How do you make a DIY Plankton eye?

Cut a large circle out of white craft foam, glue a smaller yellow circle in the center, and add a black circle for the pupil. Attach it to a green beanie or a headband.

What is Plankton's actual name?

His full name is Sheldon J. Plankton, which was kept a secret from his wife Karen for many years.

What does Plankton wear in the show?

Plankton is actually naked most of the time, as his green skin is his natural copepod body, though he occasionally wears a matching green bodysuit.

AI-generated example

Plankton Costume

Bring Bikini Bottom's tiny, one-eyed evil genius to life this Halloween.

Sheldon J. Plankton is the pint-sized, one-eyed main antagonist of SpongeBob SquarePants who is constantly scheming to steal the Krabby Patty secret formula. Dressing up as Plankton is a hilarious choice for animation fans, featuring a vibrant green body, a single massive eye, and his signature yellow-and-black antennae. The look is typically achieved with a full-body green jumpsuit paired with a custom headpiece or a structured foam tunic.

Difficulty: Medium
Time: ~45 min
Budget: $25–80

See yourself as Plankton →What you need Buy the Plankton costume

Try it on

See yourself as Plankton

One clear photo of yourself; we render you in this costume — face untouched, full body, about 20 seconds.

Choose or drop a photo of yourselfJPG · PNG · HEIC

One render, $1. No account needed — if it fails you're not charged. Pricing.

Your photo is sent to Google's Gemini API to make the render and isn't used for training. Renders are AI-generated and labelled.

Want a different costume on this photo, or a whole group in costume? Open the Try-On Studio.

Plankton costume — Example look · AI-generated

You as Plankton

Result

What you need for a Plankton costume

Short on time? Buy it ready-made

Spirit Halloween sells the complete Plankton costume — one box instead of 5 pieces.

Shop Plankton at Spirit ↗

Green bodysuit or jumpsuit
A solid, bright lime green or kelly green long-sleeve bodysuit or jumpsuit to represent Plankton's copepod body.
DIY: Wear a matching bright green long-sleeve t-shirt and green sweatpants.
Amazon
Plankton eye patch or mask
A large, single circular eye made of white felt or foam with a yellow iris and a black pupil, worn over the face or forehead.
DIY: Cut a large circle from white cardboard, draw a yellow iris and black pupil with markers, and attach it to an elastic band.
Amazon
Antennae headband
Two long, green antennae with black horizontal stripes, attached to a green headband.
DIY: Wrap green pipe cleaners around a headband, paint black stripes on them, and add small foam tips.
Amazon
Krabby Patty formula bottle
A clear plastic bottle containing a rolled-up piece of parchment paper tied with a red string.
DIY: Roll up a piece of paper, tie it with string, and place it inside an empty, clean plastic water bottle.
Amazon
Black unibrow
A thick, bushy black unibrow placed directly above his single eye.
DIY: Cut a thick, wavy unibrow shape out of black felt or faux fur and apply it with skin-safe adhesive.
Amazon

Rather not assemble it? See ready-made Plankton costumes at Spirit Halloween ↗

How to put it together

1
Put on the bright green bodysuit or the matching green shirt and pants combination.
2
Secure the large single-eye mask or patch over your eyes or forehead, ensuring you can still see clearly.
3
Apply the thick black felt unibrow directly above the single eye using skin-safe adhesive or by attaching it to the mask.
4
Place the striped green antennae headband securely on your head, positioning the antennae so they stand upright.
5
Carry the DIY Krabby Patty secret formula bottle prop in your hand to complete the villainous look.

Makeup & hair

If your face is visible, paint your face and neck with bright green water-based face paint to match the bodysuit. Use black eyeliner to draw a dramatic, villainous smirk on your cheek or around your mouth.

Plankton for couples, groups, kids & more

couples: Pair up with Karen Plankton, wearing a silver metallic outfit with a computer screen monitor prop showing her green heart-rate line.
group: Group up with SpongeBob, Patrick Star, and Mr. Krabs for a complete Bikini Bottom ensemble.
kids: Use a green hooded sweatshirt, glue a large felt eye onto the hood, and attach felt antennae to the top of the hood.
Plus size: A loose-fitting green fleece onesie or green track suit provides a comfortable, breathable alternative to a tight spandex bodysuit.
pet: A simple green dog t-shirt with a single felt eye and felt antennae attached to a soft elastic strap.

Tips

Make sure your eye mask has mesh or small cutouts so you can navigate crowded party spaces safely.
Keep your hands free for photos by attaching the Krabby Patty formula bottle to a wrist strap or belt loop.
Practice your best evil laugh and prepare to shout about the Chum Bucket to really get into character.

Plankton costume FAQ

How do you make a DIY Plankton eye?: Cut a large circle out of white craft foam, glue a smaller yellow circle in the center, and add a black circle for the pupil. Attach it to a green beanie or a headband.
What is Plankton's actual name?: His full name is Sheldon J. Plankton, which was kept a secret from his wife Karen for many years.
What does Plankton wear in the show?: Plankton is actually naked most of the time, as his green skin is his natural copepod body, though he occasionally wears a matching green bodysuit.

Did you know? Plankton was originally intended to be a one-time character in the 1999 episode 'Plankton!', but creator Stephen Hillenburg found him so funny that he became the series' primary recurring villain.