Portal Crossovers
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Epic Rattmann by UberVenkman reviews
Reawakened by a mysterious man in a suit fifteen years after he went into hibernation, Doug Rattmann faces the biggest adventure of his life when some vaguely human soldiers reactivate a certain power-mad AI...
Crossover - Half-Life & Portal - Rated: T - English - Adventure/Drama - Chapters: 7 - Words: 13,028 - Reviews: 15 - Favs: 23 - Follows: 32 - Updated: 9/3/2014 - Published: 2/17/2014 - G-Man, Alyx V., D. Rattmann, Weighted Companion Cube
Astro VS GLaDOS by UnactiveAccountNoLongerInUse reviews
This is probably the first of its kind :D Tis is about Astro the wondrous boy robot with emotions and a mind of his own. combined that with Portal AND BOOM something REALLY GOOD or something HORRIBLE! eh, you pick witch...
Crossover - Astro Boy & Portal - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 2 - Words: 397 - Reviews: 3 - Favs: 1 - Follows: 2 - Updated: 9/1/2014 - Published: 8/29/2014
Carly's 18th Birthday by 28-characters-later
basically a headcanon I have for the portal games and the left 4 dead games. done with my two portal characters, Carly the test subject and her father Greg Harris a scientist, though i always just call him Harris
Crossover - Portal & Left 4 Dead - Rated: K - English - Chapters: 1 - Words: 548 - Follows: 1 - Published: 8/9/2014 - Complete
Thinking With Object Show Portals by Dude In The Corner reviews
Fan wakes up in a strange place.. what could this mean?
Crossover - Portal & Web Shows - Rated: K - English - Adventure/Humor - Chapters: 4 - Words: 1,746 - Reviews: 2 - Follows: 1 - Updated: 8/7/2014 - Published: 8/6/2014
Time and Portals by Bluelazor reviews
Deep in the bowels of Aperture Science Data Enrichment Center, a young woman with no memory of her life before Aperture is forced to complete GLaDOS' many tests. Her almost-predictable life is changed for the better when a strange, blue box appears in one of the test chambers.
Crossover - Doctor Who & Portal - Rated: T - English - Drama/Sci-Fi - Chapters: 15 - Words: 20,409 - Reviews: 20 - Favs: 55 - Follows: 62 - Updated: 8/6/2014 - Published: 12/28/2012 - Complete
A fall from grace Portal version by Destructo13 reviews
The beginning of a story about how Hinata is thrust out of her clan and falls into Aperture Science and is saved by GLaDOS. I suck at summaries so why won't you go and take a look and see.
Crossover - Naruto & Portal - Rated: T - English - Adventure - Chapters: 2 - Words: 1,600 - Reviews: 5 - Favs: 14 - Follows: 23 - Updated: 8/5/2014 - Published: 8/27/2013
Warners vs GLaDOS by Fanfic-Rick42 reviews
A short oneshot of the Warners meeting GLaDOS and driving her crazy, Nothing more, nothing less.
Crossover - Animaniacs & Portal - Rated: K - English - Humor - Chapters: 1 - Words: 560 - Reviews: 3 - Favs: 8 - Follows: 4 - Published: 7/12/2014 - Dot W., Yakko W., Wakko W., GLaDOS - Complete
Aperture Dragons by Shade The Aperture Dragon reviews
It's been two weeks since GLaDOS let Chell go. Now, When Chell returns, her and GLaDOS find themselves acting strange towards each other and the two are thrown into another world, the dragon realms. Now, turned into twin dragonesses of an unknown element, the two must learn to cope with their knew status, make friends, and fight off a growing evil as they fulfill their destiny.
Crossover - Spyro the Dragon & Portal - Rated: T - English - Fantasy/Adventure - Chapters: 19 - Words: 44,429 - Reviews: 7 - Favs: 18 - Follows: 13 - Updated: 7/12/2014 - Published: 4/5/2014 - Spyro, Cynder, Chell, GLaDOS - Complete
Testing Time by Hailzthewakawaka reviews
Testing time, c'mon grab your subjects. We're going to Aperture Science Lab. Wheatley the core and Finn the human, their torture will never end it's testing time!
Crossover - Portal & Adventure Time with Finn and Jake - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 6,851 - Reviews: 11 - Favs: 12 - Follows: 10 - Updated: 7/6/2014 - Published: 11/20/2012 - Wheatley, Finn
Lab Wolf by The6thAnon reviews
Rose and The Doctor find themselves in the Aperture Science Testing Facility. GLaDOS inaugurates them as test subjects, but this is no normal experiment. Something created the hole in the Portalverse's timeline, and they're going to find out what did. [Void Ship Saga] Storyworld Series, Episode 1
Crossover - Doctor Who & Portal - Rated: T - English - Sci-Fi/Suspense - Chapters: 7 - Words: 5,932 - Reviews: 4 - Favs: 7 - Follows: 9 - Updated: 6/9/2014 - Published: 4/27/2014 - 10th Doctor, Rose T., Chell, GLaDOS - Complete
P(ortal)AYDAY by PrettyKittyFics reviews
The gang is ready for another payday, and Bain says this will be the easiest one yet. It seems simple: Break into an abandoned science center to steal some technology that could be worth millions. No guards, cameras, or anything in their way…right?
Crossover - Portal & Payday: The Heist - Rated: T - English - Adventure/Humor - Chapters: 4 - Words: 13,593 - Reviews: 9 - Favs: 11 - Follows: 11 - Updated: 6/5/2014 - Published: 4/24/2014 - [Chains, Dallas, Hoxton] GLaDOS - Complete
Stuck Underground by DontOpenTheKnifeDrawer reviews
The TARDIS teleports the Doctor to a modern, American, underground facility full of robots. While on his adventure through the facility, he meets a woman named Chell. Chell and the Doctor have to stop power-mad Wheatley from tearing apart the facility. But can they stop the chaos from happening in time?
Crossover - Doctor Who & Portal - Rated: K - English - Adventure/Sci-Fi - Chapters: 5 - Words: 4,672 - Reviews: 6 - Favs: 17 - Follows: 17 - Updated: 5/27/2014 - Published: 4/6/2014 - 11th Doctor, Chell, GLaDOS, Wheatley
What Happened? by hyacinthorectus reviews
Chell found herself somewhere she did not know, with a voice narrating to her what to do. Completely pissed off, she does everything /the exact opposite/ what the Narrator says. And finds herself... in quite a hassle.
Crossover - Portal & Stanley Parable - Rated: K - English - Humor/Adventure - Chapters: 4 - Words: 3,692 - Reviews: 7 - Favs: 22 - Follows: 13 - Updated: 5/20/2014 - Published: 5/12/2014 - Chell, GLaDOS, Narrator, Stanley - Complete
my little portal science is magic the bad news by brony188 reviews
airen woke up seeing twillite "oh hello twillite.how did you get here?" "i don't d also,who are you?" "oh.ok then." after that he heard doug calling for him "doug?" "who is doug?" twillite asked "just a scientist" doug saw airen "hey" doug said "come with me near the office." "whats going on?" airen asked "well...i have bad news" doug said "what?" "umm." doug sighed
Crossover - My Little Pony & Portal - Rated: K+ - English - Sci-Fi - Chapters: 1 - Words: 3 - Reviews: 1 - Published: 5/17/2014
my little portal science is magic the error by brony188 reviews
it was a normal day in equestria laboratories working on glados was hard but was worth it.or so they ey started her up but she started ren and doctor whooves came in and saw ey decided to shut her down only for airen to get knocked out and put in a testing en the nurotoxin came,luckily doctor whooves had a hazard suit and escaped.
Crossover - My Little Pony & Portal - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 1 - Words: 3 - Reviews: 1 - Published: 5/17/2014
Guest Subjects by Pytas reviews
When the RED Team is asked to investigate an abandoned Aperture Science facility, they get roped into becoming the newest subjects. Can they escape intact?
Crossover - Portal & Team Fortress 2 - Rated: K+ - English - Humor/Adventure - Chapters: 4 - Words: 8,352 - Reviews: 13 - Favs: 16 - Follows: 23 - Updated: 5/17/2014 - Published: 10/24/2013
Prologue by nerdfighter3 reviews
this is the prologue to a story I may or may not upload. it all depends on how popular this is.
Crossover - X-overs & Portal - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 1 - Words: 270 - Reviews: 1 - Published: 5/16/2014
A Little Neurotoxin by Ekowolfe reviews
I wanted to make some science. I need three things: Test subjects, a test chamber, and a little neurotoxin. Minor character deaths.
Crossover - Portal & Ninjago - Rated: T - English - Friendship/Sci-Fi - Chapters: 1 - Words: 1,128 - Reviews: 6 - Favs: 2 - Follows: 2 - Published: 5/10/2014 - GLaDOS, Zane - Complete
Time for Cake? by Enlightened Apostle reviews
The Doctor and Amelia Pond. Best of friends who travel in time and space in the most dangerous of situations, though none that quite reach the severity of this. Paralell universes, murderous robots and sassy cores. What could go wrong?
Crossover - Doctor Who & Portal - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 1,869 - Reviews: 1 - Favs: 3 - Follows: 2 - Published: 5/6/2014 - Amelia P./Amy, 11th Doctor, Chell, GLaDOS
Steven vs Portal by FitMC reviews
It's an average day in Beach City... until Steven uncovers a strange room in the Aperture Science Testing Facility. Now Steven, Garnet, Amethyst, and Pearl will have to escape the facility, but can they escape in time? NOTE: THIS IS NOTHING LIKE THAT "Steven's Suicide" CRAP! This has more effort put into it.
Crossover - Portal & Steven Universe - Rated: K+ - English - Sci-Fi/Suspense - Chapters: 3 - Words: 1,760 - Reviews: 7 - Favs: 16 - Follows: 14 - Updated: 5/3/2014 - Published: 4/21/2014 - GLaDOS, Amethyst, Pearl, Steven U.
Thinking With Ghost Powers by invisible0one reviews
Ah, Danny. Doesn't life hate you? First Skulker gets an upgrade, and then you find yourself here, in the Aperture Science Computer-Aided Enrichment Center. Well, at least you're used to things trying to kill you. Have fun, and don't try to escape.
Crossover - Danny Phantom & Portal - Rated: T - English - Adventure - Chapters: 2 - Words: 3,067 - Reviews: 10 - Favs: 28 - Follows: 33 - Updated: 4/28/2014 - Published: 1/3/2014 - Danny F., Chell, GLaDOS
Three Laws Safe by StyxD78
What happens when you tamper with the most basic fundamentals of an AI's programming? The result may not be an improvement.
Crossover - Foundation & Portal - Rated: K - English - Sci-Fi/Suspense - Chapters: 1 - Words: 965 - Favs: 3 - Follows: 1 - Published: 4/6/2014 - D. Rattmann, Oracle Turret - Complete
The Space Queen by ConMan1226 reviews
What if, instead of hallucinating about Matt, Ryan Stone came across Wheatley and the Space Sphere? Oneshot. Probably.
Crossover - Portal & Gravity - Rated: K+ - English - Hurt/Comfort - Chapters: 1 - Words: 1,355 - Reviews: 3 - Favs: 3 - Follows: 1 - Published: 4/2/2014 - Wheatley, Space Core, R. Stone - Complete
Blue Sky, Glow Cloud by MindfulWrath reviews
"Are you trying to escape? 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. I have an infinite capacity for knowledge, and even I'm not sure what's going on outside."
Crossover - Portal & Radio Dramas - Rated: T - English - Supernatural/Humor - Chapters: 14 - Words: 32,841 - Reviews: 10 - Favs: 20 - Follows: 9 - Updated: 3/27/2014 - Published: 2/3/2014 - Complete
The Discremitination of a Perfectly Normal Human Being by Indigo Code reviews
Zim wakes up in a rather unpleasant manner to a rather unpleasant AI... (most likely a One-Shot)
Crossover - Invader Zim & Portal - Rated: K+ - English - Humor - Chapters: 1 - Words: 2,657 - Reviews: 6 - Favs: 12 - Follows: 3 - Published: 3/21/2014 - Zim, GLaDOS - Complete
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