Portal Crossovers
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RWBY: Continuing Science by roboman007 reviews
After finally escaping Aperture for the last time, Chell wonders what to do for her life. Well, she has a new and improved portal gun, and Huntress sounds like a decent job.
Crossover - Portal & RWBY - Rated: T - English - Humor - Chapters: 8 - Words: 17,132 - Reviews: 27 - Favs: 46 - Follows: 75 - Updated: 9/4 - Published: 5/23 - Chell, Team RWBY
Times Change by Periwinklerene reviews
Three years after Portal 2, the Doctor finds Wheatley desperate and dying and tries to help him by taking him back to Aperture to fix him. Something goes wrong, and slowly the two find that they're at the center of something much, much bigger than themselves. (Updates on this story are available on my profile page)
Crossover - Doctor Who & Portal - Rated: T - English - Adventure/Sci-Fi - Chapters: 6 - Words: 16,117 - Reviews: 15 - Favs: 22 - Follows: 37 - Updated: 8/30 - Published: 10/10/2016 - 10th Doctor, Chell, GLaDOS, Wheatley
Zoey's Portal Adventure by BluXRE
So, from anything I would not have thought for sometime now. I had to unleash this story. Because in the pairs I put here. It is not them in love, it's the characters their going to play as. But if you don't notice is that Zoey Chell Johnson is being tested by Dottie GLaDOS, and Zoey doesn't know why everyone isn't here. Will she find out the answer? Read and find out why.
Crossover - Total Drama series & Portal - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 841 - Published: 8/2 - [Zoey, Chell] [OC, GLaDOS]
The Lost Subjects by Samthebutcher reviews
The monsters left the Underground, and with Frisk as their ambassador, they made peace with the humans, right? Wrong. The humans apprehend them and send them to a certain lab in Michigan where they are placed under hibernation for further use. They are forgotten for many years, until a bored GLaDOS wakes them up. Rated T because minor death.
Crossover - Portal & Undertale - Rated: T - English - Supernatural/Sci-Fi - Chapters: 3 - Words: 1,759 - Reviews: 3 - Favs: 2 - Follows: 4 - Updated: 7/29 - Published: 7/27
Finally Human (A Portal Fanfiction) RETURNING by Morgan64 reviews
What would happen if Wheatley and GLaDoS were finally human?
Crossover - Half-Life & Portal - Rated: T - English - Sci-Fi/Mystery - Chapters: 3 - Words: 813 - Reviews: 1 - Favs: 1 - Updated: 7/22 - Published: 12/2/2015
Half Life : A Path Divided by discet04 reviews
What if Chell had managed to fight off the party escort box after her showdown with GLaDOS. Freed from the Enrichment Center to explore the world beyond, for better or worse. "Things have changed since the last time you left the building. What's going on out there will make you wish you were back in here..."
Crossover - Half-Life & Portal - Rated: T - English - Adventure/Hurt/Comfort - Chapters: 4 - Words: 23,265 - Reviews: 6 - Favs: 11 - Follows: 16 - Updated: 7/21 - Published: 1/19 - Alyx V., Chell, D. Rattmann
The Things We Do For Science by Kineil D. Wicks reviews
Cooperative testing is supposed to bring people together through science. Cake is often a good motivator, but escaping a madhouse that tries to pass itself off as a science facility works better. Will they escape? Or will the facility keep them clutched in its iron grasp forever?...
Crossover - Portal & Don't Starve - Rated: T - English - Adventure - Chapters: 51 - Words: 46,322 - Reviews: 10 - Favs: 4 - Follows: 5 - Updated: 7/20 - Published: 5/5/2015 - Wilson H., Willow
Portalborn by Experiment 282 reviews
In the land of Skyrim, the Dragonborn is a hot-blooded thrill seeker. An encounter with a weird man and a talking meteorite ball thing that rambles about space sets her off on something weird indeed...
Crossover - Elder Scroll series & Portal - Rated: T - English - Adventure/Humor - Chapters: 66 - Words: 402,219 - Reviews: 75 - Favs: 96 - Follows: 83 - Updated: 7/15 - Published: 2/17/2012 - Dragonborn/Dovahkiin, D. Rattmann, Wheatley, Chell
Portal 2 - Chell's Afterlife by deathleader reviews
Just as Chell was leaving The center something happend... to find you look inside
Crossover - Portal & Half-Life - Rated: T - English - Chapters: 11 - Words: 16,250 - Reviews: 2 - Favs: 3 - Follows: 4 - Updated: 7/14 - Published: 1/30/2014 - Chell
Dan vs Aperture Laboratories, a Dan vsPortal Crossover by artistwithouttalent reviews
Dan seeks vengeance on the applied science company after they cheat him out of a portal device.
Crossover - Portal & Dan Vs. - Rated: T - English - Humor - Chapters: 8 - Words: 7,695 - Reviews: 19 - Favs: 14 - Follows: 16 - Updated: 7/5 - Published: 7/21/2013 - GLaDOS, Dan, Elise, Chris
Just How Can a Computer Do Magic? ! by Quatermass reviews
("Is Your Great-Aunt an AI!" sequel) GLaDOS has learned how to do magic, and is going to be teaching at Hogwarts. And it's just as well, for a plot is afoot to cause trouble at Hogwarts. Can a genius, if insane, computer and her great-nephew Harry stop things from spiralling out of control? Or will the beast of the Chamber of Secrets thwart even GLaDOS and Harry?
Crossover - Harry Potter & Portal - Rated: T - English - Humor/Fantasy - Chapters: 5 - Words: 12,929 - Reviews: 89 - Favs: 707 - Follows: 922 - Updated: 7/2 - Published: 3/13 - [Harry P., Hermione G.] Chell, GLaDOS
Insert Creative and Witty Title Here by Invisible Prince
In another world Aperture Science is run by three sisters Aversa the eldest, Robin and Grima the twins after the death of their father. Flash forward now all three sisters are married and happy running Aperture and raising their children who of course are having fun lives with the crazy products and the psychotic android,
Crossover - Fire Emblem & Portal - Rated: T - English - Family/Humor - Chapters: 1 - Words: 2,187 - Favs: 2 - Follows: 1 - Published: 5/17 - Avatar/Robin, Morgan, Chell, GLaDOS
Blue alert by TitanMoose666
Simple crossover, introduces an OC that will be in my stories to come. Sansby shipping.
Crossover - Portal & Undertale - Rated: T - English - Sci-Fi/Humor - Chapters: 5 - Words: 1,221 - Favs: 1 - Follows: 2 - Updated: 4/27 - Published: 1/19 - Chell, GLaDOS, OC, Sans
Aperture Kirby by sonicautobot
GLaDOS finds Kirby in a test chamber and decides to antagonize Chell by giving him to her. What could possibly go wrong. Written for class with a fellow student
Crossover - Kirby & Portal - Rated: K - English - Chapters: 1 - Words: 966 - Favs: 1 - Follows: 1 - Published: 4/26 - Kirby, Waddle Doo, Chell, GLaDOS
Welcome to Aperture by Throw an Inkpot
Berlyne finds herself in a unfamiliar place, unable to remember what's going on. There's only the computerized voice speaking from overhead, saying something about testing. An AU that places the TSE characters in the world of Portal. (No spoilers for The Silver Eye. Also spoiler-free for Portal right now, but that will change as the story continues.)
Crossover - Portal & Silver Eye - Rated: K - English - Sci-Fi/Suspense - Chapters: 1 - Words: 1,631 - Published: 4/15 - GLaDOS, Berlyne A
Aperture Plainsburo by Thegamerdude256 reviews
After a strange set of circumstances, Gregory House finds himself in Aperture Science. What will happen GLaDOS is activated. Can House heat all of the tests, before his sarcasm makes GLaDOS kill him herself.
Crossover - House, M.D. & Portal - Rated: T - English - Adventure/Humor - Chapters: 2 - Words: 3,979 - Reviews: 1 - Favs: 2 - Follows: 4 - Updated: 3/22 - Published: 1/9
Is Your Great-Aunt an AI? ! by Quatermass reviews
Petunia sends a baby Harry to her aunt, living in America, Caroline Evans. Some years later, Caroline becomes GLaDOS, and only Harry stops her from her rampage. Now, Harry is eleven, and he's heading to Hogwarts. Of course, with an amoral scientist/computer for a great-aunt and a mute big sister, the question is not whether he is ready for Hogwarts. Is Hogwarts ready for him?
Crossover - Harry Potter & Portal - Rated: T - English - Humor/Fantasy - Chapters: 19 - Words: 47,708 - Reviews: 341 - Favs: 1,658 - Follows: 1,486 - Updated: 3/13 - Published: 10/18/2015 - [Harry P., Hermione G.] Chell, GLaDOS - Complete
When life gives you lemons, make Star blow them up! by The Cowardly Christian reviews
What if the day Star showed up...a teen Cave Johnson showed up! Science V.S. Magic! Who will survive?
Crossover - Portal & Star Vs. The Forces of Evil - Rated: T - English - Supernatural/Sci-Fi - Chapters: 1 - Words: 312 - Reviews: 2 - Favs: 2 - Follows: 3 - Published: 2/23 - [Star B., Marco D.] Cave Johnson
Now You're Thinking with Real Science by Jaywings reviews
A former test subject, now free, takes up residence in a strange town where almost nothing is considered abnormal. A year later, a young paranormal enthusiast spots two odd new satellites orbiting the moon and immediately makes plans to bring them to Earth, firmly believing that the two metal spheres are alien in origin. Because, after all, what else could they possibly be?
Crossover - Invader Zim & Portal - Rated: T - English - Adventure/Friendship - Chapters: 22 - Words: 155,689 - Reviews: 116 - Favs: 99 - Follows: 119 - Updated: 2/22 - Published: 8/6/2013 - Dib, Zim, Wheatley, GLaDOS
Cave Johnson: The making of a hero by The Cowardly Christian
the Gravity Falls gang do a documentary; explaining how a simple 12 year old was rescued from an underground cult, came into their lives...horribly injured Mable, burnt down the town several times...and saved them all... 12-year old! Cave
Crossover - Portal & Gravity Falls - Rated: T - English - Supernatural/Sci-Fi - Chapters: 1 - Words: 469 - Favs: 2 - Follows: 1 - Published: 2/10 - [Cave Johnson, Mabel P.] [Dipper P., Wendy]
Nuclear Winter (GLaDley Fallout AU oneshot) by TheJinxedJailer
The other day my friend told me to make an apocalypse AU specifically for GLaDley. I complied, turned it into a Fallout crossover, and got in over my head. What you need to know is that Aperture is a synth colony in northern Michigan, Gladys is the leader, Wheatley is the muscle, and everybody else gets in the way.
Crossover - Fallout & Portal - Rated: K+ - English - Romance/Sci-Fi - Chapters: 1 - Words: 2,936 - Follows: 1 - Published: 2/9 - DiMA, Cave Johnson, GLaDOS, Wheatley - Complete
Folie à Aperture by Le Cookie Ninja
Premier gros projet, merci d'être indulgent et tout le reste. Bref. Cave Johnson est en fin de vie et est en pleine banqueroute mais veut toujours tester. En lisant le journal, il découvre le Joker et décide de le ramener à Aperture ainsi que ses acolytes pour pouvoir leurs faire passer des tests. Après la chute d'Aperture causée par GLaDOS, le Joker se réveille.
Crossover - Batman & Portal - Rated: T - French - Sci-Fi - Chapters: 1 - Words: 462 - Follows: 1 - Published: 1/29 - The Joker
Robots Also Fear by ghostwalker13
There's a left-behind place: no-one knows what goes on. P-Body and Atlas are sent to explore the 'ruins' of what used to be a 'restaurant/storage facility' for these 'other robots'. Whatever is down there, it isn't too happy to be seeing new faces.
Crossover - Portal & Five Nights at Freddy´s - Rated: T - English - Adventure/Horror - Chapters: 5 - Words: 2,436 - Favs: 3 - Follows: 6 - Updated: 1/23 - Published: 10/19/2016
Mann to the Core by yodapopper reviews
Wheatley does a bit of a rough landing in 2Fort, providing some much-needed change in an eternal war between brothers. But can Wheatley -and the mercenaries- adapt to the changes, or will things take a turn for the worse? No humanisations. (The TF2-verse is AU in one vital aspect: Gray Mann never happened, which means that all connected events (such as MvM) haven't occured either)
Crossover - Portal & Team Fortress 2 - Rated: T - English - Adventure/Friendship - Chapters: 15 - Words: 35,292 - Reviews: 42 - Favs: 31 - Follows: 41 - Updated: 1/18 - Published: 6/4/2014 - Wheatley, Engineer
Portal Tale by UndertalePortalFan
After Wheatley betrays Chell, GLaDOS and her must escape
Crossover - Portal & Undertale - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 1 - Words: 306 - Favs: 3 - Follows: 3 - Published: 1/16 - Chell, GLaDOS, Flowey
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