What does Bowser Jr. wear on his face?

Bowser Jr. wears a white bandana (or bib) over his mouth that features a hand-drawn, scary-looking fanged mouth to make him look more intimidating.

How do I make a DIY Bowser Jr. shell?

You can make a lightweight shell by painting a large foil roasting pan green, adding white paper cups or foam cones as spikes, and hot-gluing elastic straps to the back.

What is Bowser Jr.'s weapon?

His signature weapon is the Magic Paintbrush, which he uses to paint graffiti and create portals. You can easily recreate this with an oversized toy paintbrush dipped in blue paint.

AI-generated example

Bowser Jr. Costume

Cause mischief in the Mushroom Kingdom as Bowser's favorite koopa kid.

Bowser Jr. is the mischievous, paintbrush-wielding son of Bowser and a recurring antagonist in the Super Mario franchise. Fans love dressing up as him for his playful, villainous energy and highly recognizable design. His signature look centers around a white bandana bib with a hand-drawn fanged mouth, a green spiked shell, and a fiery orange ponytail.

Difficulty: Medium
Time: ~45 min
Budget: $25–75

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Bowser Jr. costume — Example look · AI-generated

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Result

What you need for a Bowser Jr. costume

Short on time? Buy it ready-made

Spirit Halloween sells the complete Bowser Jr. costume — one box instead of 6 pieces.

Shop Bowser Jr. at Spirit ↗

Yellow bodysuit or sweatsuit
A solid yellow long-sleeve jumpsuit, unitard, or matching sweatshirt and sweatpants set to represent his reptilian skin.
DIY: Use a plain yellow sweatshirt and yellow sweatpants.
Amazon
White bandana bib
A large white triangular bandana worn around the neck, featuring a hand-drawn black and red fanged mouth design.
DIY: Cut a triangle from white fabric and draw the fanged mouth using red and black fabric markers.
Amazon
Green spiked shell
A green turtle shell backpack or foam shell with white spikes and a white rim.
DIY: Paint a cardboard oval green, glue on white paper cones for spikes, and attach elastic shoulder straps.
Amazon
Orange ponytail wig
A bright orange wig styled into a high, single topknot ponytail to mimic his tuft of hair.
DIY: Tie a section of a cheap orange wig into a high topknot and trim the rest short.
Amazon
Black spiked wristbands
Two black faux-leather cuff bracelets with silver metallic studs or spikes.
DIY: Cut black felt strips, glue on silver paper cones, and secure them around your wrists with velcro.
Amazon
Magic Paintbrush
A large, oversized paintbrush prop with a silver handle and a blue-tipped brush.
DIY: Paint a cardboard tube silver, attach a bunch of yarn to the end for bristles, and dip the tips in blue paint.
Amazon

Rather not assemble it? See ready-made Bowser Jr. costumes at Spirit Halloween ↗

How to put it together

1
Put on the yellow bodysuit or matching yellow sweatsuit as your base layer.
2
Tie the white bandana around your neck, positioning the fanged mouth drawing flat against your chest.
3
Strap the green spiked shell onto your back using the shoulder straps.
4
Put on the orange wig, ensuring the high topknot ponytail sits prominently on the crown of your head.
5
Fasten the black spiked wristbands around both wrists.
6
Carry the oversized magic paintbrush prop in your hand to complete the look.

Makeup & hair

Apply a touch of green face paint around the eyes to mimic his green head scales, or keep it simple with a clean face. Style the orange wig's ponytail so it stands upright using heavy-duty hairspray.

Bowser Jr. for couples, groups, kids & more

couples: Pair up with Bowser for a father-son duo, or with Princess Peach (whom Bowser Jr. often tries to kidnap).
group: Join forces with Mario, Luigi, and Yoshi for a full Super Mario Bros. group theme.
kids: An incredibly popular kids' look that can be easily made using a cozy yellow fleece onesie.
Plus size: A yellow fleece tracksuit provides a comfortable, warm, and highly adjustable fit for all body types.
pet: A green spiked shell harness paired with a small white fanged bandana around your dog's neck.

Tips

If using a backpack-style shell, use it to store your phone, wallet, and keys during events.
Keep the bandana snug but comfortable; fabric markers need to dry completely before you wear it to avoid smudging.
For outdoor events, a yellow fleece sweatsuit keeps you warm while perfectly matching the character's color scheme.

Bowser Jr. costume FAQ

What does Bowser Jr. wear on his face?: Bowser Jr. wears a white bandana (or bib) over his mouth that features a hand-drawn, scary-looking fanged mouth to make him look more intimidating.
How do I make a DIY Bowser Jr. shell?: You can make a lightweight shell by painting a large foil roasting pan green, adding white paper cups or foam cones as spikes, and hot-gluing elastic straps to the back.
What is Bowser Jr.'s weapon?: His signature weapon is the Magic Paintbrush, which he uses to paint graffiti and create portals. You can easily recreate this with an oversized toy paintbrush dipped in blue paint.

Did you know? Bowser Jr. made his first appearance in Super Mario Sunshine (2002), where he used his magic paintbrush to disguise himself as Shadow Mario.