusive his father is. Then his voice becomes chillingly flat and leaves his lab with very little preamble. He then brutally kidnaps Endeavor, giving him a Groin Attack with steel-toed boots, and seals him in a stasis coffin. When Perry visits, he finds Doof all but demolishing his gym equipment in rage, displaying violence he never used against him.
• Transhuman: For the lack of a better term. Heinz's AIs are all of the strong variety, but even beyond that, he makes it a point to explain the difference between sapience, sentience and sophonce, involving increasing levels of metacognition and learning ability. He makes it a point to never make anything capable of sophonce, because by that point the technology is fundamentally indistinguishable from a human mind, and that kind of power terrifies him. Mei realizes how grievous this is and why he sticks to lesser intelligences like Norm and Chase when he apologizes for not teaching her the kind of responsibility this entails after she makes Penny in a childish, spiteful attempt to impress him.
• Trap Master: Doof makes a point to first teach his students the basics of lockpicking, which he views as a valuable skill in general, and afterwards, he begins setting traps to ensnare them as soon as they take their seats, to help them practice in a safe environment that nevertheless is as close as possible to an actual threatening situation so whenever they end in actual danger, they can treat it calmly and rationally and escape more easily.
• Trash Talk: Vanessa mercilessly mocks Midnight's costume, highlighting how it makes no real sense even from an aesthetic point of view, and rather than titillating, it makes her look ridiculous. It really doesn't help that Midnight was also talking down to her prior to that and disparaging her father. Charlene shares her daughter's disdain, mocking the costume as "a war crime."
• Two Beings, One Body: After Doof's Traumatic Backstory-inator scans Kurogiri's composite mind, four different backgrounds are shown, though only Loud Cloud and a fainter presence called Pinpoint are strong enough to manifest as voices.
• Ugly Guy, Hot Wife: "Ugly" is probably a little much, but unlike canon where it's not really commented on, Charlene is shown as a complete bombshell while Heinz isn't exactly conventionally attractive.
• Unreliable Narrator: When All for One describes Yoichi betraying him and the next wielders of One for All tainting his brother, he leaves out the part where All for One psychologically tortured Yoichi and kept him prisoner for decades.
• Unskilled, but Strong: Defied. Doofenshmirtz forces his students not to use their Quirks because their overreliance on their powers weakens their combat abilities and prevents them from building up any other skillset.
• Unwanted Rescue: All for One has decided he finds Doof's genius so impressive, he is going to find a way to preserve him from death even if he doesn't want a Quirk himself, feeling his loss would be far too much of a tragedy to ever contemplate.
• Villains Out Shopping: When lounging aboard the Broken Echo, La Brava, Gentle and Mr. Compress end up bawling when watching Bambi.
• Wham Episode: In Chapter 14, Doof rants about his problems with I-Island, which results in David calling in to confirm those problems exist and add more details, which gets the ball rolling on the scientists airing every grievance they have, blowing the whole thing wide open.
• What Is Evil?: Vanessa has a chat with her father and gently guides him to the realization that he isn't really evil for all he thinks he is; at most, he's a petty jerk who was victimized to the point of internalizing that any attempt at fulfilling his rather meager desires constituted evil.
• What the Hell, Hero?:
  • Hound Dog calls out his colleagues for missing all the red flags that Yuu Gozen has been abused for the entire year they had her as a student.
  • Recovery Girl gives one of these to Doof when she hears he used untested healing tech on Yagi without consulting his primary care physician. Doof promises to include her in its usage next time, while Recovery Girl accepts, realizing that Doof is overeager rather than malicious.
  • Subverted when Doof talks to Mineta. Instead of calling him out utterly on his perversions, Doof calmly explains that that sort of behavior isn't conducive to heroic life, and that instead of chasing for quick thrills, he can find a much richer future by taking it slow and finding someone special.
  • Also subverted when Masaru Bakugo visits UA with his son and is informed of the toxic atmosphere at Aldera, and realizing, from his son's own mouth, that Katsuki desperately needs psychological help, seeing he has routinely bullied Izuku for a prolonged period of time. Masaru immediately sends Katsuki to UA's gym to release some steam while he takes a long, painful walk, understanding he cannot be angry at Katsuki nor should be allowed to drive while he is so horrendously mad.
• Why Did It Have to Be Snakes?:
  • While he finds the circumstances of her case appalling, Doof is still hesitant to interact at all with Toga, knowing full well she has reached a level of addiction to blood even hardened Drusselstein natives would have taken a decade more to reach. As much as he wishes he could help her, he's terrified of visiting her, and when he does so at others' prompting, he lasts less than five minutes before beating feet.
  • Strangely, Re-Destro has the exact same attitude towards Heinz, reluctantly approving Geten to go talk with him and see if he can be convinced to help the Meta-Liberation Army.
• The World Is Not Ready: The excuse the I-Island authorities use to can any projects they deem too disruptive into the depths of the Vault.
• Worthy Opponent: Chase, upon seeing Perry risk life and limb to allow him and several I-Island scientists to leave the sinking island and go back to save more, can't help but be genuinely impressed with him and salutes him as his creator's greatest enemy.

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