Mario characters are about the easiest theme I know for a mixed group, because every one of them is a block of colour with one shape on top: a cap, a crown, a shell or a spotted mushroom. Kids recognize them from across a street, and so do grandparents. Most of the base pieces are already in a closet or at the thrift store, and the rest is felt, craft foam and a few evenings at the sewing machine. I've written each one below with the colour base first, then the headpiece, then a prop light enough to carry all night. You'll find heroes, princesses, enemies and power-up versions, with notes on which suit small kids and which are better left to adults.
Making Round Headpieces and Shells Hold Their Shape
Half of these characters depend on a round shape: Toad's cap, the Koopa and Bowser shells, the Goomba's head, Chain Chomp's whole body. A shape that sags by the second house looks like a different character, so I sort out the structure before any decoration.
Start From Something Already Round
A wide-brimmed sun hat, a round backpack or a cheap plastic bowl does the shaping for you. I cover the base in fabric instead of building a dome from scratch. It's quicker, and a real base keeps its form when it gets knocked in a crowd.
Foam or Felt
Thin craft foam is fine for flat details such as emblems, buttons and spikes, but it creases if you bend it hard. Thicker EVA foam takes a curve when you warm it with a hair dryer and holds it once it cools, so it suits shells. Felt can't hold a shape on its own. Stiffened felt can, and so can felt laid over a foam base.
Attaching Pieces So Kids Can't Pull Them Off
Hot glue grips foam well, but it lets go of fabric that flexes and turns brittle on a cold night. On anything a child will tug, I stitch. A few stitches through each felt circle on a mushroom cap will outlast any glue. Fabric glue is a fair middle ground for flat pieces, as long as you let it dry overnight.
1. Classic Mario Costume With Blue Overalls
A red long-sleeve shirt and blue denim overalls get you most of the way there. I cover the overall buttons with large yellow felt circles, because the real metal buttons are too small to read at a distance. The red cap needs a white emblem: I cut the circle from white felt and the M from red, then stitch rather than glue, since glued felt lifts off a cap within an hour of being handled. White gloves and brown work boots or sneakers finish the body. A stick-on mustache is the face, and its curve matters more than its size. Long hair goes in a low bun under the cap. A foam wrench or a cardboard question block weighs next to nothing, which matters on a long trick-or-treat route.
2. Classic Luigi Costume With Green Shirt
If you own denim overalls, Luigi is basically a shirt change. Put them over a vivid green shirt and add oversized yellow button covers in felt or craft foam, then a green cap, white gloves and brown boots. Make his mustache a touch slimmer than Mario's so the brothers don't look identical side by side. The cap hides most of the hair. For a Luigi's Mansion twist, I'd use a silver-painted backpack with a length of flexible dryer duct as the hose; it bends without kinking and weighs almost nothing. Keep it compact for crowds. A bit of green eye shadow is optional.
3. Princess Peach Costume With Pink Gown
Peach is all about volume in the skirt and puff at the shoulder. A floor-length pink gown is the easy route, but a fitted pink top with a full maxi skirt works as well and is easier to find in adult sizes. Add puffy sleeves, a darker pink overskirt and white elbow-length gloves. Her wig is golden blonde with side-swept bangs and loose curls, and her makeup is rosy blush, pink lipstick and a little light blue shadow. The crown carries the character, so cut it from gold craft foam with a red gem at the centre and blue gems at the sides. I'd put her in ballet flats or low block heels, because a floor-length hem and high heels on a dark sidewalk is how ankles get turned. A star wand or pink parasol is her photo prop.
4. Princess Daisy Costume With Yellow Dress
Daisy is yellow and orange, and the orange trim is what stops her from looking like a plain yellow dress. Start with a yellow maxi dress with puff sleeves or a full skirt, then add orange trim at the waist, neckline and hem. Bias tape is the quickest trim to sew around a curved hem, and it doesn't fray. White gloves and orange flats keep the colours going. Her auburn wig is shoulder length with flipped ends and side bangs. The flower crown cuts well from gold craft foam with turquoise gems. Peach blush and coral lipstick keep her makeup warm, and flower earrings add one more clue. She sits naturally next to Peach, Mario or Luigi in any group.
5. Rosalina Costume With Blue Star Gown
Rosalina's gown is pale turquoise, and an old bridesmaid dress is often the cheapest place to start. An off-the-shoulder formal dress, or a long skirt and matching top in pale aqua, works too. Sew silver star appliqués near the hem and pin a sparkling brooch at the neckline. The wig is long platinum blonde with a deep side part and one section swept across the forehead; I pin that section with a clear grip so it stays over one eye without falling into it. Silver shadow, soft pink lips and a touch of highlighter keep her luminous. Silver flats beat heels under a long gown. A small crown and a star wand finish her, and a plush star can ride on her shoulder with hidden safety pins.
6. Toad Costume With Mushroom Hat
Toad lives or dies by the cap. Everything else is white pants, a white long-sleeve shirt and a royal blue vest with gold or yellow trim. For the mushroom, I cover a wide-brimmed white sun hat with white fabric and stitch on big red felt circles; the brim gives you the round mushroom shape without any foam. Tuck all the hair under so the dome stays clean. Rosy cheeks and a smile are enough makeup. Brown loafers or slip-ons are fine for walking, and a plush mushroom or small map is the prop. It's modest, easy to move in and one of the best picks here for a teacher or a small child.
7. Toadette Costume With Pink Mushroom Cap
Toadette is Toad's pink twin, and her braids are the detail that sets her apart. She wears white leggings under a sleeveless pink dress, or a long pink vest over a white shirt, with gold edging in ribbon or fabric paint. The cap is a pink fabric-covered hat with large white circles. For the braids, I stuff two tubes of pink fabric with fiberfill and stitch them to the hat, with small white-spotted mushrooms at the ends. Keep the stuffing light or they'll drag the hat sideways. Pink blush, mascara and gloss are plenty, and red or pink Mary Janes finish her. A small backpack or plush star makes a useful prop, and she belongs beside a Toad for siblings or a parent and child.
8. Yoshi Costume With Green Hoodie
A green hoodie and matching joggers make a Yoshi that a child will actually keep on. Sew a white belly panel to the front and a row of small orange felt spikes along the hood and upper back. Big felt eyes and two nostril dots on the hood give you his face with no mask at all. Orange sneakers or shoe covers make the feet. The red saddle on the back goes on with hook-and-loop tape so it comes off before a car ride. I use fleece for the belly when I can, because felt pills fast on a hoodie that's being hugged and sat on. A white craft egg with green spots, or a plush one, is the prop.
9. Bowser Costume With Spiked Shell
Bowser looks big, but he shouldn't feel big. Start with an olive-green sweatshirt and pants, then a tan felt belly panel. I build the shell on a round backpack and cover it in green fabric, so it has straps, a real shape and somewhere to keep a phone. Soft cones of stuffed white felt form the spikes; never put anything rigid on a shell people will bump into. Orange felt hair attaches to a hood or headband along with curved felt horns. A little green makeup around the eyes and heavy dark brows give the cartoon scowl. Black wristbands with soft white studs and claw covers over sneakers finish him. A plush fireball or a cardboard castle sign keeps the prop friendly for public events.
10. Bowser Jr. Costume With Bib Mask
Bowser Jr. is the comfy version, and the bib is what tells people who he is. He wears a bright yellow hoodie and sweatpants with a pale tan belly panel and a green foam shell with soft white spikes. Orange felt hair runs along the hood, with small fabric horns at the face. The famous painted mouth goes on a white bandana bib tied loosely at the neck, so nothing covers the eyes. Fabric markers work well on a cotton bandana; let the drawing dry, then press it with an iron if the markers say they're heat-set. A little yellow makeup at the temples and dark eyebrows are enough. Green sneakers with felt claws and a foam paintbrush prop finish him.
11. Wario Costume With Purple Overalls
Wario is loud on purpose: purple overalls over a bright yellow shirt, a yellow cap with a blue emblem, green pointed shoe covers and white gloves. The zigzag mustache is his face, so draw it with skin-safe black makeup or cut a soft stick-on one into a sharp zigzag. A dab of pink blush on the nose helps. Padding at the shoulders or stomach adds bulk, but I only put it in if the wearer can still bend and sit, and a thin cushion insert under the overall bib is usually plenty. Carry a gold drawstring bag or cardboard coins. Next to Waluigi, Mario and Luigi, he completes the set.
12. Waluigi Costume With Black Overalls
Waluigi is all long lines. Black or very dark navy overalls go over a purple shirt, with orange or yellow felt circles on the buttons and a purple cap with a yellow emblem. White gloves, a thin angular mustache drawn in black costume makeup, sharp eyebrows and a touch of purple shadow give the sneer. Dark brown boots or pointed shoe covers stretch the silhouette. Tall people can lean in with fitted pieces; anyone shorter can wear high-waisted overalls, which lengthen the leg. A light tennis racket or a purple foam flower is a safe prop. Pair him with Wario for a duo that takes almost no effort.
13. Donkey Kong Costume With Red Tie
Fleece is my choice for Donkey Kong, and it's the reason this one is warm enough for a cold trick-or-treat night. A brown hoodie and pants form the base, with a lighter tan chest panel and rounded felt ears. A short tuft of dark faux fur on the hood is a nice touch; cut faux fur from the back with a craft knife, through the backing only, or you'll shed fluff everywhere. Brown makeup at the temples and strong brows help the animated look. Add brown gloves and sneakers or foot covers. The wide red necktie with yellow felt initials is the splash of colour that sells it. A cardboard barrel or banana plush is the prop. Keep it loose for kids, and pair him with Diddy Kong.
14. Diddy Kong Costume With Red Cap
Diddy Kong is brown basics plus a lot of red. Start with a brown sweatshirt and joggers, a lighter felt belly panel and a thin stuffed tail. I sew the tail to a strip of elastic at the waist instead of pinning it, because pins pop open when a kid sits down. Over the top goes a red T-shirt with yellow felt stars, then a red cap, rounded felt ears and small brown gloves. Hair hides under the cap, and warm bronzer with a little cheek colour is enough makeup. Red canvas sneakers keep it walkable. Carry a banana plush or a light barrel. It's one of the best choices here for a kid who won't stand still, and it pairs with a Donkey Kong in photos.
15. Boo Costume With White Cape
Boo is cute, not scary, and the trick is putting the face on the garment rather than on you. Wear a white sweatshirt dress or rounded poncho over white leggings, with small fabric arms at the sides and a gently scalloped hem. Black and pink felt shapes across the front make his expression. Hair goes in a smooth bun, or under a short white wig. Pearl highlighter and pale pink blush keep the face bright. Add white sneakers and soft felt fangs at the neckline. Because a poncho goes over anything, I'd layer a thermal top underneath on a cold night and nobody will know. A small ghost-house sign is the prop.
16. King Boo Costume With Gold Crown
King Boo is Boo with a crown, so the crown deserves the effort. Start with an oversized white hooded poncho over white pants or leggings, soft fabric arms, a rounded hem and big cartoon eyes with a grin on the front. The gold crown with red and blue faux gems sits over the hood or a short white wig. I glue a strip of non-slip shelf liner inside the crown band so it doesn't slide around on slippery hood fabric. Pearly shimmer, lavender shadow and defined brows give a ghostly polish. White sneakers and a purple gem brooch finish him, with a small ornate frame or silver key as the prop. He's good solo, and better standing next to a Luigi.
17. Goomba Costume With Brown Tunic
This is the no-sew one. Cut two matching mushroom shapes from brown felt, join them at the shoulders and sides with fabric glue or a few safety pins, and leave the sides roomy. Underneath goes a tan long-sleeve shirt with brown leggings. Large white-and-black eyes, heavy felt eyebrows and two white fangs go on the front of the tunic, and a brown beanie keeps the round head shape. Strong brows and a little brown shadow echo the frown. Dark brown sneakers or foam shoe covers finish it. I use stiff felt for the tunic rather than the floppy craft kind, since stiff sheets hold the mushroom outline instead of drooping. A cardboard brick block makes a good photo prop. It costs little and suits any age.
18. Koopa Troopa Costume With Green Shell
Koopa Troopa starts with a sunny yellow shirt and matching pants or leggings, a pale tan belly panel and a rounded green shell. The shell can be foam, felt or a fabric-covered backpack; I like the backpack again because it gives you straps and storage. White edging around the shell is what makes it read as a Koopa shell instead of a green blob. A yellow beanie with felt eyes is the head, and the face stays uncovered. Yellow eye makeup and a little green liner are optional. Green sneakers and white gloves finish it. For a warm indoor party, swap to a T-shirt and shorts. A plush shell or checkered flag is the prop.
19. Shy Guy Costume With Red Hood
Shy Guy is the only character here who really needs a face covering, so that's where I'm careful. The robe is a loose red hoodie with joggers, or a knee-length tunic, with a wide brown belt and dark blue sneakers. The white mask should be a light blank costume mask with large eye openings and small painted mouth details, and I punch a few extra air holes near the mouth. It has to come off with one hand. Pull the red hood over the mask and tuck hair underneath. If a child finds the mask too much, paint a simple white oval around the eyes and mouth instead. White gloves and a foam key or plush turnip complete the character.
20. Piranha Plant Costume With Green Jumpsuit
The Piranha Plant is a stem and a head, and the head should be a hood or padded headband so the face stays visible. The stem is a green jumpsuit, a maxi dress, or a shirt and pants, with layered green felt leaves at the waist, shoulders and ankles. For the red-and-white spotted head, I build a padded hood with white felt teeth around the opening, set back far enough that they never flop near the eyes. Green shadow, red lipstick and small white makeup dots carry the spots onto the face. A green cylinder around the hips suggests the pipe; make it from flexible craft foam so you can still sit. Green boots and leaf-shaped gloves finish it.
21. Chain Chomp Costume With Black Bubble Tunic
Chain Chomp is a round black ball with teeth, and the funniest version is the simplest. Use a black bubble dress, an oversized sweatshirt or a foam-lined circular tabard over black leggings. A hoop of craft foam stitched inside the hem of a sweatshirt pushes it out into a ball. Big white eyes and a wide felt mouth with soft triangle teeth go across the front. Hair goes in a high bun under a black beanie. Silver-grey shadow and crisp liner hint at the metal, and black sneakers with white soles keep it clean. For the chain, I sew big silver fabric loops down the back, ending at a soft grey foam block. Keep it compact for busy rooms.
22. Lakitu Costume With Cloud Skirt
Lakitu is half turtle and half cloud, and the cloud is the fun part. Up top go a yellow hoodie and green pants with a pale belly panel, round glasses, a green shell backpack and a small yellow headpiece with felt eyes. Warm yellow eye makeup and peach blush keep the face bright. For the cloud, I gather a white tulle skirt or stitch clusters of fiberfill to a fabric belt. Tulle is lighter, fiberfill looks puffier, and either way I keep it above the knee so you can climb steps. White sneakers blend into the cloud. Carry a checkered flag or a small camera. Nothing about it is moulded, so it stays comfortable for hours.
23. Kamek Costume With Blue Robe
Kamek reads as a wizard, but a friendly one. Start with a loose royal blue robe or oversized blue sweatshirt dress, with pale yellow trim on the sleeves and hem and simple yellow circles down the front. White leggings and brown ankle boots go underneath. The pointed blue hat with a yellow band gives the silhouette; I cut it from stiff felt and run a ring of wire inside the brim so it doesn't flop over the eyes. Add round glasses and keep hair neat under the hat. Blue shadow and gold shimmer keep the makeup cheerful. A foam wand with a bright geometric top is the prop, or a plush block if props are restricted. A tuft of red felt hair peeking from under the hat is a good accurate touch.
24. Birdo Costume With Pink Dress
Birdo is bright pink with a big red bow, and her snout sits on top of the head so your face stays clear. Wear a pink sweater dress or a pink top and skirt over opaque tights, with a pale belly panel and a red bow at the neckline. The headpiece is a pink hood with large felt eyes and a rounded red snout above the forehead; stuff the snout firmly enough that it points forward instead of drooping. Hair goes in a bun under the hood, or choose a short pink wig. Rosy blush, pink shadow and glossy red lips match the colours. Red ankle boots or sneakers finish her. A white craft egg with pink spots is her prop, and she suits a group with Yoshi.
25. Pauline Costume With Red Gown
Pauline is the dressy option for someone who'd rather wear a gown than a felt shell. Pick a floor-length red gown with a fitted waist and a slit that lets you walk, with red heels or flats depending on the night. Her long dark brown wig has polished waves with one side pinned back by a gold clip. Defined eyeliner, warm blush and classic red lipstick suit her, with gold earrings and a bracelet. A vintage-style microphone made from a foam ball on a cardboard tube is her prop, or a small gold clutch where props aren't allowed. If you'll be dancing, a tailored red jumpsuit gives you the same block of red with far more freedom.
26. Fire Mario Costume With White Overalls
Fire Mario works best standing next to a regular Mario, because the swapped colours show the power-up at a glance. Wear white overalls over a vivid red shirt with yellow felt button covers, plus a white cap with a red emblem. White gloves and red sneakers or work boots carry the colours down. The curved black mustache goes on as usual, and a little gold shimmer is optional. White overalls pick up every mark, so I'd prewash a thrifted pair and treat them with a fabric protector spray before the night. Carry a plush orange fireball with yellow felt swirls, never anything that actually gets hot.
27. Tanooki Mario Costume With Brown Ears And Tail
Tanooki Mario is the cosy one, which makes it my pick for a freezing night. Start with brown overalls or a brown fleece jumpsuit over a darker long-sleeve shirt, then a tan belly panel, white gloves and brown sneakers. The brown cap gets a simple emblem and rounded ears. The striped faux-fur tail hangs from a sturdy fabric loop at the back; keep it short enough to clear the ground, because a dragged tail picks up leaves and gets stepped on. Apply the curved mustache and a little bronze around the eyes, with hair tucked so the ears show. A felt leaf is the power-up prop. Thermals go under the fleece without changing the shape at all.
28. Cat Peach Costume With Pink Jumpsuit
Cat Peach swaps the gown for a pink cat suit, which makes her far warmer and easier to walk in. Wear a pale pink fleece jumpsuit, or a pink hoodie and pants, with a white belly panel, white gloves and white boot covers. Cat ears sit on a small gold crown headband, and a long pink tail attaches high enough to stay off the floor. The blonde wig with side bangs goes loose behind the ears. Pink blush, small whisker lines, a cat nose and light blue shadow make up the face, and soft cuffs at the wrists and ankles suggest paws. Carry a plush bell. Whiskers drawn in eyeliner smudge onto a hood, so I set them with a dusting of powder.
29. Mario Kart Racer Costume With Checkered Accessories
The racer version is regular Mario with a sporty twist. Blue overalls go over a red athletic shirt, with a red cap, white gloves, red-and-white sneakers and a temporary mustache. Checkered wristbands or a racing vest with felt patches add the theme, and a cardboard steering wheel is the easy prop. A wearable kart is a decorated shallow box on shoulder straps; I keep it short from front to back, because a long box catches on doorframes and hides the stairs from the wearer. Leave plenty of room for the legs. A plush banana or shell on the side is a fun extra. The idea adapts well to wheelchairs and wagons, where the kart can be built around the chair itself.
30. Super Mario Group Costume With Eight Characters
For a full group, I'd cast Mario, Luigi, Peach, Daisy, Toad, Yoshi, Bowser and a Goomba. Give each person a colour-coded base, a headpiece, shoes they can walk in, simple makeup and one light prop. Mario and Luigi wear overalls, the princesses wear pink and yellow dresses with crowns, Toad gets the spotted cap, Yoshi the green hoodie, Bowser the soft spiked backpack and the Goomba a brown felt tunic over leggings. Buying the felt and craft foam for the whole group at once means the yellows and reds actually match. For photos, put the taller heroes and villains at the back, the princesses in the middle and the smaller characters in front.
Casting a Mixed-Age Group
Who gets which character matters as much as the sewing. These are the rules I follow when a family or a group of friends dresses together:
- Give the bulky pieces to adults. Bowser's shell and a wearable kart are awkward for small kids in a crowd.
- Toddlers do best as hoodie characters like Yoshi, Boo or Diddy Kong, where nothing covers the face and nothing pinches.
- Settle the colour of overall buttons, crowns and trim for the whole group at once, so the yellows match in photos.
- Stick-on mustaches fall off with sweat and snacks. Draw them with a skin-safe makeup pencil, or keep a spare stuck inside the cap.
- If the night is cold, pick characters that layer well. Toad, Boo, Tanooki Mario and Cat Peach all hide a thermal underneath.
Have everyone try their costume on the weekend before. It's the only way to catch the cap that slides or the shell strap that digs in while there's still time to fix it.
A Mushroom Kingdom Lineup That Lasts All Night
Start with the colour block, then add the single piece that names the character: the cap, the crown, the shell or the mushroom. One light prop and simple makeup do the rest. A thrifted base keeps the cost down, and felt with craft foam covers almost every detail without advanced sewing. Plan for hours of wear rather than one photo, which means uncovered eyes, shoes that walk and room for layers if the night turns cold. One person in overalls or eight in a lineup, the same rule holds.
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