Monsters Inc. Costumes: Mike, Boo, & Sulley Costumes | HalloweenCostumes.com (2024)

Monsters are a standard staple when it comes to Halloween havoc. They come in all shapes and sizes, not to mention style! You've got your fuzzy-wuzzies. Those are your werewolves, abominable snowmen, and the classic companion, the bigfoot. (Or would it be bigfeet?) Anyway, then you have the bitey-wighties. That category includes your vampires, brain-eating zombies, and run-of-the-mill creatures known for gnawing. Finally, there are the kooky-spookies, the classy-casties, and the build-a-boos, which close out our classic monsters with the ghosts, witches, and your Frankenstein-style monsters, respectively. But, if you really want to stand out and earn your marks in Monstropolis, you might need to become a monster who isn't so easily categorized!

Well, we’re here to help give you the full tour of Monsters Inc. and Monsters University so you can find the costume of your nightmares (and that’s a good thing). Each of the epic characters from your favorite Pixar films are pretty unique in their own right. Sulley appears to be what happens when cotton candy from the Carnival gets transformed into a huggable brute. Mike is like a Beholder from Dungeons & Dragons if it traded its extra eyes for technical talents. And just wait until you see what happens when the legendary Medusa really lets her inner beauty shine! With so many options, we better get moving. Let’s incorporate some lovable monsters into your costume couture!

If you're looking for amazing Monsters Inc costume ideas, just imagine that your goal is to work at the epic power plant of Monstropolis. Think of this as your very first interview to join the team of Monsters Inc. Will you get tossed into the mailroom? It is hardly the illuminating career that you were aiming for, right? Sure, it is important to be part of public service, but you probably imagined joining the police force or becoming a firefighter if you were going to go that route.

. Even postal carriers are pretty brave. But we see more in you than sorting bills in the cellars of the office. Usually, the first step is proving yourself (or knowing another monster who will give you a solid recommendation). Fortunately, that’s why we’re here! In no time, you’ll be suited up and moving through the ranks. Sure, you could get a creepy sea serpent costume and dress up in a mock Randall costume. But wouldn’t you rather leap right into the shoes of your favorite Monsters Inc characters!? Take a look at these ideas and let out the roar and giggles that will give your Halloween night all the energy it will ever need.

Boo Monsters Inc. Costume

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It takes a really bright gal to turn around an entire society. Monstropolis got into a pretty rough rut, but that's nothing compared to the never-ending energy of a tyke like Boo! If you've got a little one who wants to join the ranks of monster society and brighten up the world, we can think of no better costume than the very one that Boo wore! We guess it is a Boo costume, then?

Celia Monsters Inc. Costume

Monsters Inc. Costumes: Mike, Boo, & Sulley Costumes | HalloweenCostumes.com (2)

Who is the most popular monster in all of Monstropolis? You’d think it would have been Sulley. He’s really the monster who turned things around. But with the writhing hairstyle and can-do attitude, nobody comes close to Celia! Take command of the monster and the human world when you summon up the serpents of style thanks to a Celia costume from Monsters Inc.

Sulley Costume for Kids

Monsters Inc. Costumes: Mike, Boo, & Sulley Costumes | HalloweenCostumes.com (3)

There’s no denying that sometimes our kids can be little monsters. Still, we can’t help but see that they’re pretty darn cute at the same time. What better monster role model is there than Sulley!? He’s got a great job. He clearly cares about his community. And with all of that fuzz, he’s the comfiest cuddler out there. There’s no downside when it comes to suiting your kids up in a Sulley costume!

Adult Sulley Monsters Inc Costume

Monsters Inc. Costumes: Mike, Boo, & Sulley Costumes | HalloweenCostumes.com (4)

Everyone wants to feel like a hero... but do you really want to run around wearing a cape all the time? It turns out that all you need to do to be recognized as a monstrous marvel is to garb yourself in the style of Sulley! The bright blue and purple fur will make you an instant hit, whether you're running around with the kids or showing off the best Monsters Inc costumes adults can get their paws on!

Mike Wazowski Halloween Costume

Monsters Inc. Costumes: Mike, Boo, & Sulley Costumes | HalloweenCostumes.com (5)

What’s green and round filled with wisecracks? Well, it isn’t a wheel of moldy cheese that went to clown college! (Sorry. Mike Wazowski made us tell that one.) Okay, so maybe Mike doesn’t always have the best lines in all of Monsters Inc. But you can't deny that he's got the brains for the task, the heart for the mission, and his eye on the prize. This season is all yours when you’re Mike Wazowski!

Mike Wazowski Toddler Costume

Monsters Inc. Costumes: Mike, Boo, & Sulley Costumes | HalloweenCostumes.com (6)

Do you ever feel like your tykes are always watching you? Maybe they are emulating your every action. (More likely, they are trying to spy where you are hiding all the snacks.) Either way, it can be tough to do your adulting while those kids are all eyes! Not only will a Mike Wazowski costume for kids be perfectly on point, but it might give them a reason to watch each other instead of your every move for once.

Baby Sulley Costume

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People have a natural and instinctual response to spotting a monster. It's coded into a human's DNA, we suspect. Monsters are creatures from another realm, after all. So, when you garb your little one in an infant Sulley onesie, make sure that everyone is ready to scream, “Aww!” There’s no way around it. And those photo sessions? Phew. Trust us. It’s tough to keep from cuddling a monster this cute!

Baby Mike Wazowski Costume

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Eyeballs are a natural Halloween sight. Folks are sure to have bowls of peeled grapes to give their guests the shivers. Perhaps some sugary cookies that are decorated with white frosting and bright red lines so the treats on the table look really tasty. Somehow, we suspect you can see where we’re going with this. Combine your babe with a baby’s Mike Wazowski costume and you’ll never see anything sweeter!

Monsters Inc. Costumes: Mike, Boo, & Sulley Costumes | HalloweenCostumes.com (2024)
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