My Hero Academia Wiki
My Hero Academia Wiki

Hypertrophy ( () (だい) () Hidaika?) is a Quirk possessed by All For One, who stole it from an unknown person.


The Quirk allows the user to enlarge their arm at will. The etymology and medical definition of the word "hypertrophy" also suggest this to be the Quirk's effect.[1]

All For One has been seen using this Quirk, both in combination with several of his other Quirks for a deadly attack, as well as in order to greatly strengthen his arm to restrain Hood.[2]



  1. My Hero Academia Manga and Anime: Chapter 93 and Episode 49.
  2. My Hero Academia: Vigilantes Manga: Chapter 94.

External Links

  • Hypertrophy - Wikipedia article about the medical condition known as Hypertrophy, which is characterized by enlarged cells.

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