E-class

I kinda like the idea that maybe e class could be similar to Shinso's case. So just like Shinso they didn't quite make the cut for hero's so they're down upon (they already are but you know) and their strengths are unnoticed

So one day a 'villain' (you really can't deny that Koro~Sensei wanted himself to look like the villain) and said he wanted to teach the kids to become strong hero's before they graduate but the catch is his quirk can destroy the earth so if the kids don't become strong enough hero's to defeat him then he will destroy the earth.

So Irina and Karasuma are 2 strong trained pro hero's that train the kids to help. And along the way they are being bullied by the hero course students (a-d classes)

The the tests in the assassination classroom world, in this au the tests are the same as the entrence exam in bnha and the finals are the sports festival.

E classes quirks

Karasuma

His quirk allows him to be incredibly strong which is why he is able to be part of the ministry of defence (if you don't know a ministry of defence basically protects the governent)

Weakness: none

Drawback: having grew strength can cause him to get cramps easily

Irina

Her quirk is seduction

She can seduce anyone that has some sort of sexual attraction to woman by them looking at her body figure

Weakness: her quirk doesn't work when she wears baggy clothes

Drawback: doesn't work on people that don't sexually like females (so gay men, aromantic, asexual, and if she doesn't have a emotional bond with said person, demisexuals. And more sexualities that I sadly don't know)

Koro~sensei

He would probably be born quirkless but from the testings he got 2 a quirk

1. Octopus: he has mucus like a octopus, tentacles like one and the skin of one (that became yellow cause of the testing)

2. Flights Speed: this speaks for itself, he is really fast when he flies

Drawback: his tentacles are too squishy to cause harm

Weakness: same as the assassination Classroom.

Karma akabane

His name is the same as his quirk

Karma: it's kinda obvious, he can bring bad luck to anyone around him

Drawback: he is no exception, he also gets bad luck but not as bad as likes others (as seen in koro q but his bad luck is minor compared to what his quirk gives other people)

Weakness: he's cocky and when he's cocky he screws up

Yuma Isogai

Charm: he can charm anyone (that likes guys) that looks at his handsome face

Drawback: straight man tend to hate him (I.e Okajima)

Weakness: same as irina's but instead of his body (he's a minor) it's his face and with sexuality it's the same thing

Okajima

He can summon porn magazine at his will (hey I said quirks I never said good quirks)

Weakness: none, he enjoys everything about his quirk

Drawback: his parents are disappointed in him and most of the time he gets banned from places

Okano

Flexibility

She is extremely flexible.

So her quirk gives her strong muscles and good ligaments

Weakness: she can get stiff at times

Drawback: none

Okuda

She can produce any chemical she wants

This happens from food becoming atoms and molecules in her body so the more she eats the more chemicals she can make

Weakness: doing this takes up stamina

Drawback: harmful chemicals can hurt her

Megu

She can shapeshift into a boy version of herself

(It was explained before that she boy counterparts and sometimes gets mistakes for a boy)

Weakness: none

Drawback: it kinda becomes awkward in between her legs

Kaede

At the start she tricked everyone to think she was the first quirkless person in ua but actually she infected herself and her quirk became tentacles

Kinda like Koro~sensei's octopus quirk but less strong and it only have her tentacles instead of the whole octopus look

But her official quirk before she got the tentacles was she could control her emotions (literally) so if she wanted to feel sad she could and other stuff

This helped with her acting career

Yukiko

Her quirk allow her to shoot perfectly

How this works is her eye works like a aim (like you see in snipers and stuff) to help her aim exactly where she wants

Weakness: if she can't see then no dice

Drawback: this doesn't promise the perfect aim but with training it helps her get the perfect aim.

Muramatsu

He can see the perfect recipe for different foods (he prefers noodles tho) by looking at them

Weakness: none

Drawback: none

Kurahashi

she can talk to bugs and bugs can help her fight

Kinda like Koda's but she doesn't need to scream

Nagisa shiota

He can summon a snake at will, he can order the snake around and the snake will always listen to him

Drawback: when Nagisa isn't ordering the snake around the snake has free will

Weakness: none

Sosuke

Whatever he draws he can bring to life

Weakness: there is a limit to how long the drawing lasts and it depends on how detailed the drawing is. And he can make things that are alive but just like clones (yes scientists have made clones but the clones don't live long) they don't live long (about 2-3 days)

Drawback: he can make food but they don't taste like anything

Sugino

He can summom baseball equipment at will

So that would be, baseball bats, baseballs, helmets, etc

Weakness: does this takes up stamina

Drawback: none

Takebayashi

Because his family own a hospital he has a healing quirk

As long as he outs his hand on whatever needs healing he can heal it

Weakness: this takes up his stamina and depending on how big the wound is it takes a couple of seconds to heal depending on how much cells were hurt from the wound so a paper cut would take like 1 second but a knife bash would take 5 seconds cause it may be long but it didn't destroy much sells but multiple stab wounds (that hurt more cells cause it's deeper) would take 30 seconds

Drawback: none

Chiba

He can summon a gun from his finger tips

Weakess: none

Drawback: none

Terasaka

His strength can increase depending on how angry he is, the more anger he is the more stronger he is but if he's in a good mood he is keep to his average strength (which is still pretty strong)

Weakness: cramps

Nakamura

She's like a human autocorrect but more in her head

She can autocorrect things in her head so she knows the spelling of everything

Weakness: incorrect spelling

Drawback: if the word is no where close to its spelling then she can't autorrcorrect it

Kirara

She can turn words into real life

So it she wrote down elephant then she can make a elephant in real life. They don't last long and it depends on how well she can read the word

Weakness: bad handwriting

Drawback: if she can't read the word then her quirk doesn't work

Hayami

She can summon a gun

So like Chiba but instead of it being on her finger she can just summon a gun

Weakness: this wastes stamina

Drawback: she can only make one gun at a time

Hara

Same as fatgums but she can't obsorb energy like he can

Fuwa

She can turn a manga page into a reality

So If she wanted a manga moment to happen between people in real life she can

For example, if in a manga page someone danced, she can make a villain dance cause a character in the manga did that

Drawback: she needs the manga page to be open for that to happen

Weakness: if she can't see the person in real life and the manga page then she can't use her quirk

Maehara

He can charm anyone that likes guys by flirting with them.

Weakness: the person needs to hear the flirt for it to work and they need to be romantically into guys

Drawback: none

Kimura

He can really fast

Kinda like Iida but instead of using engines to run his body can convert food into power and energy.

Weakness: he needs food to run, so if he didn't eat food that day he can't use his quirk

Drawback: none

Yada

Her quirk is lesbain-

Jk jk (it is canon she's a lesbian tho and and likes kanzaki)

Her quirk is the same as Irina but more weaker due to less training

Yoshida

He can summon a motorbike at will

Weakness: he needs to know the gears to summon one

Drawback: it takes up his stamina and the energy in the motorbike is the energy from the food his body converted into energy that day

Ritsu

She's a robot that's her quirk

She's basically connected to all electricity, wires and stuff

Weakness: she can be hacked and even tho she herself is waterproof if the citrus she's trying to connect to are fried she can't get through

Itona

The tentacle quirk came from the injection

So his actual quirk was he could summon electronic things like cars and phones

Weakness: he needs stamina to do this

Drawback: he needs to know what the electronic is built out of to summon it

Other

Gakushuu (cause he's the only one in a class that we care about)

His quirk is that he's really intelligent

This makes him have a good, reaction time, he can process things quicker, and other stuff

Weakness: none

Drawback: none

(Cause he's 'perfect')

Principal

Same as Gakushuu's but stronger from more training

Aguri

She can see past people's facade

So she can see how someone truly feels by touching them.

Drawback: she needs to touch the person to see how they really feel

Weakness: none

Ideas for y/n's quirk cause you all probably have friends and don't think of stuff like this at 3am

In  Bnha your quirk can reflect on your emotions, hobbies, habits, etc so if you want to think about your own to take your oc's personality and hobbies into account

And also the meaning of your oc's name can reflect your quirk

Crystals

You can produce crystals from your body and they are a create attack and defence

Weakness: it takes up Stamina to do this

Drawback: none

This could be used it your oc has a love for shiny things

Sugar rush

Your IQ can increase based on how much sweets you eat

The sugar in sweets would convert into IQ and make you smarter, of course you would have a good IQ from learning but the candy increases it and when you sleep the IQ goes back down to your original IQ for you to increase all over again

Weakness: none

Drawback: when you fall asleep your IQ goes back to how it originally is and different sweets can increase your IQ depending on how much sugar is in the sweet.

This can work if your oc was in A class before and/or has a sweet tooth

Manifest

Same as Tamaki's

This could work if your oc is shy and has social anxiety like Tamaki

Demon

Basically a demon

This could be if your oc is mischiefiest

But then I guess that could be Karma's but eh on well

Angel

You would have angel wings and a halo

This would work if your oc is the opposite or Karma and it's heavily emplied they are the opposite of him

Gravity

Pretty much the same as Uraraka

This would work if your oc is a bit of a airhead

Puppeteer

You can control anyone by touching them

This could work If your oc is a hit like Asano and maybe like a leader that makes the plans and pulls the strings

Fire

You can produce fire

This would work if your oc is a hot head maybe had a similar to backstory to Shoto (then again you would have half and half if you did have a similar backstory to him)

These are just some ideas if you can't think of any