Hidden Mickeys: Inside Joke Has Become a ‘Guest Quest’ at Walt Disney World Resort – As millions of guests scurry throughout Walt Disney World Resort to see Mickey Mouse, little do they realize they may be passing him right by. And though the Mickeys they miss are not the life-sized, two-legged and three-fingered variety, they are "Hidden Mickeys" -- silhouettes and abstract images of Mickey Mouse cleverly hidden by Disney Imagineers across the 47-square-mile Vacation Kingdom.