What does Fanboy wear on his head?

Fanboy wears a purple cowl that matches his suit. You can easily replicate this with a tight-fitting purple swim cap, skull cap, or beanie worn under the black mask.

How do I make a couples Fanboy and Chum Chum costume?

One person dresses as Fanboy (purple suit, green briefs, yellow gloves, white cape) and the other dresses as Chum Chum (orange shirt with a yellow 'CC' logo, black briefs, white cape, and black mask).

Is this costume comfortable for a party?

Yes, using athletic compression gear or soft cotton pajamas makes this costume highly breathable and easy to move around in all night.

AI-generated example

Fanboy and Chum Chum Costume

Bring the chaotic energy of the ultimate Nickelodeon fanboy duo to life.

Fanboy and Chum Chum are the hyperactive, sci-fi-loving protagonists of the classic Nickelodeon animated series. This guide focuses on Fanboy's iconic look—characterized by his purple and green superhero suit with underwear on the outside—making it a hilarious choice for nostalgic duos and cosplay events. Together with Chum Chum, they represent the ultimate tribute to comic book fandom.

Difficulty: Medium
Time: ~45 min
Budget: $30–70

See yourself as Fanboy and Chum Chum →What you need Buy the Fanboy and Chum Chum costume

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Fanboy and Chum Chum costume — Example look · AI-generated

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What you need for a Fanboy and Chum Chum costume

Short on time? Buy it ready-made

Spirit Halloween sells the complete Fanboy and Chum Chum costume — one box instead of 6 pieces.

Shop Fanboy and Chum Chum at Spirit ↗

Purple long-sleeve shirt and leggings
A matching set of tight-fitting, vibrant purple spandex or polyester athletic wear.
DIY: Use a plain purple long-sleeve t-shirt and purple sweatpants.
Amazon
Bright green briefs
Classic style briefs in neon or bright green, worn conspicuously over the purple leggings.
DIY: Dye a pair of white cotton briefs with bright green fabric dye.
Amazon
Yellow gloves
Bright yellow, elbow-length rubber or fabric gloves with wide cuffs.
DIY: Use standard yellow household cleaning gloves.
Amazon
Black eye mask
A simple black domino-style eye mask that covers the brow and upper cheeks.
DIY: Cut a mask shape out of black felt or craft foam and attach an elastic band.
Amazon
White cape
A short, lightweight white cape that attaches at the shoulders.
DIY: Cut a piece of white polyester fabric and safety pin it to the shoulders of the shirt.
Amazon
Black high-top sneakers
Classic black canvas high-top sneakers with white laces.
DIY: Use any black sneakers you already own.
Amazon

Rather not assemble it? See ready-made Fanboy and Chum Chum costumes at Spirit Halloween ↗

How to put it together

1
Put on the purple long-sleeve compression shirt and matching purple leggings.
2
Pull the bright green briefs on over the purple leggings, ensuring they sit high on the waist.
3
Secure the short white cape to the shoulders of the purple shirt using safety pins or built-in ties.
4
Put on the black high-top sneakers with white socks pulled up slightly.
5
Slip on the bright yellow gloves, pulling the cuffs up over the sleeves of the purple shirt.
6
Place the black domino mask over your eyes, adjusting the strap for a snug fit.

Makeup & hair

Fanboy's hair is hidden under a purple cowl, but you can mimic his look by wearing a purple skull cap or beanie under the mask. Keep makeup simple with a clean face and perhaps a wide, goofy grin.

Fanboy and Chum Chum for couples, groups, kids & more

couples: Pair Fanboy with Chum Chum, who wears an orange shirt with a yellow logo, black briefs on the outside, a white cape, and a black mask.
group: Add Kyle the wizard in his red and yellow striped sweater and black cape, or Boog the bully in his blue convenience store uniform.
kids: Use comfortable cotton pajamas in purple and green for a soft, kid-friendly version of the superhero suit.
Plus size: Opt for loose-fit purple sweatpants and a matching sweatshirt instead of tight compression gear for a comfortable fit.
pet: Dress a small dog in a tiny purple t-shirt with a miniature green band wrapped around their midsection.

Tips

Make sure the green briefs have a strong elastic waistband so they stay securely in place over the slick spandex leggings.
If using rubber dishwashing gloves, sprinkle a little baby powder inside them beforehand to keep your hands dry and comfortable.
Carry a blue plastic cup with a straw to represent a Frosty Freezy Freeze, their favorite drink from the Frosty Mart.
Keep the cape short—it should only reach down to your lower back, just like in the animated series.

Fanboy and Chum Chum costume FAQ

What does Fanboy wear on his head?: Fanboy wears a purple cowl that matches his suit. You can easily replicate this with a tight-fitting purple swim cap, skull cap, or beanie worn under the black mask.
How do I make a couples Fanboy and Chum Chum costume?: One person dresses as Fanboy (purple suit, green briefs, yellow gloves, white cape) and the other dresses as Chum Chum (orange shirt with a yellow 'CC' logo, black briefs, white cape, and black mask).
Is this costume comfortable for a party?: Yes, using athletic compression gear or soft cotton pajamas makes this costume highly breathable and easy to move around in all night.

Did you know? Fanboy and Chum Chum was Nickelodeon's first computer-animated original series and was actually spun off from a short on Nicktoons Network's Random! Cartoons.