8 Top Halloween Costumes of 2026 as AI Photo Prompts (Tested on Real Faces)

Last Verified: October 2026 — 8 costumes, 8 different real people, results shown

No costume, no makeup, no time? These are the most popular Halloween costumes of 2026, turned into copy-paste AI photo prompts. We ran every one on a different real, free-license photo in Gemini and kept the results, including what we had to fix.

TL;DR

  • Upload one clear photo of your face (or of you and your partner), then paste a prompt.
  • Keep the “same face” line in every prompt; it’s what stops the model swapping you for a stranger.
  • Works in the free Gemini app and in ChatGPT’s image tool.
On this page (4 sections)
  1. All 8 at a Glance
  2. The Prompts
  3. If It Refuses or the Face Drifts
  4. FAQ

All 8 at a Glance

#CostumeWhy it’s in
1K-Pop Demon HuntersThe #1 searched costume of 2026.
2Pennywise (IT)The most-wanted horror costume this year.
3Wednesday AddamsA classic that never leaves the top 10.
4Frankenstein + Bride (couples)One of the top couple costumes of 2026.
5Woody + Jessie (couples)Toy Story 5 put Jessie back on the most-requested list.
6Gru (Despicable Me)The funny pick: a bald cap and a striped scarf.
7NosferatuClassic silent-film horror.
8Ghostface selfieThe scary-prank photo: Ghostface standing right behind you.

The Prompts

1. K-Pop Demon Hunters

Why it’s in: The #1 searched costume of 2026.

Turn this into a photo of her in a K-pop demon hunter Halloween costume, like the girl group from K-Pop Demon Hunters. Keep the exact same person: same face, facial features, skin tone, and identity. It must clearly still be them. Sleek stage outfit with glowing purple accents, long braid, a glowing magic sword, concert stage lights and smoke behind her, high-energy music video look.

Sample run · Gemini 3.1 Flash Image (Nano Banana 2), October 2026

Input used: the prompt above exactly as written, on a real photo (StockSnap, CC0 license).

Before: original photo
Before: original photo
After: K-Pop Demon Hunters
After: K-Pop Demon Hunters

Her face held, but her smile turned into a fierce stage glare. Add “keep her smile” if you want your own expression.

2. Pennywise (IT)

Why it’s in: The most-wanted horror costume this year.

Give this man a Pennywise the clown Halloween costume and makeup from IT. Keep the exact same person: same face, facial features, skin tone, and identity. It must clearly still be them. He keeps his own beard and his big smile, so you can tell it's him under the paint. White face paint with red lines over the eyes and mouth, red clown hair, ruffled silver Victorian clown suit, holding one red balloon, dark rainy street behind him, eerie horror-movie lighting.

Sample run · Gemini 3.1 Flash Image (Nano Banana 2), October 2026

Input used: the prompt above exactly as written, on a real photo (StockSnap, CC0 license).

Before: original photo
Before: original photo
After: Pennywise (IT)
After: Pennywise (IT)

Our first run buried the face so completely it could have been anyone. Telling it to keep his own beard and smile is what made it recognisably him.

3. Wednesday Addams

Why it’s in: A classic that never leaves the top 10.

Turn this into a photo of her dressed as Wednesday Addams for Halloween. Keep the exact same person: same face, facial features, skin tone, and identity. It must clearly still be them. Two black braids, black dress with a white collar, deadpan stare, gothic school hallway behind her, cold gray light.

Sample run · Gemini 3.1 Flash Image (Nano Banana 2), October 2026

Input used: the prompt above exactly as written, on a real photo (StockSnap, CC0 license).

Before: original photo
Before: original photo
After: Wednesday Addams
After: Wednesday Addams

The braids, collar and deadpan stare all came from the prompt; her face shape and brows stayed her own.

4. Frankenstein + Bride (couples)

Why it’s in: One of the top couple costumes of 2026.

Turn this couple into Frankenstein's monster and the Bride of Frankenstein Halloween costumes. Keep both people exactly the same: same faces, features, skin tones and identities. He has green-gray makeup, bolts on the neck and a flat-top; her knit hat and scarf are gone and she has the famous towering black hair with white lightning streaks and a white bandage gown. Old castle laboratory with sparks behind them, classic monster-movie lighting.

Sample run · Gemini 3.1 Flash Image (Nano Banana 2), October 2026

Input used: the prompt above exactly as written, on a real photo (StockSnap, CC0 license).

Before: original photo
Before: original photo
After: Frankenstein + Bride (couples)
After: Frankenstein + Bride (couples)

The first try left her knit hat on and skipped the famous hair. Saying the hat is gone and naming the towering streaked hair fixed it.

5. Woody + Jessie (couples)

Why it’s in: Toy Story 5 put Jessie back on the most-requested list.

Turn this couple into Woody and Jessie Halloween costumes from Toy Story. Keep both people exactly the same: same faces, features, skin tones and identities. Zoom out so both are seen from the chest up with their full hats in frame, both facing the camera and smiling. He wears Woody's brown cowboy hat, yellow plaid shirt and cowhide vest; she wears Jessie's red cowgirl hat, white-and-black cow-print chaps and a red braid. A kid's bedroom with toys and cloud wallpaper behind them, bright happy colors.

Sample run · Gemini 3.1 Flash Image (Nano Banana 2), October 2026

Input used: the prompt above exactly as written, on a real photo (StockSnap, CC0 license).

Before: original photo
Before: original photo
After: Woody + Jessie (couples)
After: Woody + Jessie (couples)

The source was a tight, cropped selfie, so the first run cut off his hat. Asking it to zoom out to chest-up with full hats in frame fixed the framing.

6. Gru (Despicable Me)

Why it’s in: The funny pick: a bald cap and a striped scarf.

Give this man a Gru Halloween costume from Despicable Me. Keep the exact same person: same face, facial features, skin tone, and identity. It must clearly still be them. Bald cap, long black-and-gray striped scarf, black zip-up jacket, scheming grin, two yellow Minion plush toys beside him, evil-lair lighting.

Sample run · Gemini 3.1 Flash Image (Nano Banana 2), October 2026

Input used: the prompt above exactly as written, on a real photo (StockSnap, CC0 license).

Before: original photo
Before: original photo
After: Gru (Despicable Me)
After: Gru (Despicable Me)

It removed his glasses and gave him Gru’s long nose. Say “keep my glasses” if you wear them.

7. Nosferatu

Why it’s in: Classic silent-film horror.

Turn this man into a Nosferatu vampire for Halloween. Keep the exact same person: same face, facial features, skin tone, and identity. It must clearly still be them. Pale gray skin, bald head, pointed ears, sunken dark eyes, long front fangs, black high-collar coat, his long shadow on the wall of a candlelit gothic staircase, black-and-white silent-film tint with slight grain.

Sample run · Gemini 3.1 Flash Image (Nano Banana 2), October 2026

Input used: the prompt above exactly as written, on a real photo (StockSnap, CC0 license).

Before: original photo
Before: original photo
After: Nosferatu
After: Nosferatu

This one changes the face the most (bald head, ears, fangs), so it’s the least recognisable of the eight. That’s the costume, not a bug.

8. Ghostface selfie

Why it’s in: The scary-prank photo: Ghostface standing right behind you.

Turn this into a phone selfie she is taking at night in a dim hallway, smiling at the camera. Keep the exact same person: same face, facial features, skin tone, and identity. It must clearly still be them. Behind her, slightly out of focus but clearly visible, a person in a Ghostface Halloween costume (black hooded robe, white screaming mask) is standing silently, and she hasn't noticed. Phone flash look, scary-movie mood.

Sample run · Gemini 3.1 Flash Image (Nano Banana 2), October 2026

Input used: the prompt above exactly as written, on a real photo (StockSnap, CC0 license).

Before: original photo
Before: original photo
After: Ghostface selfie
After: Ghostface selfie

It turned a plain portrait into a phone selfie, moved her into a dark hallway and put the masked figure behind her shoulder, all from one prompt.

If It Refuses or the Face Drifts

If the model won’t do a character by name, describe the look instead (for example “a white-faced clown with red hair and one red balloon”). If your face drifts, reply in the same chat with just the fix: “keep my original face exactly”.

FAQ

Are these free?

Yes. All 8 ran on Gemini’s image model, which the free Gemini app uses; they also work in ChatGPT’s image tool. Free tiers have daily image limits.

Is it safe to upload my face?

Your photo goes to the AI provider and may be kept under their privacy policy. Use a photo you’d be comfortable posting publicly, and ask before uploading anyone else.

Can I do a couples costume?

Yes. Prompts 4 and 5 were run on couples. Upload a photo with both faces clearly visible and keep the “both people” line.

Where did the sample photos come from?

Free CC0 photos from StockSnap. Each costume uses a different person so you can see how it works on different faces.