Monsters Inc. Crossovers
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Randall and the Night Warriors by Blazefire19 reviews
Randall, who was banished rides into NYC, happening upon the famous gargoyles of Manhattan. Will he be able to fit in with these creatures of the Night?
Crossover - Monsters Inc. & Gargoyles - Rated: K+ - English - Friendship/Adventure - Chapters: 5 - Words: 6,797 - Reviews: 1 - Favs: 2 - Follows: 3 - Updated: 2/11 - Published: 11/9/2021 - Randall B., Brooklyn, Goliath
Never Forgotten by WinterLifeAmerica reviews
Story inspired by Tumblr user onemuseleft, I decided to write this since no one has wrote it yet. Summary: Lilo and Boo are college roommates and must go on an adventure to find Stitch one night when he disappears into their closet bumping into familiar Monster's Inc characters.
Crossover - Monsters Inc. & Lilo & Stitch - Rated: T - English - Family/Adventure - Chapters: 8 - Words: 7,870 - Reviews: 62 - Favs: 103 - Follows: 162 - Updated: 1/26 - Published: 7/6/2015 - Boo/Mary Gibbs, Mike W., Sulley/James P. Sullivan, Lilo P.
An Accidental Travel to the Pixar Multiverse by 12RayChienne9 reviews
A young adult finds herself in the body of André. Therefore, she must team up with Wally B. in order to deal with amnesia by visiting other worlds through doors made by monsters. I own the cover art due to the fact that I drew it. Most of the characters who appeared in this fanfic belong to Pixar, Disney and/or Lucasfilm.
Crossover - Monsters Inc. & Pixar shorts - Rated: T - English - Adventure/Humor - Chapters: 2 - Words: 11,943 - Reviews: 1 - Favs: 2 - Follows: 1 - Updated: 12/29/2021 - Published: 7/25/2021
The Tale of Monsters, Inc by Disneyanim001
It set a month since Monsters Incorporated switched from screams to giggles and three days since two monsters named Sulley and Mike reunite with a little girl named Boo. During one of their playdates with Boo, Sulley and Mike meet Peter Rabbit, Lily Bobtail, Benjamin Bouncer, Squirrel Nutkin and Old Brown the owl who live in the Lake District for the first time.
Crossover - Monsters Inc. & Peter Rabbit series - Rated: K - English - Adventure/Friendship - Chapters: 4 - Words: 10,919 - Published: 11/2/2021 - Boo/Mary Gibbs, Mike W., Sulley/James P. Sullivan - Complete
Inside Monsters, Inc by Ultra Instinct -Sign reviews
When James P. Sullivan accidentally let a human named Riley Andersen into the Monster world, he has to return her to the human world and fast. But it's going to require some help from his friend, Mike Wazowski, a green, opinionated, feisty little one-eyed monster, and his girlfriend, Celia, a receptionist of the company in order to return the girl home.
Crossover - Monsters Inc. & Inside Out - Rated: K+ - English - Adventure/Humor - Chapters: 9 - Words: 26,959 - Reviews: 8 - Favs: 21 - Follows: 16 - Updated: 10/14/2021 - Published: 9/7/2021 - [Celia M., Mike W.] Sulley/James P. Sullivan, Riley - Complete
Waddle Dee Gets Carried Away by Gose Peso
Just a normal day in art class.
Crossover - Kirby & Monsters Inc. - Rated: M - English - Humor - Chapters: 1 - Words: 605 - Favs: 1 - Published: 2/10/2021 - Waddle Dee, Mike W. - Complete
Harry Potter and the Banished Monster by PenguinBandit523 reviews
Randall Boggs escaped from the trailer of terror and has made it to the UK. He is discovered by ten year old Harry Potter who refuses to leave the monster when he clearly needs help. By the time Hogwarts starts, Harry can say with certainty that Professor Snape's snarkyness has got nothing on Randall And with said monster by his side, he definitely won't forget.
Crossover - Harry Potter & Monsters Inc. - Rated: T - English - Mystery - Chapters: 3 - Words: 10,199 - Reviews: 85 - Favs: 402 - Follows: 438 - Updated: 12/10/2020 - Published: 7/7/2013
Boo's Story by TARDISblue13times reviews
Boo was born with the name of Mary Gibbs. Her parents didn't want her, they didn't know she was a Super. When Mary meets a monster in her closet by the name of James P. Sullivan, her entire world is changed. This is Boo's story from the day she met Sully to the day she became the Witch. Based around the events of the Pixar Theory (SuperCarlinBrothers).
Crossover - Monsters Inc. & Incredibles - Rated: K+ - English - Adventure/Family - Chapters: 7 - Words: 13,112 - Reviews: 1 - Favs: 7 - Follows: 6 - Updated: 7/5/2020 - Published: 4/26/2020
Monsters University: Resurgence by ArchivistIsaac reviews
Shinni Resurgence Gojira, is an emotionally detached monster, who doesn't talk a lot. Her best friend is Mike Wazowski, and together they go to Monsters University. But... Shinni doesn't think that she's scary enough to be there. She doesn't believe in herself. But... Let's see what happens when she joins Oozma Kappa. And when her brother teaches there, and her cousin is a student.
Crossover - Godzilla & Monsters Inc. - Rated: T - English - Friendship/Adventure - Chapters: 2 - Words: 4,447 - Reviews: 1 - Favs: 7 - Follows: 7 - Updated: 12/6/2019 - Published: 11/23/2019
Monster in my closet by USA Tiger reviews
Scarer Claws Ward finds himself in the wrong room when he's assigned to scare a little boy only to find himself scared instead. Meanwhile, a certain little vampire is just confused by this weird monster.
Crossover - Monsters Inc. & Hotel Transylvania - Rated: K - English - Humor - Chapters: 1 - Words: 1,700 - Reviews: 5 - Favs: 23 - Follows: 20 - Published: 10/20/2019
Po x Mike Wazowski by PapaKench reviews
When Po goes on a mission he has a better time than he expected.
Crossover - Monsters Inc. & Kung Fu Panda - Rated: M - English - Romance/Spiritual - Chapters: 1 - Words: 315 - Reviews: 3 - Published: 9/30/2019 - Mike W., Po, Shifu - Complete
The Dalek Invasion of Monsteropolis by williammartin11
Severe AU! Set during the events of Monsters University, Mike Wazowski is leading his band of misfits to a victory in the yearly Scare Games tournament. However, greater threats are in store not just for Wazowski, but for all the peoples of Monstropolis. Soon all shall fear the coming of the Daleks. Rated M to be safe!
Crossover - Doctor Who & Monsters Inc. - Rated: M - English - Sci-Fi/Suspense - Chapters: 1 - Words: 17,313 - Favs: 1 - Published: 9/14/2019 - Complete
Turtles and the Lizard Part 3 by dondena reviews
After the defeat of the demon Shredder, the guys didn't know what they would be doing other than defending their city and the world, and would they ever find anything different? AU. Crossover.
Crossover - Ninja Turtles & Monsters Inc. - Rated: T - English - Family/Adventure - Chapters: 20 - Words: 61,505 - Reviews: 36 - Favs: 6 - Follows: 2 - Updated: 9/9/2019 - Published: 5/27/2019 - Leonardo, Donatello, Michelangelo, Randall B. - Complete
The Giant Purple 'Party Crasher' by skipperauroras
This is a weird idea I had a crossover with Trolls The Beat Goes On and Monsters Inc. Long Story short Randall finds a portal to the Trolls World and meets The Party Crashers.
Crossover - Monsters Inc. & Trolls - Rated: K+ - English - Chapters: 4 - Words: 2,996 - Updated: 8/18/2019 - Published: 7/16/2019
Getting a Handle on the Situation by blazedveggies556 reviews
When Mike finds a mysterious door, he uses it to his advantage for work, but little does he know the antics that await him on the other side.
Crossover - Monsters Inc. & Undertale - Rated: K - English - Humor/Fantasy - Chapters: 1 - Words: 6,454 - Reviews: 4 - Favs: 9 - Follows: 4 - Published: 7/31/2019 - Mike W., Papyrus, Sans - Complete
Beyond Ohana by funkypudding reviews
After leaving years before, Mary returns to her home town for college. She has a lot to hide from her new roommate, Lilo, but when Lilo's "dog" disappears into the closet one night, Mary knows she'll have to face her childhood. She and Lilo attempt to save Stitch in this other world that Mary has mixed feelings about. . .a place that gave her the nickname Boo.
Crossover - Monsters Inc. & Lilo & Stitch - Rated: K+ - English - Adventure/Drama - Chapters: 15 - Words: 12,323 - Reviews: 100 - Favs: 153 - Follows: 220 - Updated: 7/16/2019 - Published: 10/12/2015 - Boo/Mary Gibbs
Turtles and the Lizard Part 2 by dondena reviews
Continued adventures of our turtle heroes and their lizard friend. Some tales are retold from the series too, in a different way. Crossover. 2003 verse. AU.
Crossover - Ninja Turtles & Monsters Inc. - Rated: T - English - Family/Drama - Chapters: 54 - Words: 227,900 - Reviews: 69 - Favs: 13 - Follows: 6 - Updated: 5/21/2019 - Published: 10/20/2018 - Leonardo, Donatello, Michelangelo, Randall B. - Complete
MU with a Zing by Blue Kitsune reviews
Marian Dracula had 2 goals for herself: Be with her friend Mike and be a Scarer. Attending the same campus as her family at MU, she has to deal with all kinds of new things, also a monster who zing her but she doesn't want anything to do with him, what is she to do with all the drama that comes with friends, relationship and what this SCREAM QUEENS!
Crossover - Monsters Inc. & Hotel Transylvania - Rated: T - English - Romance - Chapters: 9 - Words: 98,893 - Reviews: 11 - Favs: 30 - Follows: 20 - Updated: 4/12/2019 - Published: 9/4/2018 - [Sulley/James P. Sullivan, OC] Mike W.
Operation:Penguins Inc by JennThePoMLover2005
After a secret of Skipper's has been revealed and the Penguins end up in the Monster world, they, along with Mike, Sulley and Boo, have to take down Randall when he returns once again. Will they succeed? (The four main characters are Skipper, Sulley, Mike, and Boo (hence the characters section only having these characters (characters section might look a little out of order)))
Crossover - Monsters Inc. & Penguins of Madagascar - Rated: K+ - English - Adventure - Chapters: 1 - Words: 1,354 - Favs: 1 - Follows: 2 - Published: 3/9/2019 - Boo/Mary Gibbs, Mike W., Sulley/James P. Sullivan, Skipper
A New Kind of Monster Teamup by DecaTilde reviews
What happens when closet monsters meet regular monsters? A new humorous, alien-fighting, thrill-seeking adventure, that's what. And for Link, B.O.B., Mike and Sulley, this adventure begins with making an alliance with the two monster types. ON HIATUS
Crossover - Monsters Inc. & Monsters vs. Aliens - Rated: K+ - English - Humor/Adventure - Chapters: 4 - Words: 4,721 - Reviews: 11 - Favs: 11 - Follows: 10 - Updated: 2/28/2019 - Published: 5/16/2010 - Mike W., Sulley/James P. Sullivan, B.O.B., The Missing Link
The Frogetton Door by Quazie89
In this Monsters, Inc. and Cars crossover, Mike and Sulley go to investigate rumors they have been hearing about a mysterious, frogetton door, which leads them to Radiator Springs, where they meet Lightning and Sally as Monster Trucks!
Crossover - Cars & Monsters Inc. - Rated: K - English - Adventure/Mystery - Chapters: 1 - Words: 4,817 - Favs: 3 - Follows: 4 - Published: 2/27/2019 - Lightning, Sally, Sulley/James P. Sullivan, Mike W. - Complete
Undertale Inc by MatchMaker Amethyst reviews
Sans was filing his brother's paperwork until he found Frisk's door. Sans and Papyrus must get Frisk and her toy doll; Chara back to the home. Flowey is looking for Frisk for a scary dark purpose. Sans takes a liking to Frisk and will do anything to protect her and get her home. Will Frisk and Chara get back home before Flowey finds them?
Crossover - Monsters Inc. & Undertale - Rated: T - English - Adventure/Horror - Chapters: 26 - Words: 25,797 - Reviews: 3 - Favs: 16 - Follows: 9 - Updated: 11/16/2018 - Published: 10/31/2018 - Complete
Randall vs Randall by Smart Kira
This is a poem I wrote about Randall Boggs and Randall Weems
Crossover - Recess & Monsters Inc. - Rated: K - English - Poetry - Chapters: 1 - Words: 75 - Favs: 1 - Follows: 1 - Published: 10/9/2018 - Randall W., Randall B. - Complete
How Mike Wazowski And Ickis Are The Same And Different by Smart Kira
This is a poem I wrote about Mike Wazowski and Ickis
Crossover - Monsters Inc. & Aaahh!!! Real Monsters - Rated: K - English - Poetry - Chapters: 1 - Words: 147 - Published: 10/7/2018 - Mike W. - Complete
Heroes Adventures ep 7: Monster Inc by hero101 reviews
Richard, and Bulkhead goes to the Movie: Monsters Inc. As they teamed Up with Sully, and Mike to get a Human Child back Home. Who will also be there? And is Sully a Normal Type or is there more to Him? Find out in Heroes Adventures
Crossover - Monsters Inc. & Bakugan Battle Brawlers - Rated: T - English - Humor/Adventure - Chapters: 1 - Words: 5,583 - Reviews: 1 - Favs: 4 - Follows: 2 - Published: 10/3/2018 - Mike W., Sulley/James P. Sullivan, Drago
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