The villain Innsmouth is built like a cephalopod, and that is the whole of his Quirk. Octopus rewrites his anatomy along invertebrate lines, handing him rubbery limbs, gripping suckers, and a mouth that works like a siphon.
Octopus, read as Tako, is a Mutant Quirk that functions at close quarters, belonging to Innsmouth. It is original to the anime and appears in Episode 32.
The Quirk grants its owner the biology and the repertoire of an octopus. That package covers a set of stretchy limbs, suckers along them for grip, and a mouth shaped like a siphon that can spray ink.

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The octopus villain in My Hero Academia is Innsmouth, who wields the Octopus Quirk, an anime original Mutant power that gives him the biology of an octopus, including stretchy limbs, suckers, and an ink spraying siphon mouth.
The Octopus Quirk grants its owner, the villain Innsmouth, an octopus's full biology, stretchy limbs lined with suckers for grip and a siphon shaped mouth capable of spraying ink.
Innsmouth and his Octopus Quirk are original to the anime, first appearing in Episode 32.
Innsmouth's Octopus Quirk closely resembles Ikajiro Takobe's Octopus (Squid) in concept, though no connection between the two characters has been established in My Hero Academia.
Octopus is classified as a close range Mutant Quirk, meaning it permanently alters Innsmouth's body rather than emitting an effect or transforming him temporarily.
Looking for more on Octopus? The My Hero Academia Wiki on Fandom has a dedicated page with community notes.
View on FandomThis content is original writing by Daddy Jim Headquarters based on the My Hero Academia anime series, manga, and official materials. My Hero Academia was created by Kohei Horikoshi, published by Shueisha, and animated by Bones. All rights to My Hero Academia and its characters belong to their respective owners. Episode and chapter references are cited where applicable.
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