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Halloween Costume

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132 products
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Person wearing a Sandy character onesie with a white background Person wearing a Sandy character onesie with a white background

Sandy Adult Onesie

$54.99
$54.99
(50 reviews)
Person wearing a teal plankton Spongebob-themed onesie with a cartoon character face on a plain background Person wearing a teal plankton Spongebob-themed onesie with a cartoon character face on a plain background

Plankton Adult Onesie

$54.99
$54.99
(51 reviews)
Man wearing a Superman onesie with a red cape on a white background Man wearing a Superman onesie with a red cape on a white background

Superman Adult Onesie

$54.99
$54.99
(50 reviews)
Child wearing a teal Plankton onesie with cartoon face design on a white background Child wearing a teal Plankton onesie with cartoon face design on a white background

Plankton Kids Onesie

$49.99
$49.99
(17 reviews)
Child wearing a colorful Patrick onesie with a hood on a white background Child wearing a colorful Patrick onesie with a hood on a white background

Patrick Kids Onesie

$49.99
$49.99
(20 reviews)
Child wearing a Superman-themed onesie with a red cape on a white background Child wearing a Superman-themed onesie with a red cape on a white background

Superman™ Kids Onesie

$49.99
$49.99
(20 reviews)
Person wearing a Spongebob-themed onesie with a white background Person wearing a Spongebob-themed onesie with a white background

Sandy Kids Onesie

$49.99
$49.99
(20 reviews)
Man wearing a colorful suit with Transformers pattern on a white background Man wearing a colorful suit with Transformers pattern on a white background

Transformers™ Men's Suit

$129.99
$129.99
(No reviews)
Person wearing a blue My Little Pony onesie with a hood on a white background Person wearing a blue My Little Pony onesie with a hood on a white background

My Little Pony™ - Bluebelle Adult Onesie

$54.99
$54.99
(51 reviews)
Child wearing a blue My Little Pony onesie with a hood featuring a cartoon character on a white background Child wearing a blue My Little Pony onesie with a hood featuring a cartoon character on a white background

My Little Pony™ - Bluebelle Kids Onesie

$49.99
$49.99
(20 reviews)
Person wearing a pink My Little Pony onesie with a unicorn design on a white background Person wearing a pink My Little Pony onesie with a unicorn design on a white background

My Little Pony™ - Firefly Adult Onesie

$54.99
$54.99
(1 reviews)
Child wearing a pink My Little Pony onesie with a hood featuring animal ears on a white background Child wearing a pink My Little Pony onesie with a hood featuring animal ears on a white background

My Little Pony™ - Firefly Kids Onesie

$49.99
$49.99
(20 reviews)
Man wearing a colorful My Little Pony suit with cartoon character pattern on a white background Man wearing a colorful My Little Pony suit with cartoon character pattern on a white background

My Little Pony™ Men's Suit

$129.99
$129.99
(51 reviews)
Man wearing a Donkey Kong patterned suit with a red tie on a white background Man wearing a Donkey Kong patterned suit with a red tie on a white background

Donkey Kong™ Men's Suit

$129.99
$129.99
(51 reviews)
A man wearing a brown plush monkey onesie with a hood featuring a monkey face and pink ears, standing against a light gray background. A man wearing a brown plush monkey onesie with a hood featuring a monkey face and pink ears, standing against a light gray background.

Monkey Adult Onesie

$44.99
$44.99
(12 reviews)
A man wearing a plush lion onesie onesie costume with a hood featuring a lion face and ears, a tan body, and a cream-colored belly patch, photographed against a light gray studio background. A man wearing a plush lion onesie onesie costume with a hood featuring a lion face and ears, a tan body, and a cream-colored belly patch, photographed against a light gray studio background.

Lion Adult Onesie

$44.99
$44.99
(12 reviews)
A man wearing a blue elephant onesie pajama with pink inner ears, a full front zipper, and a hood, standing against a light gray background. A man wearing a blue elephant onesie pajama with pink inner ears, a full front zipper, and a hood, standing against a light gray background.

Elephant Adult Onesie

$44.99
$44.99
(12 reviews)
A man and a woman modeling matching black hooded onesie pajamas with an all-over white Ghost Face print, standing against a light gray studio background. A man and a woman modeling matching black hooded onesie pajamas with an all-over white Ghost Face print, standing against a light gray studio background.
NEW

Ghost Face® Adult Onesie

$54.99
$54.99
(51 reviews)
A man with curly blonde hair wearing a short-sleeve Hawaiian shirt with a vibrant, colorful, graphic Scooby-Doo print on a black background, paired with light blue jeans, against a plain light gray background. A man with curly blonde hair wearing a short-sleeve Hawaiian shirt with a vibrant, colorful, graphic Scooby-Doo print on a black background, paired with light blue jeans, against a plain light gray background.
HAWAIIAN
NEW

Scooby-Doo™ Men's Shirt

$44.99
$44.99
(6 reviews)
A male model with platinum blonde hair wearing a black and red Halloween-themed knit sweater with Ghostface and skull patterns, paired with black pants, against a light gray background. A male model with platinum blonde hair wearing a black and red Halloween-themed knit sweater with Ghostface and skull patterns, paired with black pants, against a light gray background.
NEW

Ghost Face® Unisex Sweater

$49.99
$49.99
(12 reviews)
A man wearing a dark green knit v-neck Harry Potter sweater with white and light green trim, featuring a Slytherin crest on the chest, layered over a white collared shirt and paired with black trousers, set against a plain light gray background. A man wearing a dark green knit v-neck Harry Potter sweater with white and light green trim, featuring a Slytherin crest on the chest, layered over a white collared shirt and paired with black trousers, set against a plain light gray background.
NEW

Harry Potter™ - Slytherin Unisex Sweater

$49.99
$49.99
(No reviews)
A man wearing a maroon ribbed V-neck Harry Potter Gryffindor sweater with yellow and orange trim, featuring the Gryffindor house crest on the left chest, styled over a white collared shirt and dark trousers, set against a plain light gray background. A man wearing a maroon ribbed V-neck Harry Potter Gryffindor sweater with yellow and orange trim, featuring the Gryffindor house crest on the left chest, styled over a white collared shirt and dark trousers, set against a plain light gray background.
NEW

Harry Potter™ - Gryffindor Unisex Sweater

$49.99
$49.99
(No reviews)
Harry Potter™ - Hufflepuff Harry Potter™ - Hufflepuff
NEW

Harry Potter™ - Hufflepuff Unisex Sweater

$49.99
$49.99
(No reviews)
A woman with curly brown hair wearing a navy blue knitted sweater with a Harry Potter Ravenclaw crest on the chest, styled with light blue jeans against a plain white background. A woman with curly brown hair wearing a navy blue knitted sweater with a Harry Potter Ravenclaw crest on the chest, styled with light blue jeans against a plain white background.
NEW

Harry Potter™ - Ravenclaw Unisex Sweater

$49.99
$49.99
(No reviews)

Halloween Costume Ideas for the Whole Family

Looking for a Halloween costume that does more than the basics? OppoSuits' Halloween costume collection brings together licensed character onesies, suits, shirts, sweaters and blazers, from Pokémon and Batman to Sonic the Hedgehog and the Smurfs. Whether you want a full costume or something you can layer into a party outfit, there's a Halloween costume here for men, women, teens, and kids.

Why Choose a Halloween Costume from OppoSuits

  • Two costume formats: go all-in with an onesie, like Gengar, Charmander, or Pikachu, or keep it wearable with a full suit version, like The Joker™, Scooby-Doo™, or The Batman.
  • Officially licensed designs from Pokémon, DC Comics, Sesame Street™, Sonic the Hedgehog™, South Park™, Super Mario™, Minecraft™, and more.
  • Sizes for the whole family: men, women, teens, and kids, so everyone can dress up together.
  • Built-in group costume options: all four South Park™ friends (Stan, Cartman, Kyle, Kenny) as onesies, or Bert™ and Ernie™ as matching Sesame Street sweaters.
  • Original designs too: not every costume is licensed, Zombiac offers a classic horror look as a suit.

Good for

  • Halloween parties
  • Trick-or-treating
  • Costume contests
  • Group and family costumes

What to check before you buy a Halloween costume

A few things to check before you order, so you get the right format and size.

Styles Onesies, suits, shirts, sweaters, and blazers
Licenses Pokémon, DC Comics, Sesame Street™, Sonic the Hedgehog™, South Park™, Super Mario™, Minecraft™, Avatar: The Last Airbender™, Beetlejuice™, Ghost Face®, Harry Potter™, My Little Pony™, and more
Available for Men, women, teens, kids, and unisex sizing
Delivery See current delivery times on our shipping page

Onesie or Suit: Choose Your Costume Format

Not sure which format to pick? A onesie, like Charmander or Cookie Monster, is the most immersive option, ideal for a Halloween party or trick-or-treating where comfort matters. A suit version, like Pokémon or Superman™, gives you the same character without sacrificing a more put-together look, useful if your Halloween event doubles as an office party or a night out.

Looking for a specific format? Browse Halloween Onesies, Halloween Suits for Men, or the wider Halloween Outfits collection. There's also Halloween suits for kids and for teens.

Frequently asked questions about Halloween costumes

What's the difference between the onesie and suit Halloween costumes?

A onesie is a single, all-in-one costume piece for a bold, full-character look, while a suit version reworks the same character into a wearable jacket-and-pants set, better suited to events with a bit more of a dress code.

Are the character costumes officially licensed?

Yes, many designs are officially licensed, including Pokémon, DC Comics, Sesame Street™, Sonic the Hedgehog™, South Park™, Super Mario™, and Minecraft™.

Are there Halloween costumes for kids and teens too?

Yes, alongside the men's and women's sizes, there are Halloween suits and onesies sized for kids and teens.

Can I put together a group costume?

Yes, the collection includes built-in group sets, such as all four South Park™ friends (Stan, Cartman, Kyle, and Kenny) as matching onesies, or Bert™ and Ernie™ as a Sesame Street™ sweater pair.

When will my Halloween costume arrive?

Delivery times can change, so check the current estimates on our shipping page before you order.