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All for One is this powerful villain, who is almost unstoppable because he has
and can use many quirks. Is there any reason, why they never used Eraserhead
to stop him by blocking all his quirks? Is this just a missing point in the
plot or is there any limit to Eraserhead abilities or any quirk to All for One
that makes him inmune to Eraserhead abilities?


CC BY-SA 4.0
2018-06-06T17:52:12.730
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2021-12-01T17:19:02.047
2021-12-01T17:19:02.047
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question
my-hero-academia
Could Eraserhead delete all All for One quirks at once?


This is mostly speculation, and incredibly hypothetical. With the evidence
given, All For One (A4O) by itself is an activation based or transformation
type quirk, and that activation can steal, grant/transfer quirks. However, the
quirks that are stolen may or may not be used only when A4O is activated.

Erasure, another "Activation" quirk, can disable the quirk factor of any
person caught in range. Thus those with Emitter and Transformation based
quirks are disabled, but mutant-type quirks lose their functionality.

As far was we can tell the only time Erasure was used on a person with more
than one quirk was on Deku in the skills assessment test (One For All is
considered as multi-quirk; the stockpile, and the transfer quirks). However,
since Deku only used the "superhuman strength" quirk, we don't know if there
were other quirks that have been stockpiled. Also, whether or not a person
wielding One For All can use Superhuman Strength + another quirk. This can end
in one of two ways.

Conjecture 1: If the root of all quirk based power is rooted in the quirk
factor, it is possible for Aizawa to disable A4O and all the stolen quirks
with the Erasure Quirk.

Conjecture 2: If the A4O quirk does not need to be activated to use stolen
quirks, AND stolen quirks are separate from the Quirk factor of A4O; if and
only if each quirk has its own Quirk Factor and Aizawa can disable only one
Quirk factor within one person; then A4O will not be disabled by the Erasure
Quirk.


CC BY-SA 4.0
2018-06-07T02:54:50.290
47342
2018-06-17T06:00:29.290
2018-06-17T06:00:29.290
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answer


It's not explicitly addressed, but during the police preparation before
raiding the League of Evil, they make it very clear that they will possibly
encounter All For One. Since UA knows All Might's secret, it's not a stretch
to also know about All For One.

Logically speaking, **if** Aizawa could really steal All For One's quirks, he
would be absolutely essential to the mission and there would be no reason not
to include him... Unless they know that it would not work.

Based on that, while the explanation is not provided, it seems logical that
for some hidden reason or another, UA knows that Aizawa won't be able to steal
all of All For One's quirks. My guess is that he would only be able to disable
the ability to steal other people's quirks, or maybe just one of his quirks -
but not all.


CC BY-SA 4.0
2018-08-31T10:31:23.267
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2018-08-31T10:31:23.267
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Aizawa’s ‘erasure’ quirk works by temporarily disrupting/disabling a person’s
quirk factor. With this in mind, there are two possibilities:

  1. All For One’s (from now on I’m calling him ‘The Big Boss’ to avoid confusion between his name and quirk) entire arsenal of quirks could become useless if the quirk factor of All For One controls everything.

  2. If The Big Boss got the quirk factors for each quirk (which seems like the more likely scenario in my opinion), it wouldn’t matter if Aizawa ‘erases’ All For One as The Big Boss would still have dozens, maybe even hundreds of other quirks at his disposal and it would turn into a game of ‘how many quirks can you disable before you have to blink’.

Aizawa is a great hero, but he specialises in close range combat against
people who can’t use their quirks. If scenario 2 is correct then Aizawa stands
no chance against The Big Boss in a 1v1 however he could be quite useful in an
assist role if someone like All Might or Endeavour were also fighting him, he
could disable certain quirks before The Big Boss could do any serious damage
and maybe slow him down somewhat by restraining/distracting him with his
scarf.


CC BY-SA 4.0
2018-09-09T06:32:14.020
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2018-09-09T06:53:57.603
2018-09-09T06:53:57.603
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According to the anime all for one is a quirk that can take and use quirks,
and give them. It also says that it is a storage quirk so it means all of all
for one's quirks are within his all for one quirk. There for Aizawa can erase
all for one's all for one quirk, and all of all for one's other quirks with
it.


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2019-12-16T03:40:00.067
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2019-12-16T03:40:00.067
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Erasure can erase multiple quirks at once as seen by his ability to shut off
the quirks of High End Nomus who have multiple quirks (Ch 268, Boku no Hero
Academia manga). The reason Aizawa was not present for the fight against AFO
was because he was in a press conference to speak about Bakugou’s kidnapping
(Boku no Hero Academia S3E9). They arranged the press conference to distract
the villains and if Aizawa was not present during the press conference after
having a student from his class kidnapped, it would look bad for UA. If they
did not hold the press conference the LoV may not have been so unguarded. For
a meta reason it would be convenient for the author but it is explained well
in the series. Also they have to account for the possibility that AFO may have
a quirk that can render Erasure useless like cloaking or something. This might
allow him to steal Erasure which would be devastating for the heroes.


CC BY-SA 4.0
2020-05-21T17:46:34.473
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2020-05-21T17:46:34.473
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I am not sure this is correct but I think it’s because he could erase his
quirks but not his strength. The fact that all for one did not die from all
mights final attack means he is basically invincible. His defense is super
strong why do you think his physical strength is not as strong. And he was
probably helping the people get as far away as they can. And his quirk has a
draw back when he blinks there quirk comes back.


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2021-02-19T00:36:10.743
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2021-02-19T00:36:10.743
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