Series 01 · Wild Inside · An Olivia Original

CostumeMonsters

A little monster in every costume.

Meet one curious little monster with a closet full of wild possibilities. Every mystery box reveals a new animal costume, a new personality, and maybe something golden.

Reserve a mystery box Meet the Monsters
6 to find + 1 secret3-inch collectibleSealed costume bag inside
Costume Monsters Series 01 blind boxes with Dino in a green dinosaur costume and Golden in a gold leopard costume
Preorders opening soon
The idea

The concept

One tiny monster.
A whole world of costumes.

Every figure hides the same little monster. Change the costume and you change the personality, the pose, and the story. Look for the face that gives it away.

Soft lilac face
Heart-shaped nose
Crescent cheeks
One tiny tooth
Mitten paws
Stitched star patch
All seven Series 01 figures side by side: Dino, Pups, Finn, Slither, Tiger, Ellie and Golden
Series 01 lineup

Meet the Monsters

Six to find, one secret. Tap a monster to open its character card.

??? — The Secret

Somewhere inside Series 01, something Golden is waiting.

Get Golden clues
The blind box

Which one will you find?

The package feels like opening a tiny costume closet.

Pick a mystery box

Every box looks the same on the outside. That's the fun part.

Open the sealed costume bag

A star-print foil bag keeps the surprise a surprise.

Meet your monster

Who are you wearing today?

Collect the family

Check them off on the collector card inside.

Watch for Golden

A secret chase figure hides somewhere in the series.

1 sealed figureCharacter cardCollector checklistStar-print inner bag
An open Series 01 box with the lilac star-print costume bag inside
Reserve Series 01

Open the closet first

Reserve now, pay nothing until we ship. Early reservations get first pick when the closet opens.

Preview store. Prices, rarity and ship dates are working targets while Series 01 is in development — nothing here is final, and no real payment is taken.
Ships from MichiganFlat-rate shipping on every order. Free on 6-box cases.
Pay when it shipsReservations are free to place and free to cancel until your box is packed.
Trade-friendlyEvery box comes with a collector card so friends can swap doubles.
Join the reveal

Show us who you're wearing

Costume Monsters is built for sharing: reveals, trades, and Golden sightings.

Costume reveal videos

Film your unboxing and tag #WhoAreYouWearing. We reshare our favorites every week.

Trade your doubles

The collector card inside each box doubles as a trade card. Complete the family with friends.

Golden sightings

Found the secret? Post it and we'll add you to the Golden wall of fame.

Imagined by Olivia

It started with one question.

"What if one little monster could become anything it wanted, just by putting on a new costume?"

— Olivia, age 8, creator

Costume Monsters began with a simple idea from Olivia: a tiny monster who could become a different animal simply by changing costumes. That idea grew into Dino, Pups, Finn, Slither, Tiger, Ellie, and one very secret Golden character.

Every design starts with Olivia's sketches and picks, then gets built with grown-up product care: original characters, soft-touch materials, and safety testing before anything ships.

PuppiesUnicornsPink & purpleImaginary friends