Shop Spirit for Monsters Inc Costumes! Your little one can dress up as their favorite movie characters like Sulley or Mike Wazowski in these official Monsters Inc Halloween costumes! These fun Monsters Inc looks for toddlers and kids are the perfect way to celebrate Halloween. From a plush blue Sulley zip-up jumpsuit with a tail, hood and gloves, to Mike’s green coveralls complete with hood and boot covers. If you’re looking for kids Monsters Inc costumes that are sure to bring a smile to their young faces, you’ll find them right here. Your little monster will look totally adorable in these looks.