The Best Monsters, Inc. Costumes This Side of Monstropolis

Do you or your kids love Disney/Pixar's Monsters, Inc., the prequel Monsters University, and the show Monsters at Work? The original movie is a classic, originally released in 2001 and still relevant today! The popular prequel, released in 2013, brought back Sulley and Mike W. to show their origin story. The new popular show on Disney+ has brought new Monster stories to a whole new audience!

If love of these furry and funny monsters runs in your family, we have found some great costumes for you! Dress up as top scarers James P. "Sulley" Sullivan and his assistant Mike Wazowski and make them proud by doing some scaring this Halloween. No trick-or-treating is complete without a good monster costume.

1 Dynamic Monster Sulley Costume Full Mask

Found on Amazon

Are you a Sulley's biggest fan? Then you need this awesome Sulley mask that mimics your own facial movements when worn! The moving mask is designed to fit most kids but many reviewers indicate it works for adults just as well!

2 Classic Disney/Pixar Monsters University Mike Deluxe Costume

Found on Amazon

This officially licensed costume from Disney/Pixar will transform your little one into legendary scarer Mike Wazowski. The outfit is a jumpsuit with foam Mike W. overlay. This toddler costume comes with Monsters University baseball cap.

3 Adult Sulley Costume

Found on Amazon

You can be just like old Sulley here with this officially licensed jumpsuit! But don't be surprised if you're not considered scary, because we're with Boo on this one... he's big, fuzzy, and spotted with purple. As Boo would say, he's just a big "kitty."

4 Mike Wazowski Baby Jumpsuit Costume with Hat

Found on Amazon

This Mike Wazowski baby costume includes a printed foam flannel jumpsuit with character overlay, Monsters University baby cap, and matching green booties. This is great for fans of Monsters, Inc. and the exuberant Mike W!

5 Monsters University Sulley Style Adult Onesie Costume

Found on Amazon

This adult costume onesie jumper is perfect for Halloween -- or casually lounging around at home!  You can "scare" the neighborhood when you go out trick-or-treating this year with this adorable costume of James P. Sullivan. The hooded jumpsuit pajama-style costume comes with a tail on the back and doesn't include feet for maximum indoor / outdoor versatility.

6 Monsters University Mike Wazowski Costume Sunglasses Accessory

Found on Amazon

Not ready for a whole costume but still a huge fan of the famous Monsters? Then check out this adorable green Mike Wazowski sunglasses costume accessory. You will scare anyone that you will lay your EYE on! The glasses include a large Monster eye above your own shaded eyes.

7 Monsters University Sulley Costume Sunglasses Accessory

Found on Amazon

Part mask, part sunglasses, this awesome pair of Sulley Monster sunglasses is a great accessory for a complete costume, or a fun way to dress up without going too crazy.

8 Adult Mike Wazowski Costume

Found on Amazon

Even if you weren't born with the scary good looks of Mike Wazowski, you can still be pretty monstrous wearing this cool Mike Wazowski costume for adults. It's the closest you'll get to being a real live monster.

9 Monsters U Sulley Infant Costume

Found on Amazon

This infant Sulley costume includes jumpsuit, detachable tail, headpiece and pair of booties. This is an officially licensed Disney Pixar product.

10 Boo! Boo Monster Deluxe Toddler Costume

Found on Amazon

Dress up like the human child heroine of Monsters, Inc, little miss Boo! Boo wears a monster costume in the movie, looking a lot like this one! It's a fun one and great as part of a group or family costume idea.

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