Quirks or even elements of quirks can be classified according to strength as follows:
Detrimental- directly harms or inhibits the user. Quirks commonly have at least one detrimental aspect acting as a limiter.
Vestigial- pretty much useless, or only affects appearance in a non-functional way.
Utility- Quirk has a range of applications.
Weapon- Quirk has an inherent danger to it, or raises the inherent danger level of the user.
Epic- Innately dangerous or uncounterable. A reincarnation/high healing factor on the level of Wolverine could be considered Epic without being directly weaponizable.
While not directly related to the Quirk Strength, a hero can be classified from F rank to S rank based on a combination of their Quirk Strength and how well they are used. I'd like to call this an Operator Level. As a prime example, consider Mirio Togata of the Big Three recently introduced in the anime. By my reckoning, his phasing Quirk is just a Utility, but his application and precision in using it puts him into upper A if not S rank operator. For another example, there is Uraraka, who also has a Utility Quirk and showed her skill in using it against Bakugou. On the other end of the scale could be All Might, who due to injury, has stepped back in Operator Level due to the time limit incurred.
As far as other ways to classify Quirks, look no further than Brandon Sanderson's Reckoners trilogy, which is also a superpowered society. Want to read a story of unpowered people fighting against a Superpower Apocalypse? Steelheart starts it, and go read it. I mean, if you can read that, and you can read my stuff, by all means, read Sanderson's stuff.
Anyways, linked to that is the term "prime invincibility," which is basically a trait that makes someone effectively immortal. Like reincarnation, extreme healing factors, shields, and invulnerability. I'd like to borrow this term.
Also something I am borrowing from the Reckoners is that everything has a weakness. Something that depowers someone, or otherwise can nullify them. All Might has a time limit, Deku has a power cap or he destroys himself, Iida overheats, Uraraka gets sick, Epstein didn't kill himself, Kaminari short circuits, stuff like that. Kai has a couple of weaknesses that are covered in the prologue, but I'll explain that more viscerally when it comes time for it.
More on Quirks:
It is a confirmed though unacknowledged phenomenon in canon that there is a lot of instinctive knowledge that comes with having a Quirk. Take Toga (drinks blood for shapeshift creepy girl) or Stain for example. Without instincts driving them to consume blood, they would have gone through life thinking they were Quirkless. Clearly, procedures that come with activation of a Quirk are ingrained into the user.
Obviously, that is a little different for Deku, who has to figure things out. Things aren't as natural for him. And One for All is a unique Quirk to begin with.
Well, I'm sure I'll cover some of these within the story, but I wanted to get this into a convenient place for people that want it.
Well, that's it for a little while. Mull this over while I get a couple of chapters in order for a real release. Of course, I'm starting at the entrance exam because honestly I'm not sure where else to do so.
Hopefully in less than a week. Slightly less hopefully, I have something else in Marvelwatch.
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