World's Best Monsters Inc. Costumes This Side of Monstropolis

Do you or your kids love Disney/Pixar's Monsters Inc and Monsters University? Then we have found some great costumes for the whole family. 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. Great costumes and costume ideas here for fans of Monsters Inc.

1 Tween Sulley Costume

Found on Amazon

Are you ready for the scare floor this Halloween? We're here to help with this James P. "Sulley" Sullivan costume. Once you slip this on you'll be set to sneak up on anyone and give them a good fright!

2 Disney/Pixar Monsters University Mike Toddler Costume

Found on Amazon

This officially licensed costume from Disney/Pixar will transform your little one into legendary scarer Mike Wazowski. Costume comes with Monsters University hat.

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 Toddler Costume

Found on Amazon

This Mike Wazowski costume includes a printed foam flannel suit with candy pouch, hard hat & shoe covers. Great for fans of Mosnters Inc and anyone who wants to give people a good scare this Halloween.

5 Monsters University Mike Adult Hat

Found on Amazon – See more in Costume Hats

Not ready for a whole costume but still a huge fan of Monsters Inc? Then check out this adorable green Mike Wazowski hat. You will scare anyone that you will lay your EYE on.

6 Monsters University Sassy Sulley Womens Adult Costume

Found on Amazon

This adult women's costume is perfect for Halloween. "Scare" the neighborhood when you go out trick-or-treating this year with this adorable costume of James P. Sullivan. Comes with a pair of leg warmers to keep you warm.

7 Monsters U Sulley Infant Costume

Found on Amazon

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

8 Sulley Deluxe Hoodie Hat

Found on Amazon

Are you a Sulley's biggest fan? Then this warm and fuzzy hat with the colors of Monstropolis' most famous scarer will keep your head toasty this Halloween.

9 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.

10 Monsters University Toddler Boys Sulley Costume

Found on Amazon

We've saved the best for last. This darling blue faux fur Monsters Inc costume will provide your child hours of fun this Halloween. Beat last year's scare record with this adorable Sulley monster costume.

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