Halloween is right around the corner, and nothing turns heads like a perfectly paired duo costume. Whether you’re going for funny, iconic or ironically nostalgic, the best partner looks will tell a story and make for unforgettable photos.
Whilst there are so many to choose from, there are some truly iconic pairings to fall back on – and they won’t break the bank or demand an impossible search for accessories.
So we’ve curated a list of the top 10 duo costumes to do with your bestie or significant other this Halloween in Cardiff, guaranteed to make you the main characters of the night.
1. Mavis and Johnny from Hotel Transylvania
She’s a sheltered vampire discovering the world beyond her father’s castle and he’s a free-spirited human who stumbles into the monster realm. Mavis and Johnny are opposites who fall in love despite the odds. You can capture their quirky chemistry with Mavis’s gothic-chic dress, striped tights, and black lipstick alongside Johnny’s colourful tourist gear and easygoing grin. It’s spooky meets sunny, and somehow, it works perfectly.
2. Mr. and Mrs. Smith
@cami_cuffari Draft from our best couples Halloween costume to date #mrandmrssmith ♬ original sound – amèlie
This spy couple redefined chemistry and chaos. Jane and John Smith live picture-perfect suburban lives – until they discover they are both assassins hired to eliminate each other. Channel their iconic energy with sleek black outfits and dark shades. This costume’s about confidence, mystery, and a dash of danger. A power couple in every sense.
3. 2 Broke Girls
@goldeneyedgirl we couldnt not go as them its too perfect #2brokegirls#halloween#cosplay#carolinechanning#maxblack#katdennings#costume#costumeideas#halloweencostume#halloweencostumeideas
What’s better than going as Brooklyn’s sassiest waitresses? Caroline Channing is the former socialite who last it all but never her class, while Max Black is street-smart, sarcastic, and forever unimpressed. Together, they are the perfect blend of ambition and attitude. Recreate the ultimate diner dream team with yellow dresses, red aprons, and a tray of fake cupcakes. One’s a dreamer, the other a realist, and together they are pure comedy gold. An iconic duo for Halloween.
4. The Pete Davidson and Timothee Chalamet SNL Skit
@rielytimmis Yeeet skirrrttt @PaigeHogan #timotheechalametsnl #dreads #yeet #skirtt
Not your typical costume duo, but undeniably iconic. Pete and Timmy’s friendship, from viral sketches to late-night antics, embodies chaos. Pete brings dry humor and streetwear vibe, while Timmy adds artsy flair and boyish charm. Think oversized hoodies, loose jeans and tousled hair. Pair that with their iconic ‘Rap Roundtable’ performance on SNL and you are sure to be most fun duo on Halloween.
5. Fireboy and Watergirl
via Reddit
Childhood nostalgia alert! If you don’t know these classic Friv heroes we can’t be friends. These elemental heroes spent their days solving puzzles and working together despite their natural differences. Dress in bold reds and glowing blues to bring this duo to life, and play up their teamwork energy. They’re a perfect metaphor for balance; two forces that shouldn’t mix but somehow do.
6. 6/7
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If you haven’t heard of this meme yet you must be living under a rock. This clever and minimalist costume is for the duos that love a good laugh. The costume itself is the joke. It makes no sense, it’s over-referential, and everyone who gets it (lets face it, who won’t?) will be on the floor. This duo costume is the epitome Gen Z humor.
7. Phineas and Ferb
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Step into the world of endless summer vacation with these inventive stepbrothers. Phineas is the idea guy: optimistic, creative, and fearless while Ferb is the quiet genius who brings the plans to life. Their bond is pure collaboration and curiosity. Bring the cartoon energy with Phineas’s orange-striped shirt and Ferb’s green hair, and maybe carry the blueprints to your ‘latest invention’.
8. Shaggy and Scooby
@amphetaminebad happy halloween!!! #fyp #foryoupage #viral #foryou #foryoupage #scoobydoo #scoobydooandshaggy #scoobydoocosplay ♬ original sound – LightskinMonte
The original mystery-solving buddies. Shaggy’s a lovable coward with an endless appetite, and Scooby is his equally jumpy but loyal best friend. Their friendship is all chaos and comfort, perfect for a lighthearted costume. Go with a green shirt and brown pants for Shaggy, and a brown onesie or ears for Scooby, and don’t forget a prop box of Scooby snacks of course.
9. Sophia Grace and Rosie
@emmarafteryy Sophia grace and rosie #sophiagraceandrosie #ellen #OOTD #OOTN #outfitinspo #costume #halloweenlook #halloweencostume ♬ original sound – Ellen DeGeneres
Channel peak 2010s nostalgia with the iconic Ellen Show duo. Think pink tutus, tiaras, and all the chaotic confidence of their viral ‘SuperBass’ moment. One’s the bold performer, the other’s the sweet hype girl, and together, it’s the perfect mix of nostalgia and ironic Gen Z humor.
10. Black Swan and White Swan
This one is an oldie but a goodie. Inspired by Swan Lake (and Black Swan’s psychological twist), this pairing explores duality: grace versus madness. The White Swan’s elegance contrasts beautifully with the Black Swan’s fierce intensity. Use feathered tutus, dramatic makeup, and mirrored poses for a look that’s both haunting and breathtaking.
Whether you choose comedy, chaos, or classic horror, these duos capture the essence of Halloween. So grab your partner-in-costume and step into character. The night is yours to steal.
