Random Quirk Headcanons

Random Quirk Headcanons

Eraser is a mental quirk (stolen) believes quirk is gone and believes you can’t access it, not that it actually is gone. (Also implies that Shinsou’s brainwashing could probably get around it) Explains headaches and lowkey insomnia, both of which are mental quirk side effects.!

Midoriya wasn’t burned from Bakugo’s explosions because of either a: he got some fire resistant properties from his father, or b: he found burn cream with regeneration quirk properties Explains: no scars from Bakugo without using makeup

All For One’s quirk is touch based, and does this thing where it goes into the genes and copies the Quirk Gene, but in doing so destroys it. this is added to his chromosomes, which have been built to have a set number of quirk factors. (which is why sometimes he switches good quirks for bad ones, or makes so many Nomus) However doing so to a Quirkless Kid does nothing except cause pain because the quirk is searching through DNA for something that doesn’t exist. Giving a quirk to a quirkless kid causes brain deformation because their brains aren’t adapted to a quirk, and the quirk gene spot is occupied. Explains: how AFO works

OFA adds a similar structure that AFO has and so it must freely be given or AFO won’t be able to grab it as his quirk can only effect where the quirk gene should be, not the structure that pulled the person’s quirk into and amplified and added other quirks to.

Bakugo has lower blood pressure but instead of getting medicine or anything (“I’m not weak!”) instead looks for fights for the adrenalin. also suffers recoil on shoulders from bigger blasts.

Kaminari gets his electricity from neurons and dumb mode is because he has the neuron equivalent of fuses, so him going over his limit blows one of those, which shuts down his ability to move his body, or everything except his emergency functions. It is quirk exhaustion, but if he tries to keep using his quirk, after that, it may start to damage fine motor skills/ability to feel pain and stuff. He also generates electricity, which makes him think faster, and move faster/better reflexes if he trained for it. Also why he needs move/shows symptoms of ADHD.

Kirishima: his skin cells are flooded chitin as opposed to Testutestus iron.

You know, you're scrolling your tag and you see like two ideas and you just want to smash them together? No? Well I do sometimes. So here:

Consider Izuku as a vigilante for longer than the police realize. They only have figured out in the past week or so (not the current year or two ) because Izuku basically cosplays as different underground heroes. And I'm not talking put a wig and outfit on and call it good, I'm talking wearing makeup, and indiscreet voice changer (or quirk at bottom), outfit as close as possible, with stilts or pumps heels even and contacts and wigs and mannerisms. He planned this out for months, spent hours researching different underground heroes just to get their mannerisms, fight styles, patrols and hobbies. He got so good he's fooling not only the civilians, but other pros at a distance. The only reason there was a report a new vigilante was out and about was because he literally ran into Eraserhead while cosplaying as him. So now Eraserhead is trying to find his double and Izuku is committed now to staying as Eraserhead.(He doesn't want to be caught in a different cosplay and cause more suspicion or paranoia). (Alternatively, he just focused on Eraserhead because he was the easiest to copy)

Notes on Izuku profile: Notably, there would be some changes. Considering Aizawa is 6ft ish/ 183 cm, Izuku would have to be decently tall to be close. Let's say between Shinsou's height of 177 (5'9) and Kirishima's 170 (5'6) so about 5'8-5'7 (Add 1in pumps) It's still a solid four inches, but if Izuku doesn't actually slouch as much, just gives off the appearance, or doesn't stand close to Aizawa, no one can tell. Also consider that his hair would be shaved shorter so that wigs would stay on easier. (More crew cut like, at least on the sides (think undercut?)) If you really wanted to, 3-4in pumps (but that seems clunky) Listen Izuku got really into his cosplay, of course he shaved his sides.

Effects of world around him? One, people are more confused about what Eraserhead's quirk is, because sometimes he erases quirks and sometimes he can...taze people? Move really fast? Heal overnight/in hours? (Because they switch) If USJ, Shigaraki takes longer because the underground has no clue what the cues are either

Two: UA could probably be for sixteen (not fifteen) years olds, just to make the height difference easier.

Three: On April 1st, Aizawa creates a truce and he makes the vigilante (Eraser Head or EH/Eh Rubberskull? Rubbernoggin? Pencillead? Leadtail? for short) be him instead. His friends only catch when Izuku starts skipping away. They have several seconds of bluescreening before that though.

Midoriya's possible quirk? Mimic: Whether it be just a voice thing, or expands to mannerisms and or quirk (very slightly/asthetics) (Shinso bonding or Monoma bonding?)

Or, alternatively, a minor shape-shifting quirk, not enough for permenance (does it once and it lasts for like 4hrs) and has to perfect by himself. (Or a friend who could do that to other people)

Finally, Echo: has a set of three quirks that he can echo- can activate for 3-5 seconds. Easier and longer the more time he spends in their presence, and are consciously chosen. (He can use his mom's for 20 minutes, but only because he grew up with her). (Monoma bonding?)

Other Random sidenotes:

Izuku bringing Shinsou in on it (maybe once on the day before the next April fool's, after he was caught)

"Are you sure it isn't mitosis? Because I'm staring at three Aizawas and I'm pretty sure I'm not seeing things "

If the whole class is involved:

"Guys, Aizawa multiplied. There is no class, and mini-hims are all sleeping around campus. I almost tripped over one of them on five separate occasions."

"You think that's bad? We ran out of coffee again. We bought coffee beans last week! One of them even hissed at me like Aizawa does when I tried to get my own!"

Meanwhile Aizawa: no schoolwork :)))

Random student: *traumatized* there are neon yellow catapillars everyone and Everytime I look back they've gotten closer

Other random: At least you know where they are. When I look back, they Vanish

Izuku standing next to Aizawa, both dressed as Eraserhead.

"Are you sure it isn't the shorter one?"-Mic

*Both give Mic a disappointed look*

Mimic!Izuku in 1A:

"Guys guys watch this- *changes to Aizawa voice* -Hi I'm Aizawa, I'm 30, going through my midlife crisis, sleepless and part cat and catapillar. Also I despise everything-"

Or *in Aizawa voice "*cackles* Logical Ruse!"

Consider the absolute chaos that would happen if LoV, at any time in the plotline, decide to become LUV or LoUV, League of Underfed Vigilantes. Like they just collectively decide being a villain doesn't pay well enough, so they become Vigilantes who pickpocket the thugs in the streets after stepping in. And then they also take commissions to do stupidest things that are illegal, like egging houses, glitterbombing people, vandilizing/spray painting messages, moving all the furniture an inch to the left, or replacing the mayonnaise with shampoo and vice versa. That type of thing. (Escapades where ColdSoba1 uses his dad's credit card to buy lots of pranks on Endeavor. Cue Dabi being really happy to have excuses to do pranks on him). Himiko being sent to pretend to be someone just to stir up trouble. (Can I have someone pretend to be me from the future, so they slap me after I take someone's hand and tell them that if our romance if not to be, my future self will come and slap me in the face?) Or (I want you to pretend to be my twin because I made a bluff and I can't back out now) Sometimes, they even have Kurogiri do transportation. (Please, if I don't get there in two minutes, I'll be fired!)

Random Thought:

Regarding Genderbent Sanji, I refuse to believe that she wouldn't still flirt with all the women.

Aka, Genderbent Sanji is a Lesbian

Okay I saw this on a fic where theres a group of Quirkless people but they banded together and they call themselves Baselines because Quirkless is a slur. Anyway, idk what the fic was called (it only had like two chapts) but it got me thinking

(And also the fic called Present Your Past, Heart White-Laced (Prove That You’re More Than A Sum Of Your Parts) by Otakku6337)

Anyway, so what if because Quirkless people do not have Quirks, they follow Lamark’s Evolution theory more (because people have a state where their body adjusts to their quirk and it’s affects/prepares for the quirk and its effects (like Ochako‘s fingerpads and her being better with nausea and force than most) which is why late quirks are more powerful (the body needed more time to prepare) (unless they just didnt have the right thing their quirk used (like if you eat pineapple to turn different colors, but having never eaten pineapple before) I’m getting off track.

Consider that if their body does not need to adjust to a quirk (which would also take up brain space because to the brain a quirk basically a giant new muscle) they would spend time adjusting to the environment. Their junk DNA (more than a normal person who has a quirk) and the adaptability part of the DNA which would be slowly replaced/awakened with/into functions and adaptations specific for a quirk would instead be used to create small mutations that help them survive their environment. Getting repeatedly burned? Skin adapts to become more flame resistant. Breaks bones repeatedly? Instead of just the break becoming more resistant, the entire skeletal structure starts becoming more force resistant. Gets bruises often? Blood vessels become stronger. Just like when you work out your muscles break down then are built up stronger but with more cells.

Ah the real reason I joined is that I had a plot bunny…

or many…