Onesie Character Costumes

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Main Content
Infant Lion Onesie Costume

Infant Lion Onesie Costume

$49.99 - $59.99
Toddler Orange Fox Onesie Costume

Toddler Orange Fox Onesie Costume

$29.99$19.99
Frog Onesie Kid's Costume

Frog Onesie Kid's Costume

$49.99$39.99
Lion Onesie Kid's Costume

Lion Onesie Kid's Costume

$39.99$17.99 - $24.99
Tigress Onesie Girl's Costume

Tigress Onesie Girl's Costume

$49.99$19.99 - $49.99
Gingerbread Man Onesie Costume for Toddlers

Gingerbread Man Onesie Costume for Toddlers

$39.99$34.99
Kid's Gingerbread Man Onesie Costume

Kid's Gingerbread Man Onesie Costume

$49.99$39.99
Frog Onesie Toddler Costume

Frog Onesie Toddler Costume

$39.99 - $49.99
Disney Oogie Boogie Kid's Onesie Costume | Disney Costumes

Disney Oogie Boogie Kid's Onesie Costume | Disney Costumes

$59.99$49.99
Pink Fox Baby Onesie Costume

Pink Fox Baby Onesie Costume

$29.99$19.99 - $29.99
Tiger Onesie Kid's Costume

Tiger Onesie Kid's Costume

$54.99$19.99 - $39.99
Yellow Duck Onesie for Children

Yellow Duck Onesie for Children

$39.99$24.99 - $39.99
Toddler Shark Onesie Costume

Toddler Shark Onesie Costume

$39.99
Adult Dr. Seuss Thing 1 & 2 Costume Onesie | Dr. Seuss Costumes

Adult Dr. Seuss Thing 1 & 2 Costume Onesie | Dr. Seuss Costumes

$59.99$49.99
Adult Gremlins Gizmo Costume Onesie

Adult Gremlins Gizmo Costume Onesie

$69.99$49.99
Panda Adult Onesie Costume

Panda Adult Onesie Costume

$69.99$19.99 - $49.99
Disney Oogie Boogie Adult Onesie Costume | Disney Costumes

Disney Oogie Boogie Adult Onesie Costume | Disney Costumes

$69.99 - $89.99
Eeyore Pajama Costume

Eeyore Pajama Costume

$99.99$89.99
Fox Onesie Infant Costume | Infant Animal Costumes

Fox Onesie Infant Costume | Infant Animal Costumes

$39.99
Child Cozy Penguin Onesie Costume | Animal Costumes

Child Cozy Penguin Onesie Costume | Animal Costumes

$29.99$24.99 - $29.99
Pixar Sulley Adult Costume Onesie | Monsters Inc Costumes

Pixar Sulley Adult Costume Onesie | Monsters Inc Costumes

$99.99$79.99
Pooh Pajama Costume

Pooh Pajama Costume

$99.99$89.99
Patrick SpongeBob Boy's Costume Onesie | Nickelodeon Costumes

Patrick SpongeBob Boy's Costume Onesie | Nickelodeon Costumes

$59.99$39.99
Disney Toddler Jack Skellington Onesie Costume | Nightmare Before Christmas Costumes

Disney Toddler Jack Skellington Onesie Costume | Nightmare Before Christmas Costumes

$59.99$49.99 - $59.99
Child SpongeBob SquarePants Costume Onesie | SpongeBob Costumes

Child SpongeBob SquarePants Costume Onesie | SpongeBob Costumes

$49.99$39.99
Disney Jack Skellington Kid's Onesie Costume | Disney Costumes

Disney Jack Skellington Kid's Onesie Costume | Disney Costumes

$69.99$54.99 - $69.99
Yellow Duck Onesie for Toddlers

Yellow Duck Onesie for Toddlers

$39.99$29.99
Infant Disney Jack Sparrow Costume Onesie | Disney Costumes

Infant Disney Jack Sparrow Costume Onesie | Disney Costumes

$39.99$29.99 - $49.99
Elf Jumpsuit Kid's Costume

Elf Jumpsuit Kid's Costume

$49.99$24.99
Woman's Funshine Bear Romper Costume

Woman's Funshine Bear Romper Costume

$59.99
Toddler Jack-O-Lantern Onesie

Toddler Jack-O-Lantern Onesie

$39.99$17.99
Sloth Kid's Onesie Costume | Animal Costumes

Sloth Kid's Onesie Costume | Animal Costumes

$49.99$39.99 - $49.99
Sesame Street Adult Elmo Onesie Costume

Sesame Street Adult Elmo Onesie Costume

$59.99 - $79.99
Funny Bunny Toddler Onesie

Funny Bunny Toddler Onesie

$39.99$10.99 - $39.99
Stay Puft Marshmallow Man Costume Onesie for Kids

Stay Puft Marshmallow Man Costume Onesie for Kids

$59.99$49.99
Child Garfield Costume Onesie | Garfield Costumes

Child Garfield Costume Onesie | Garfield Costumes

$59.99
Narwahl Adult Onesie Costume

Narwahl Adult Onesie Costume

$59.99$49.99 - $59.99
Lion Onesie Toddler Costume | Animal Costumes

Lion Onesie Toddler Costume | Animal Costumes

$34.99$9.99 - $17.99
Thing 1&2 Plus Size Costume

Thing 1&2 Plus Size Costume

$54.99
Toddler Polar Bear Costume Onesie | Kid's Bear Costumes

Toddler Polar Bear Costume Onesie | Kid's Bear Costumes

$39.99$34.99 - $39.99
Child Jack O' Lantern Onesie Costume | Pumpkin Costumes

Child Jack O' Lantern Onesie Costume | Pumpkin Costumes

$39.99$17.99
Pink Dinosaur Girl's Onesie

Pink Dinosaur Girl's Onesie

$39.99
Mighty Moose Infant Costume

Mighty Moose Infant Costume

$39.99$34.99
Frog Infant Onesie Costume | Infant Animal Costumes

Frog Infant Onesie Costume | Infant Animal Costumes

$39.99$29.99
101 Dalmatians Lucky Costume Onesie | Disney Kid's Costumes

101 Dalmatians Lucky Costume Onesie | Disney Kid's Costumes

$49.99$29.99
Black Cat Onesie for Kid's

Black Cat Onesie for Kid's

$29.99$24.99
Child Cheshire Cat Costume Onesie | Alice in Wonderland Costumes

Child Cheshire Cat Costume Onesie | Alice in Wonderland Costumes

$39.99
Child Ghostbusters Slimer Costume Onesie | Ghostbusters Costumes

Child Ghostbusters Slimer Costume Onesie | Ghostbusters Costumes

$49.99$29.99

About Onesie Character Costumes

Embrace the fun and comfort of our delightful collection of onesie character costumes at HalloweenCostumes.com. Perfect for infants, toddlers, and kids, these cozy outfits transform little ones into their favorite characters, making them ideal for Halloween, playdates, or themed events. Each onesie is designed with soft, high-quality materials that ensure comfort and warmth, allowing your child to move freely while looking adorable. With a variety of whimsical designs ranging from playful animals to festive themes, our onesies spark imagination and creativity, making dress-up time an exciting adventure. Whether your little one wants to be a cuddly creature or a festive character, our collection offers something for every personality and occasion.

Our onesie character costumes are not only cute but also practical, featuring easy closures for quick changes and diaper access. The thoughtful designs include hoods, tails, and fun details that enhance the overall look while keeping your child comfortable throughout the day. These costumes are perfect for family gatherings, Halloween parties, or simply lounging at home while embracing the spirit of play. With a focus on durability and ease of wear, our onesies are made to withstand the adventures of active little ones. At HalloweenCostumes.com, we believe that every child should have the chance to express themselves through imaginative play, and our onesie character costumes make it easy and fun to do just that.

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