At the end of the film, Mike brings Sulley (now the new CEO of Monsters, Inc.) a surprise, which turns out to be Boo's door reassembled. The door becomes functional when Sulley places the piece he has kept and he opens it to see Boo, who (although off-screen) recognizes him by happily saying, "Kitty!" This gives Sulley a surprised grin on his face as the film closes. Video Games: Monsters, Inc. • Monsters, Inc. Scream Arena • Monsters, Inc. Scream Team • Monsters, Inc. Scream Team Training • Mike's Monstrous Adventure • Disney Universe • Monsters, Inc. Run • Disney Infinity • LEGO The Incredibles • Kingdom Hearts III • Disney Emoji Blitz • Disney Heroes: Battle Mode Pooh and Pals: Pooh • Tigger • Piglet • Eeyore • Rabbit • Owl • Roo • Kanga • Gopher • Christopher Robin • Lumpy Villains: Xehanort • Ansem • Xemnas • Maleficent • Pete • Vanitas • Xigbar/Braig • Xaldin • Vexen • Lexaeus • Zexion • Saïx/Isa • Demyx • Luxord • Marluxia • Larxene • Terra-Xehanort • Young Xehanort • Xehanort's Guardian

Aladdin: Aladdin • Jasmine • The Sultan • Prince Achmed • Gazeem • Razoul • Rajah • Iago • Abu • Genie • Jafar • Magic Carpet • Pink Flamingo • Beggar Jafar • Golden Scarab Beetle • Magic Lamp • Snake Charmer • Golden Camel Tangled: Rapunzel • Flynn Rider • Stabbington Brothers • Pub Thugs • Attila • Vlad • Big Nose • Hook Hand • Ulf • Shorty • Pascal • Maximus • Mother Gothel • The King • The Queen • Captain of the Guards • Warthog • The LanternThere is also speculation that Bonnie Anderson from Toy Story 3 could be an older Boo due to having Sulley's colors and print decorating her bathroom and having a similar appearance. However, those rumors are proven false due to the fact that Boo's real name is Mary Gibbs, not Bonnie. Tangled: Rapunzel • Pascal • Flynn Rider • Maximus • Tiara Rapunzel • Mother Gothel • Wedding Maximus • Baby Rapunzel Boo and Sulley take a seemingly one last look at each other, then after Sulley closes the door, Boo runs up to it and opens it to surprise him, only to find her closet instead and Sulley nowhere to be seen. After her door is shredded, Sulley feels sad that he will probably never see Boo again and keeps one of the splintered pieces from her door as a memento. Sleeping Beauty: Aurora • Phillip • Maleficent • Flora • Fauna • Merryweather • Diablo • Samson • King Stefan • Goon • Owl • Rabbit

Peter Pan: Tinker Bell • Peter Pan • Captain Hook • Wendy • Nana • Smee • John Darling • Slightly • Holiday Tinker Bell • Topaz Tinker Bell • Captain Pan Another scene in the film had Boo say to herself, "I'm Tigger!" Tigger is a tiger character from the Winnie the Pooh franchise. The collection includes a range of clothing inspired by Monsters, Inc., available in a range of sizes online. Get cosy with a range of Monsters, Inc. T-shirts. Gifts, Toys & Accessories During the scene where Sulley and Mike hide Boo in the bathroom, one of the songs Boo sings behind the stalls is "Beauty and the Beast" from the animated Disney film of the same name.Alice Through the Looking Glass: Alice Kingsleigh • Dormouse • Tweedledee and Tweedledum • Cheshire Cat • Bandersnatch • Bayard • White Queen • March Hare • White Rabbit • Mad Hatter • Absolem • Time • Wilkins • Humpty Dumpty • Red Queen • Borogrove • Frog Delivery Man • Gentleman Fish • Vegetable Soldier • Vegetable Servant • Vegetable Executioner • Armored Chess Piece Mary Gibbs was only two-and-a-half years old when she voiced Boo. Because she was so young, it proved difficult to get her to stand in the recording studio and do her lines. Instead, they simply followed her around with a microphone while she played. Disney Animation Building • Monsters, Inc. Laugh Floor • Monsters, Inc. Mike & Sulley to the Rescue! • Monsters, Inc. Ride & Go Seek • Pixar Pal-A-Round At another point, Boo was going to be an only child and befriended Sulley (then known as Johnson) so that he could protect her.

Lilo & Stitch: Stitch • Lilo • Jumba • Scrump • Angel • Shaved Ice Stitch • Rainbow Stitch • Nani PelekaiWhen Boo tries to open her closet door after Sulley tells her goodbye and closes it, she is now 7% taller since the programmers noticed that she was too short.

When Boo tries to open her closet door after Sulley tells her goodbye and closes it, she’s now 7% taller since the programmers noticed that she was too short. Aladdin: The Genie • Aladdin • Jasmine • Jafar • Abu • Rajah • Iago • Magic Carpet • Disguised Jasmine • Snake Jafar • Vacation Genie • Prince Ali • Aquamarine Jasmine • Elephant Abu • Sultan • Baby Rajah • Red Carpet Genie • Genie Jafar • Cave of WondersCinderella: Cinderella • Jaq and Gus • Prince Charming • Fairy Godmother • Lady Tremaine • Lucifer • Suzy • Perla • Bruno Atlantis: The Lost Empire: Kida Nedakh • Vincenzo Santorini • Helga Sinclair • Milo Thatch • Audrey Ramirez In a book based on the first film, it’s revealed that Boo's real name is Mary Gibbs (the same name as her voice actress). In the film, she signs her drawings with the name "Mary".