• 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 design on a white background. Full body image
  • Person wearing a teal plankton Spongebob-themed onesie with a cartoon face design on a white background. Full body image
  • teal plankton Spongebob-themed onesie with antennae on a white background. View from the back
  • teal plankton Spongebob-themed onesie with the OppoSuits logo and a hand touching the fabric, on a white background
  • Man wearing a teal plankton Spongebob-themed onesie from behind on a white background
  • Teal plankton Spongebob-themed onesie with a cartoon face design on a white background
(46 reviews)

Plankton
Adult Onesie


Color: Plankton

Regular price $54.99
$54.99
Sale price
Regular price
Sale Sold out

Size: XS


Features licensed Onesies:

  • Easy to wash and iron
  • Soft and comfortable to wear
  • Smooth sweater-like fabric
  • Officially Licensed

  • Fabric: 17% Cotton, 83% polyester
  • Washing instructions: Do not tumble dry, Machine Washable, Do not bleach

  • Includes: Onesie
  • Onesie: Hood, Side pockets, Brushed fleece inside


Plankton spent years scheming to steal a secret formula, and the only thing worth stealing at your next party is the attention this onesie costume gets you.

What this is

This Plankton costume is an officially licensed Nickelodeon onesie for adults who want to dress as SpongeBob's tiny, scheming rival. It's a green onesie costume with a character hood, brushed fleece interior and side pockets for comfort all evening.

Why this Plankton costume works

  • Character hood: instantly recognizable as Plankton, no extra accessories needed.
  • Brushed fleece interior: makes this onesie costume comfortable to wear for hours, not just a photo op.
  • Side pockets: somewhere to keep your phone or keys while you're out.
  • Poly-cotton blend: sturdier than typical costume fabric, so it holds up beyond one Halloween.

Good for

  • Halloween
  • Costume parties
  • Comic conventions
  • SpongeBob-themed group costumes

Specifications

Included 1x Plankton onesie
Material 83% polyester, 17% cotton, brushed fleece interior
Design / License Officially licensed Nickelodeon / SpongeBob SquarePants product, Plankton character hood
Fit Unisex relaxed fit
Available sizes XS to 2XL
Care instructions Machine washable, do not tumble dry, do not bleach

Frequently asked questions

Can I machine wash this Plankton costume?

Yes, this onesie costume is machine washable. Do not tumble dry and do not bleach to keep the fleece interior in good shape.

Is this Plankton costume officially licensed?

Yes, it's an officially licensed Nickelodeon / SpongeBob SquarePants product.

Does this run small, and should I size up?

No specific sizing note is given for this onesie costume beyond its unisex relaxed fit, available from XS to 2XL, so ordering your usual size works fine.

Are there matching SpongeBob character onesies?

Yes. Complete the group with the SpongeBob onesie, the Patrick onesie, or the Sandy onesie. There's also a kids version of the Plankton onesie for matching family costumes.


Person wearing a teal plankton Spongebob-themed onesie with a cartoon character face on a plain background
Regular price $54.99
$54.99
Sale price
Regular price
An image of three man standing next to each other. The man on the left is wearing a Mr. Pink suit, the man in the middle a Funky Fade suit and the man on the right a Flaminguy suit. An image of three man standing next to each other. The man on the left is wearing a Mr. Pink suit, the man in the middle a Funky Fade suit and the man on the right a Flaminguy suit.

Quality and Fit

Look sharp, feel comfy. Our slim-fit suits are made from high-quality polyester twill—built for style and movement. Go classic or go wild—your wardrobe, your rules.

Overall rating: 4.6666665 / 5 from 48 reviews.

AI Generated Review Summary

The Plankton Onesie is highly praised for its quality and comfort, with customers appreciating its soft fabric and excellent appearance. It's perfect for lounging or scheming in style.

Summary topics

  • Costume Quality (19%): Many customers expressed appreciation for the great quality and appearance of the costume, mentioning it multiple times.
  • Fabric Comfort (19%): Customers keep praising the fabric, describing it as soft, comfortable, and of high quality.

Review topics: [size, fit, fabric, costumes, material, quality, delivery, onesie, suit, service, order].

Review highlights

  • "It’s super cozy and warm and great quality!"Kaitlin W.
  • "Nice fit, and a fantastic soft fabric"Frans B.
  • "Shadows costume was amazing quality."Cristina M.

Reviews

Perfect material, Perfect fit, very

"Perfect material, Perfect fit, very fast shipping, I can recomended 🤗"

Vít C. (4/5)

"It's good it didn't fit me so I went up a size but I gave it to one of my friends and she loved it"

Jakin (5/5)

"its so cool"

Savannah (5/5)

"Fits great and very comfortable!"

Inferno (5/5)

Passt super und ist gut

"Passt super und ist gut verarbeitet. Schnelle Lieferung"

Andrea P. (5/5)

Tolles Kostüm

"Hatte den Overall als Kostüm für meinen Mann gekauft. Super Stoff und bequem. Nummer größer bestellt, damit noch Thermo-Sachen darunter getragen werden können."

Diana P. (5/5)

Schöner Überzeugung.

"Schöner Überzeugung."

Thomas W. (5/5)

Great quality, just as depicted

"Looks and feels great, only minor complaints are that it’s very warm (unsurprisingly) and that it’s very awkward to use the restroom in."

Brienne P. (4/5)

Top quality, fast delivery.

"Top quality, fast delivery."

Pierpaolo V. (5/5)

More than I hoped for

"The suits I ordered look great and are super comfortable. They are as advertised and that is a huge deal for me, since hardly anything is these days."

Jacquelynne G. (5/5)

Q&A