Quick take
- Superhero and villain costumes lead again in 2026, pushed by Avengers: Doomsday and Spider-Man: Brand New Day hitting theaters, plus DC's Supergirl.
- The real breakout is Rumi from KPop Demon Hunters — dragon braids and a pink argyle sweater are the specific, searchable costume detail driving it.
- Wicked's Elphaba and Glinda remain one of the most reliable two-person costume pairings, still climbing in search interest.
- Group and family costumes are leaning on Inside Out 2's newer emotions — Anxiety, Ennui, and Embarrassment — for color-coded, large-group looks.
- A real counter-trend: DIY and thrifted costumes, as a documented pushback against single-wear, fast-fashion costume pieces.
Every October, some version of a "Halloween costume trends" list shows up promising to tell you what's hot — and most of them are guessing, or just repackaging last year's list with a new date. This one is sourced: retail trend reporting, the National Retail Federation's long-running annual Halloween survey, and what's actually filling theaters and topping Netflix's charts heading into the 2026 season. Some of it is exactly what you'd expect. One piece of it is a specific, searchable detail — a braid style, a sweater pattern — that's doing more work than any single movie title this year.
Superheroes and villains still own the top of the list
Superhero and villain costumes have been the single largest costume category for years running, and 2026 doesn't break that pattern — if anything, it has more fuel behind it than usual. Marvel's Avengers: Doomsday and Sony's Spider-Man: Brand New Day are both in theaters this fall, and DC's Supergirl adds a third major tentpole to the mix. That's an unusually dense stretch of major superhero releases landing right before Halloween, and costume retailers and trend forecasters are pointing to it as the reason the category keeps growing instead of plateauing.
What's shifted slightly is the villain side of that equation. Villain costumes specifically — not just the heroes — are being flagged as one of 2026's bigger sub-trends, alongside a broader pull toward gothic and Victorian horror styling that sits adjacent to, but separate from, the capes-and-masks crowd.
Rumi and the KPop Demon Hunters effect
If one single costume is defined as this year's breakout, trend trackers point to Rumi, the lead character from Netflix's KPop Demon Hunters. The film became Netflix's most-watched animated original ever after its 2025 release, and that popularity is carrying directly into costume search behavior — specifically around two reproducible details: Rumi's dragon-braid hairstyle and her pink argyle sweater. Those are the kind of specific, low-cost, high-recognition elements that tend to travel fastest as a costume, because they don't require a full licensed outfit to read clearly.
Wicked's Elphaba and Glinda are still a reliable duo
Behind Rumi, search interest is also climbing again for Elphaba and Glinda from Wicked — a costume pairing that's held up as one of the more durable two-person options since the first film's release, precisely because it works as a solo look, a duo, or a larger green-and-pink group costume without much modification.
Group costumes lean into Inside Out 2's emotions
For families and larger friend groups, the clearest 2026 driver isn't a superhero ensemble — it's Inside Out 2. Specifically, the newer emotions introduced in the sequel — Anxiety (orange), Ennui (indigo), and Embarrassment (pink) — are showing up as a favored large-group format, because a group costume built around color-coded face paint and matching outfit tones scales cleanly from four people to a dozen without anyone needing an identical, hard-to-source outfit.
The real counter-trend: DIY and thrifted costumes
Alongside the licensed-character trends, there's a genuinely separate movement worth naming: a documented shift toward DIY and thrifted costumes, built from repurposed clothing and secondhand finds rather than a single-use costume bought new. Thrift and resale shops report a real seasonal surge every fall as gently used costumes — often worn only once or twice the year before — get resold. It's not just a budget move; it's increasingly framed as a sustainability response to single-wear, synthetic costume pieces that are worn for one night and thrown away. That framing shows up consistently across costume-focused coverage this year, positioned as a counterweight to the licensed, store-bought side of the category rather than a replacement for it.
Trending costume categories at a glance
Here's how the major 2026 pulls break down — what's driving each one, and how verifiable the trend actually is.
Superheroes & Villains
Still the single biggest costume category. Avengers: Doomsday's theatrical run is a direct driver, with villain-specific looks trending as a notable sub-lane.
Spider-Man: Brand New Day
Sony's latest Spider-Man release lands right before Halloween, keeping the character in the top tier of hero costumes again this year.
Supergirl
DC's own 2026 tentpole, giving the superhero category a third major theatrical release in the same season.
Rumi, KPop Demon Hunters
Dragon braids and a pink argyle sweater — the single most-searched specific costume detail of the season, tied to Netflix's most-watched animated film ever.
Wicked: Elphaba & Glinda
Green-and-pink pairing still climbing in search interest, flexible enough to work solo, as a duo, or scaled up for a group.
Inside Out 2 Emotions
Anxiety, Ennui, and Embarrassment give large groups a color-coded costume format that scales without matching outfits.
DIY & Thrifted
A documented pushback against single-wear costume pieces — secondhand and repurposed builds, with a real seasonal resale surge behind it.
'90s & 2000s Nostalgia
Throwback looks referencing older shows and movies, showing up especially among parents dressing infants for a first Halloween.
| Trend | Real signal behind it |
|---|---|
| Superheroes & villains | Three major theatrical releases in one season |
| Rumi (KPop Demon Hunters) | Top breakout search, tied to a record-setting Netflix film |
| Wicked duo | Sustained, climbing search interest since 2024 |
| Group emotions costume | Inside Out 2's new characters, built for large groups |
| DIY & thrifted | Reported seasonal resale surge, sustainability framing |
Common questions
What's the single biggest Halloween costume trend for 2026?
Superhero and villain costumes remain the largest overall category, driven by a dense stretch of 2026 theatrical releases. The single biggest breakout detail, though, is Rumi from KPop Demon Hunters.
Why is Rumi from KPop Demon Hunters such a big costume this year?
The film became Netflix's most-watched animated original ever, and Rumi's look includes two specific, easy-to-replicate details — dragon braids and a pink argyle sweater — that read clearly as a costume without needing a full licensed outfit.
Are thrifted costumes really trending, or is that just marketing?
It's a genuinely reported trend, not just messaging — thrift and resale shops see a documented seasonal surge each fall, framed increasingly around sustainability and moving away from single-wear costume pieces.
What's driving the group-costume trend this year?
Inside Out 2's newer emotions — Anxiety, Ennui, and Embarrassment — give larger groups a color-coded format that scales easily, which is why it's a bigger group driver than any single superhero ensemble.
Where does the retail and spending context in this piece come from?
The National Retail Federation runs an annual Halloween consumer survey with Prosper Insights & Analytics, tracking participation and category trends year over year — it's one of the more consistently cited sources in costume trend reporting.
Most of what's "trending" this Halloween isn't mysterious — it lines up with what's actually in theaters and what actually broke records on a streaming platform. Superheroes and villains lead because three major releases landed in the same season. Rumi leads the breakout conversation because KPop Demon Hunters is the most-watched animated film Netflix has ever had, and her look happens to be unusually easy to replicate. Group costumes are leaning on Inside Out 2 because color-coded emotions scale better than matching superhero suits. And running underneath all of it is a real, separate shift toward thrifted and DIY costumes — not as a replacement for the licensed-character trend, but as a documented counter-movement against costumes designed to be worn once and thrown away.
Disclosure. DopamineKart has no business relationship with Marvel, Sony Pictures, DC, Netflix, Universal/Wicked, Pixar/Disney, or Goodwill Industries. Nothing in this piece is sponsored, and no affiliate links appear above — every outbound link goes to an official studio, streamer, or organization site. Trend claims are drawn from retail and entertainment trade reporting, including the National Retail Federation's annual Halloween survey; nothing here is presented as a trend unless it was independently reported as one. Real photography is Wikimedia Commons, credited per image.
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