Antigen Swap
CharacterOne of the quietest powers in All For One's collection, and one of the most useful to a man who never wanted to be found. Antigen Swap changes his blood type on command, which erases the single most damning thing a criminal tends to leave behind at a scene.
Overview
Listed in Japanese as Kōgen Hentai, this self-range Transformation Quirk sits in All For One's hands after being taken from a user whose identity was never revealed. Chapter 401 introduces it, and Episode 161 brings it to the anime.
Its function fits in a sentence: the holder decides what blood type he has, and it becomes that.
Mechanics
The effect is internal and offers nothing offensive. Its value lies in what it denies other people: blood left behind stops being evidence once the blood itself can be rewritten between one scene and the next.
Paired with Bloodlet, it also breaks Bloodcurdle, which All For One demonstrates against Toshinori Yagi and Chizome Akaguro by editing away the very thing that paralysis keys on.
Notable Users
All For One is the only named holder; the original owner remains unknown. Across his villain career it kept him untraceable, letting him direct events from cover while Heroes and the Police Force chased evidence that never matched.
The Quirk carries a footnote in publication history too. Darkness received its name belatedly, in Volume 42, and setting that case aside, no Quirk introduced after this one was ever given a name in the main manga.
Frequently Asked Questions
What is an antigen swap?
Antigen Swap is a Quirk held by All For One that lets him change his own blood type at will, which erases blood evidence he might otherwise leave behind at a scene.
Who uses Antigen Swap in My Hero Academia?
All For One is the only named user of Antigen Swap. The identity of the original holder he stole it from was never revealed.
What type of Quirk is Antigen Swap?
Antigen Swap is a self range Transformation Quirk that debuted in Chapter 401 of the manga and Episode 161 of the anime.
How does Antigen Swap counter Bloodcurdle?
When paired with Bloodlet, Antigen Swap lets All For One rewrite his own blood on demand, which breaks Bloodcurdle since that paralysis Quirk keys on the blood itself. All For One demonstrated this against Toshinori Yagi and Chizome Akaguro.
Does Antigen Swap have any offensive use?
No, Antigen Swap has no offensive application. Its value lies purely in denying investigators usable blood evidence.
Sources & Information
Looking for more on Antigen Swap? The My Hero Academia Wiki on Fandom has a dedicated page with community notes.
View on FandomThis content is original writing by Daddy Jim Anime 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.
Rights holders
- Created byKohei Horikoshi
- Published byShueisha
- Animated byBones
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