Quirks: Unique supepowers possessed by 80% of the population. Quirks are generally divied into three classes; Emitter, Transformation, and Mutant. Quirks can rarely manifest in animals but are most commonplace in humans.
- Although most Quirks manifest in the form of a single ability, some Quirks mutate and can fuse together with other Quirks so that the descendents of Quirk-users can have multiple abilities. Some Quirks provides abilities so versatile that they can have multiple uses.
- Although Quirk users are born with only a single Quirk, the infamous supervillain All For One has the ability to steal Quirks and grant the Quirks he has stolen to other people allowing them to have multiple Quirks.
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