Flash and Supergirl Crossovers
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Zor-Allen One-Shots by Chevalier Lecteur reviews
This is a book of Zor-Allen one-shots.
Rated: K+ - English - Romance/Humor - Chapters: 2 - Words: 2,606 - Reviews: 5 - Favs: 19 - Follows: 21 - Updated: 9/6/2018 - Published: 8/24/2018
OverBlitzin by SuperFlashman'z reviews
What would have happened if it was Barry instead of Thawne When the Earth-Xers came? 'This is a bad summery but it's a good story'
Rated: T - English - Romance/Angst - Chapters: 3 - Words: 1,710 - Reviews: 6 - Favs: 31 - Follows: 35 - Updated: 8/31/2018 - Published: 8/19/2018 - [Barry A./The Flash, Kara D./Supergirl]
The Difference by RossZ reviews
The Thinker made a miscalculation when he wanted the portal to appear in front of the bus on the street for Barry to exit there. Instead of the portal opening in the street. It opened on the street of a different universe, and in turn Barry ended up in a different universe. Confused, Barry wanted to leave the strange place, but there was a problem. He can't leave Earth X. AU.
Rated: T - English - Adventure - Chapters: 3 - Words: 7,183 - Reviews: 57 - Favs: 112 - Follows: 134 - Updated: 8/26/2018 - Published: 12/5/2017 - Barry A./The Flash, Kara D./Supergirl
SuperFlash One-Shots by KryptonianPotato reviews
A series of fluffy one-shots about the Scarlet Speedster and the Girl of Steel. Enjoy. [chapter one was originally glitched, but I have fixed it now.]
Rated: K+ - English - Romance/Friendship - Chapters: 3 - Words: 2,521 - Reviews: 11 - Favs: 31 - Follows: 28 - Updated: 8/23/2018 - Published: 4/2/2018
Sliders 2- The Nazi World War by CharmedMilliE- Karry Master reviews
In a world of superheroes and supervillains, what would the world be like if the Nazis won WWII? Well, the New Justice League are about to find out as they're forced into a full blown Nazi World War and must recruit other worlds to help. A take on Crisis on Earth-X. Spiritual sequel to Sliders- A Millma Verse Mission.
Rated: K+ - English - Adventure/Drama - Chapters: 5 - Words: 31,020 - Reviews: 42 - Favs: 22 - Follows: 12 - Updated: 8/23/2018 - Published: 7/26/2018
Accidit by gipsypipsy reviews
When Oliver Queen entered Central High, he had some sort of idea of what it was going to be like. But, what he didn't expect were Barry Allen and Kara Danvers.
Rated: T - English - Chapters: 4 - Words: 4,870 - Reviews: 2 - Favs: 6 - Follows: 10 - Updated: 8/22/2018 - Published: 7/14/2018 - Barry A./The Flash, Oliver Q./The Arrow, Kara D./Supergirl
I Love Barry Allen by SuperFlashman'z reviews
Karas heart is on the line her doppelganger just revealed something that she has tried to keep to herself for awhile now but every time she see's him it gets harder So what happens when your invited to his wedding your doppelgangers attack then kidnap you for your heart
Rated: T - English - Romance/Drama - Chapters: 1 - Words: 519 - Reviews: 6 - Favs: 16 - Follows: 20 - Published: 8/19/2018 - [Barry A./The Flash, Kara D./Supergirl] Iris W., Felicity S.
Adventures of Justice Academy by Akiatta reviews
Set in an Alternate Universe where Kara and Barry co- exist. This is a story of a Boy and a Girl, discovering life, just as they might find something to last a lifetime. Experiencing Friendship, Love, Hate and other stuff that life has. Witness as a group of teenagers, take on a journey to become a legendary group of Superheroes. Ladies and Gentlemen, Welcome to Justice Academy!
Rated: K+ - English - Romance - Chapters: 13 - Words: 60,480 - Reviews: 80 - Favs: 68 - Follows: 72 - Updated: 8/17/2018 - Published: 1/9/2017
The Hardships We Face by Bl4ckHunter reviews
While frustrated with Iris' latest decisions, Barry and his friends decide to help Kara on Earth-38 in her war against the Worldkillers as Barry questions his path so far.
Rated: T - English - Adventure/Drama - Chapters: 18 - Words: 54,997 - Reviews: 58 - Favs: 87 - Follows: 61 - Updated: 8/14/2018 - Published: 7/3/2018 - [Barry A./The Flash, Kara D./Supergirl] Cisco R., Winn S. - Complete
Zoom by ehipos reviews
What if Kara was taken by Zoom after saving the plane? What if Barry hadn't become fast enough to cross earths yet? What if Zoom was training Kara to get faster so she could take down Barry for him and then take her speed? What if Zoom didn't know about all of Kara's powers? au
Rated: K+ - English - Chapters: 2 - Words: 671 - Reviews: 30 - Favs: 20 - Follows: 30 - Updated: 8/12/2018 - Published: 6/5/2016 - [Barry A./The Flash, Kara D./Supergirl]
Lightning runs through my veins by Starry.ael24 reviews
Kara throws a Christmas party but some things go wrong. now it is up to Mon-el to save the love of his life
Rated: K+ - English - Adventure/Angst - Chapters: 4 - Words: 4,409 - Reviews: 2 - Favs: 7 - Follows: 11 - Updated: 8/10/2018 - Published: 4/1/2018 - Barry A./The Flash, Cisco R., Kara D./Supergirl, Mon-El
Jitters by ffdude73 reviews
Barry has cold feet before his wedding to Iris so he goes to see an old friend. What revelations will this lead to and what does the future hold for our heroes. Entry for the Milmaverse Fanfiction
Rated: T - English - Romance/Angst - Chapters: 1 - Words: 2,259 - Reviews: 8 - Favs: 32 - Follows: 24 - Published: 8/10/2018 - [Barry A./The Flash, Kara D./Supergirl] Iris W.
Certain is perfect for love by Ancillary - 'JXN reviews
Doubts are harmful. Doubts turn to fear. But most of all doubts show the true colours of two people who are a match made in heaven that haven't seen the opportunity placed in front of them until Barry has finally made the decision before regrets.
Rated: K - English - Romance/Hurt/Comfort - Chapters: 1 - Words: 3,373 - Reviews: 8 - Favs: 23 - Follows: 21 - Published: 8/9/2018 - Barry A./The Flash, Kara D./Supergirl - Complete
The Space Between Two Worlds by Vowell reviews
Barry Allen, a forensic scientist for CCPD and the Fastest Man Alive. Kara Zor-El, last Daughter of House of El and Supergirl. As the Scarlet Speedster was trying to defeat his worst enemy, he accidentally makes a breach into Supergirl's universe. But was this really a mistake?
Rated: T - English - Romance/Friendship - Chapters: 2 - Words: 10,848 - Reviews: 11 - Favs: 36 - Follows: 43 - Updated: 8/7/2018 - Published: 7/14/2018 - Barry A./The Flash, Kara D./Supergirl
Shenanigans (In the Shape of Paws) by Artemis08Luna reviews
"Yeah so there's a really adorable bunny and a super hyper dog in the cortex, and I'm pretty sure those two are Kara and Barry and this cat right here is Oliver." KARIVARRY
Rated: K - English - Humor - Chapters: 1 - Words: 659 - Reviews: 1 - Favs: 54 - Follows: 21 - Published: 8/6/2018 - [Barry A./The Flash, Oliver Q./The Arrow, Kara D./Supergirl] - Complete
Karry Master's First Karry Challenge by Superflashdoggie reviews
Night before Barry Allen Wedding and issues occurred.
Rated: T - English - Chapters: 1 - Words: 311 - Reviews: 1 - Favs: 1 - Follows: 2 - Published: 8/4/2018
Worth It by FightAsOne reviews
Oliver has a nightmare, but he also has Barry and Kara to comfort him. (Not as bad as the summary makes it sound)
Rated: K+ - English - Romance/Hurt/Comfort - Chapters: 1 - Words: 975 - Reviews: 1 - Favs: 16 - Follows: 8 - Published: 8/3/2018 - Barry A./The Flash, Oliver Q./The Arrow, Kara D./Supergirl - Complete
Luck is Just Another Word for Fate by PercyPotter123 reviews
When Barry tests out his newfound speed, he gets a huge surprise in Kara Danvers/Supergirl. Watch as a lucky encounter becomes much, much more. Like World's Finest except Siobhan isn't evil yet and Alex and J'onn aren't fugitives. Everyone in the DEO knows J'onn's true identity. Karry or SuperFlash. I do not own anything of the Arrowverse. ABANDONED
Rated: T - English - Adventure/Romance - Chapters: 15 - Words: 57,824 - Reviews: 71 - Favs: 132 - Follows: 141 - Updated: 8/3/2018 - Published: 1/13/2018 - Barry A./The Flash, Cisco R., Kara D./Supergirl, Alex D.
Batwomanverse Crossover by ArrowverseWriter2018
How Batwoman should be introduced in the crossover and how the full crossover could go.
Rated: K - English - Sci-Fi/Drama - Chapters: 3 - Words: 2,835 - Favs: 4 - Follows: 3 - Published: 8/2/2018 - Barry A./The Flash, Oliver Q./The Arrow, Kara D./Supergirl, Alex D.
When Universes Collide by superorphan reviews
What if Barry Allen comes out of the Speed Force on Earth-38? This is a Supergirl season 3 re-write with Barry on it.
Rated: T - English - Romance/Adventure - Chapters: 4 - Words: 9,058 - Reviews: 25 - Favs: 65 - Follows: 88 - Updated: 7/29/2018 - Published: 1/12/2018 - Barry A./The Flash, Kara D./Supergirl, Alex D., J'onn J./Martian Manhunter
That Kind of Love by Artemis08Luna reviews
Barry enlists Winn's help with something. Kara assumes the worst and Alex has a cold gun. (Karry story written for the KryptonianPotato) ESTABLISHED KARRY
Rated: K+ - English - Romance/Humor - Chapters: 1 - Words: 2,559 - Reviews: 2 - Favs: 31 - Follows: 13 - Published: 7/24/2018 - [Barry A./The Flash, Kara D./Supergirl] Alex D., Winn S. - Complete
don't deserve it by Artemis08Luna reviews
(IMAGINE YOUR OT3) Person A: "hey can you hand me a saucepan" Person B: "no but here's a saucy pan" Person B: *hands them Person C* Person A: "… Goddammit how long have you two been planning that" ESTABLISHED KARIVARRY
Rated: K - English - Humor/Romance - Chapters: 1 - Words: 248 - Reviews: 2 - Favs: 32 - Follows: 12 - Published: 7/23/2018 - [Barry A./The Flash, Oliver Q./The Arrow, Kara D./Supergirl] - Complete
Worlds finest trio by KryptonianPotato reviews
Who knew an alien invasion could bring people together? Certainly not any of our heroes. But when the earths mightiest heroes come together to defeat the dominators, what happens to the earths finest trio, will change their lives, forever. (Karivarry) writen for Artemis08Luna's birthday.
Rated: K+ - English - Romance/Sci-Fi - Chapters: 1 - Words: 789 - Reviews: 3 - Favs: 7 - Follows: 10 - Published: 7/22/2018
I wanna ask why (but I'm still stuck on the how) by Artemis08Luna reviews
Barry, Kara and Oliver all switch bodies. That's it really.
Rated: K+ - English - Humor/Romance - Chapters: 4 - Words: 4,281 - Reviews: 6 - Favs: 64 - Follows: 44 - Updated: 7/21/2018 - Published: 1/1/2018 - [Barry A./The Flash, Oliver Q./The Arrow, Kara D./Supergirl] - Complete
Once Upon A Dream by Artemis08Luna reviews
Music Meister just wouldn't give up, would he? This time, he's put Kara, Oliver and Barry through another one of his dreamscapes only this time? They have to go through MULTIPLE plots. OR: my excuse to put Barry, Kara and Oliver in Disney movies. Chapter 2: BEAUTY AND THE BEAST; Chapter 3: HERCULES
Rated: T - English - Humor/Adventure - Chapters: 3 - Words: 30,764 - Reviews: 10 - Favs: 32 - Follows: 38 - Updated: 7/20/2018 - Published: 1/14/2018 - [Barry A./The Flash, Oliver Q./The Arrow, Kara D./Supergirl]
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