Plural of “hero”
The plural of hero is heroes.
Why
From Greek 'heros,' a word originally naming a demigod or warrior of legendary courage, 'hero' entered English early enough to fall under the same spelling convention governing most long-established -o-ending nouns, which take -es in the plural rather than a bare -s, giving 'heroes.'
The regional American sandwich also called a "hero" (a large sandwich on a long roll, more commonly called a "sub," "hoagie," or "grinder" depending on the region) pluralizes identically as "heroes," showing the same -oes ending applies fully to this entirely unrelated everyday sense of the word, not just to the classical or figurative meaning. Ancient Greek literature distinguished heroes as figures partway between mortal and divine, often the offspring of a god and a human, a specific mythological category quite distinct from the modern everyday sense of an admirable or courageous person, though both senses share the identical plural "heroes" without any distinction in form.
Usage note
There's no shortcut rule reliably predicting -oes versus -os for English -o nouns as a whole, but "heroes" itself is fully settled and essentially universal across every sense of the word, unlike some other -o words ("zero," "volcano") that genuinely accept both endings.
"Heroine," once the standard gendered counterpart to "hero," pluralizes with no trouble at all as "heroines," though contemporary writing increasingly reaches for the gender-neutral "hero" for people of any gender — a shift running alongside the broader retreat from other gendered word pairs like "actor/actress." Sandwich terminology across the United States stays stubbornly regional and inconsistent: "hero," "sub," "hoagie," and "grinder" name essentially the same food depending purely on where you're standing, a vocabulary quirk unrelated to grammar but one that comes up constantly whenever the word's everyday, non-mythological sense gets discussed. Comic book publishers, for their part, have built sprawling fictional universes around teams of heroes banding together, a genre convention that keeps the plural in near-constant circulation among readers of every age.
Common real mistakes
"Heros" turns up fairly often as a spelling mistake, sometimes reinforced by proper nouns spelled "Hero" — a show title, a character's name — that behave nothing like the common noun grammatically, leading writers to assume, wrongly, that the common noun must pluralize the same simple way. Worth flagging separately: "heroic," the adjective built from "hero," is fully regular and stays fixed in form no matter what's being described, quite unlike the countable noun itself, which always becomes "heroes" the moment more than one person or sandwich is on the table.
The wider pattern
The -oes ending groups 'hero' with other long-settled -o nouns like 'potato' and 'tomato,' all of which became fully everyday words early enough in English to take the older -es plural, unlike more recent or specialized -o borrowings such as 'photo' or 'studio,' which simply add -s.
Examples
- The parade honored several local heroes from the fire department.
- Comic books are full of heroes with wildly different powers.
- Both heroes in the story sacrificed something important to save others.
- The deli sold enormous heroes stuffed with meat and cheese.
- History remembers few heroes as vividly as the era's great explorers.
- The children dressed up as their favorite superhero heroes for Halloween.
- Firefighters are rightly celebrated as everyday heroes.
- The film follows a group of unlikely heroes on a dangerous mission.
- She ordered two heroes for the picnic, one turkey and one veggie.
- The museum exhibit profiled heroes of the civil rights movement.
- The documentary profiled unsung heroes from the community's history.
- The deli's heroes came in six different combinations of meat and cheese.
- The award ceremony honored local heroes who responded to the wildfire.
- Two heroes emerged from the crowd to help the injured cyclist.
- The children's book featured everyday heroes rather than superheroes.