Plankton

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

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.