Magical transforming Zorro ...he of the exploding sword strike!
Super hero or not?

Some of you need to check your arbitrary qualifiers, because they will fail!
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As pointed out, Zorro has fought the Supernatural, and himself used supernatural weapons; a sword forged with magic and alchemy, an amulet linked to his spirit guide, etc, so if you say there is no-supernatural in his world, and use that as your arbitrary criteria for him
not being a superhero, You fail!
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If you qualify Batman (and by extension Zorro) as
not a superhero? Because according to you
superheroes have to have
super powers, you also fail, since DC themselve market Batman as a Super hero.
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If you qualify Batman as "super" because according to you
his skills, and resources are "super", but not Zorro's, you fail.
Since Zorro was shown to be superior; in skills swordsmanship, marksman, stealth, agility, sleight of hand, cunning and wits, etc.than all he faught.
Also as far as resources, he used all the best of his time, and invented some of his own, ...and when switched to a contemporary setting, his vast wealth and resources passed to his legacies also switched to modern weapons and technology too.
The legacy aspect began with Fairbanks in 1925, continued into the movie-serials, where several legacy Zorro were depicted switching to modern weapons revolvers, even a retractable sword in the serials that influenced Lucas and Spielberg, to the Gen Z incarnation where he uses a LaZer sword and whip, and motorcycle, etc...
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Superhero fiction is just a sub-genre of all Heroic fiction, just people want to move and draw arbitrary lines all over the place.
Either with nuances of character, specific skills abilities, how "real" their world is/was/has remained, whether the costume qualifies as a costume or not, if it's tight enough, etc...LOL.
Some classify it as beginning around the popularity and trend of
Superman and the American comic book explosion and everything it inspired. Others want to move it back, to the things that influence Superman, the comic-strip characters Phantom, Flash Gordon, Popeye! , to the pulp-magazines and radio heroes, The Shadow, Zorro, John Carter, Doc Savage, Green Hornet, etc. , to gothic and victorian era heroes, then to middle ages and knights, even further all the way back heroic epics and classics , Beowulf, Hercules, Gilgamesh and the oldest recorded stories. LOL!
Which defeats the whole purpose of the classification to begin with.
It just becomes arbitrary and meaningless.
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lolZ! You win..