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The Lightning-Struck TARDIS by Toaofwriting reviews
Studying abroad, Barry Allen was hoping for a fresh start, and got one when he met the Doctor. Join them as they travel through time and space, save planets, rescue civilizations, defeat terrible monsters, and do an awful lot of running. Seriously, there's gonna be an outrageous amount of running involved. Fusion-fic. Barry/Kara, Jack/everyone. No Flash knowledge required.
Crossover - Doctor Who & Flash - Rated: T - English - Adventure/Friendship - Chapters: 47 - Words: 121,373 - Reviews: 88 - Favs: 44 - Follows: 54 - Updated: 5h - Published: 9/30/2020 - 9th Doctor, 10th Doctor, Barry A./The Flash
New Justice- Revenge Against the League by CharmedMilliE- Karry Master reviews
Crisis is over and life is returning to normal, but there are some loose ends from previous seasons that will come back to haunt the league. Who exactly wants revenge and what for?
Crossover - Flash & Supergirl - Rated: T - English - Adventure - Chapters: 7 - Words: 39,801 - Reviews: 39 - Favs: 17 - Follows: 16 - Updated: 14h - Published: 9/19/2021 - [Kara D./Supergirl, OC] [Mon-El, Winn S.]
Crisis on Infinite Earths - White Flash by TitouLink85
While on the Vanishing Point, Sara shows the place where Snart died to Barry, and they admit their feeelings for each other. And they kissed where Sara had kissed Snart a few years earlier. What will be the differences between this new universe and the one they previously knew?
Crossover - Flash & Legends of Tomorrow - Rated: T - English - Romance/Drama - Chapters: 1 - Words: 919 - Follows: 1 - Published: 3/5 - Barry A./The Flash, Sara Lance/White Canary
Marvel's The Flash by Karry-Verse reviews
What If Peter Parker Never Existed? What If, In His Place Was Teenage Barry Allen. AkA The flash. How Would The Marvel Universe Change Due To A New Powerful Speedster In It's Midst?
Crossover - Avengers & Flash - Rated: T - English - Adventure/Hurt/Comfort - Chapters: 12 - Words: 10,708 - Reviews: 5 - Favs: 30 - Follows: 29 - Updated: 3/4 - Published: 1/1 - Captain America/Steve R., Iron Man/Tony S., Barry A./The Flash, Cisco R.
MATRIX: Another Karry Story by Karry-Verse reviews
Another What If? Idea. This one takes place in the Matrix Universe. What If Neo And Trinity aren't the only ones with unusual abilities in the matrix, and outside of it?
Crossover - Flash & Matrix - Rated: T - English - Adventure/Suspense - Chapters: 2 - Words: 1,070 - Reviews: 1 - Updated: 3/4 - Published: 2/24 - Barry A./The Flash, Neo, Trinity, OC
Scarlet Spider and Speedster (BRANCH of F&SM) by What If Universe reviews
What if instead of friends, Barry Allen and Peter Parker were brothers? But when Nora was murdered by Eobard Thawne, they were separated when Peter was only a baby. Peter was adopted by the Parker's, and Barry was adopted by Joe West when the Parker's left. As the years went on, Barry never gave up on finding Peter, but things change when he was on a trip and a spider bit him.
Crossover - Spider-Man & Flash - Rated: T - English - Parody/Drama - Chapters: 9 - Words: 17,795 - Reviews: 23 - Favs: 31 - Follows: 34 - Updated: 3/4 - Published: 1/27 - Peter P./Spider-Man, Mary Jane W., May P., Barry A./The Flash
The Hitchhiker's Guide to the Millma Verse by Captain Sigma - Karry Beta reviews
With so many worlds in the multiverse, Hitchhiking Kayla enlists Mutant Cisco to explore, finding potential friends and enemies along the way. Continuing story. Part of the Millma Verse.
Crossover - Flash & Supergirl - Rated: K - English - Adventure/Sci-Fi - Chapters: 18 - Words: 105,238 - Reviews: 84 - Favs: 25 - Follows: 18 - Updated: 3/4 - Published: 11/26/2019 - Barry A./The Flash, Cisco R., Kara D./Supergirl
Possibilities by LycoX reviews
A series of one shots and ideas centered in the Arrowverse. (Requests Open Again)
Crossover - Flash & Arrow - Rated: T - English - Humor/Adventure - Chapters: 288 - Words: 360,481 - Reviews: 743 - Favs: 176 - Follows: 144 - Updated: 3/4 - Published: 3/5/2015 - Barry A./The Flash, Oliver Q./Arrow/Green Arrow, Tommy M., John D./Spartan
The Next Generation : Book 4 of the Spiderverse by What If Universe reviews
It has been over a decade since Crisis. The Justice League on Earth-Prime have all moved on and have started to raise their families in this crazy new world. But this world is showing to have many more challenges for the next generation. New villains rising from the ashes, and there are a few secrets within these families that will change everything they thought was once true.
Crossover - Marvel & Flash - Rated: T - English - Mystery/Adventure - Chapters: 26 - Words: 108,250 - Reviews: 26 - Favs: 17 - Follows: 18 - Updated: 3/2 - Published: 10/23/2021 - [P. Parker/Spider-Man, Dr. Caitlin S., Killer Frost] OC
Flash: The Fastest Avenger Alive! by Arrowverse And MCU Fan reviews
What will happen if the DC Universe and the MCU happened in the same universe. What will happen to our favourite super hero, The Flash. What will change? What kind of adventure lies before him. Check this out! Barry / Multi
Crossover - Flash & Avengers - Rated: T - English - Romance/Adventure - Chapters: 1 - Words: 996 - Reviews: 4 - Favs: 5 - Follows: 3 - Published: 3/1 - Barry A./The Flash, Dr. Caitlin S., Black Widow/Natasha R., Wanda M./Scarlet Witch
Second Chances: Kid Flash by Lauriverfanboy1 reviews
My name is Wally West. For years I've traveled, trying to find my place in a world of heroes, trying to find peace. But after getting struck by lightning in a new world, I think I've finally found my place as I become the hero I was always meant to be. I am Kid Flash. Part 9 of Second Chances.
Crossover - Flash & Black Lightning - Rated: T - English - Chapters: 10 - Words: 9,410 - Reviews: 2 - Favs: 7 - Follows: 8 - Updated: 2/27 - Published: 1/6 - [Wally W., Linda P.] [Felicity S., Det. Eddie T.]
Flash in Avengers by Arrowverse And MCU Fan reviews
What will happen if Kara, Oliver and Barry arrived in MCU, what will happen between them and the Avengers. Could they unite as one, could they defeat the new threats that comes before them. 1st story of the "Two Worlds" series
Crossover - Flash & Avengers - Rated: T - English - Adventure/Sci-Fi - Chapters: 15 - Words: 17,019 - Reviews: 57 - Favs: 26 - Follows: 27 - Updated: 2/27 - Published: 12/19/2021 - [Barry A./The Flash, Wanda M./Scarlet Witch] Captain America/Steve R., Iron Man/Tony S.
DONDE SEA, CUANDO SEA (THE FLASH X LEGENDS OF TOMORROW WHITEFLASH) by KingMaster2526
Historia ambientada en el 3x19 de The Flash -lo que sea por una hermana- -SCARLET CANARY / WHITEFLASH- AU
Crossover - Flash & Legends of Tomorrow - Rated: T - Spanish - Hurt/Comfort/Family - Chapters: 1 - Words: 1,340 - Published: 2/26 - Barry A./The Flash, Cisco R., Sara Lance/White Canary, Ray Palmer/Atom
The Flash reunites with Jake and his crew by Laquan2022 reviews
Jake, Izzy, and Cubby return to Central City to reunite with Barry Allen, Iris west, Cisco ramon, Caitlin snow, and Joe. But this time Jake and Izzy's future daughter Carol accidentally arrives to Central city. And secretly she's working with Captain Hook in the future. But the group doesn't know that yet. But they will though soon enough.
Crossover - Flash & Jake and the Never Land Pirates - Rated: K - English - Adventure - Chapters: 1 - Words: 795 - Reviews: 3 - Updated: 2/26 - Published: 11/5/2021
Armageddon by Elyred3516 reviews
This is basically a One-Shot of what it would be like if the MCU was in Flash’s event; Armageddon
Crossover - Flash & Avengers - Rated: T - English - Humor/Sci-Fi - Chapters: 3 - Words: 6,712 - Reviews: 6 - Favs: 4 - Follows: 3 - Updated: 2/25 - Published: 1/25 - [Barry A./The Flash, Wanda M./Scarlet Witch] Eobard T./Impostor Harrison W./Reverse-Flash, Hawkeye/Clint B.
The Beginning of the Age of Heroes by ArrowverseFan833 reviews
Oliver, Barry, Kara, Laurel, Sara, and Thea are all trapped on Lian after going on the Queen's Gambit to have a celebration. See how the team becomes the heroes that the world will need them to be in the future. (The group is all from Starling City. Kara is taken in by the Queens and Barry is taken in by the Lances.)
Crossover - Flash & Arrow - Rated: T - English - Romance/Adventure - Chapters: 22 - Words: 25,059 - Reviews: 18 - Favs: 43 - Follows: 39 - Updated: 2/24 - Published: 6/7/2021 - [Oliver Q./Arrow/Green Arrow, Black Canary/Earth-1 D. Laurel Lance] Barry A./The Flash, Sara L.
Captain America and Killer Frost: Fight for Freedom by Raptor2216 reviews
The next entry in the Worlds Collide series. Caitlin and Steve find their lives getting increasingly busy with Barry and Wanda's departure and their own child coming. But when Baron Zemo reveals himself and HYDRA comes forward in force, Caitlin and Steve will find themselves in the fight of their lives as they lead Team Flash. A fight that will threaten everything they hold dear.
Crossover - Flash & Avengers - Rated: K+ - English - Romance/Sci-Fi - Chapters: 4 - Words: 6,708 - Reviews: 39 - Favs: 35 - Follows: 32 - Updated: 2/22 - Published: 9/16/2021 - [Dr. Caitlin S., Captain America/Steve R.] Cisco R., Baron Zemo
Warcraft Justice League: Spirit of Vengeance by Flash XS guy
After Varok Saurfang died in Mak'gora with Sylvannas, he did not go to the afterlife. As he was going, he is stopped by Jim Corrigan. Jim tells him that his destiny does not end here, that it's only the beginning. It's time that the Horde and the Alliance to have... Vengeance!
Crossover - Warcraft & Flash - Rated: T - English - Supernatural/Adventure - Chapters: 1 - Words: 1,300 - Published: 2/20 - Varok Saurfang, Deathwing, Barry A./The Flash, Cisco R. - Complete
What If Arrowverse Style by changingdestiny40 reviews
An Arrowverse rendition of "Marvel's What If" which explores different histories and scenarios across different Earths and involving alternate versions of its original heroes and protagonists based upon decisions made which deviate from the decisions of their Earth-1 and Earth Prime doppelgangers.
Crossover - Flash & Arrow - Rated: T - English - Adventure/Drama - Chapters: 2 - Words: 4,259 - Reviews: 8 - Favs: 6 - Follows: 6 - Updated: 2/19 - Published: 2/12 - Dr. Caitlin S., Cisco R., Black Canary/Earth-1 D. Laurel Lance, Nyssa al Ghul
Rupture between Worlds by Elyred3516 reviews
Regarding the aftermath of Flashpoint and defeating Zoom, Barry wounded back to the MCU after acidentally traveling there again. But, new problems and new faces show up leading to a war no one saw coming.
Crossover - Avengers & Flash - Rated: M - English - Adventure/Sci-Fi - Chapters: 3 - Words: 10,373 - Reviews: 11 - Favs: 10 - Follows: 11 - Updated: 2/19 - Published: 2/5 - [Wanda M./Scarlet Witch, Barry A./The Flash] Captain America/Steve R., Black Widow/Natasha R.
Missing My Doe by Ember411
To Nora West Allen, Meadow was missing. To everyone else, Meadow Danvers was dead. Nora must travel back to 2022 to save Meadow. But of course with family's help because WHY NOT?
Crossover - Flash & Supergirl - Rated: T - English - Family - Chapters: 1 - Words: 1,590 - Published: 2/19 - Barry A./The Flash, Nora W.A./XS, Kara D./Supergirl, OC
Future Foundation (BRANCH of Flash And Spider-Man) by What If Universe reviews
Time is like a river; cause enough ripples and you could change the tide. What if the Flash was never born, in turn never creating the Reverse Flash? What if one simple change altered the universe forever? Welcome to a reality that shows one simple change can alter the course of everything. Follow us, as we journey farther into the unknown, and ponder the question: "What if…?"
Crossover - Flash & Avengers - Rated: T - English - Humor/Parody - Chapters: 22 - Words: 63,104 - Reviews: 13 - Favs: 26 - Follows: 26 - Updated: 2/16 - Published: 9/3/2021 - Dr. Caitlin S., She-Hulk/Jennifer W., Invisible Woman/Susan R., Spider-Man/Peter P.
A Weekend in Central by KitKatt0430
Oliver finally takes that weekend visit to Central City. Or, more specifically, to visit Barry Allen, hot CSI. (Alternate Universe - Alt Arrow Season 2 & Alt Pre-Series Flash)
Crossover - Flash & Arrow - Rated: T - English - Romance/Drama - Chapters: 1 - Words: 3,349 - Favs: 5 - Follows: 5 - Published: 2/15 - [Barry A./The Flash, Oliver Q./Arrow/Green Arrow] Iris W., Det. Joe W. - Complete
BETTER ANGELS (KARRY SUPERFLASH) by KingMaster2526 reviews
¿alguna vez te han dicho que eres un ángel?- pregunto Barry dulcemente a lo que Kara nego juguetonamente- pues lo eres, Kara Danvers o Kara Zor-El. porque ese es tu nombre alienigena, porque eres una alienigena y creo que eso es genial- ambos rieron fuertemente mientras se perdían en la mirada del otro -y tu el mio, Barry Allen- respondió Kara con una dulce sonrisa SUPERFLASH
Crossover - Flash & Supergirl - Rated: T - Spanish - Romance/Family - Chapters: 4 - Words: 26,604 - Reviews: 3 - Favs: 3 - Follows: 3 - Updated: 2/14 - Published: 12/30/2021 - Barry A./The Flash, Cisco R., Kara D./Supergirl, Alex D.
A Brother In Need Is A Brother Indeed by Mayatauric
Oliver has always been this strong wall of a guy, with lots of barriers set up. But, when he is hit by some terrible stuff, the people who were usually with him aren't there. But, end of the day, Oliver ends up getting help either way.
Crossover - Flash & Arrow - Rated: K - English - Friendship/Hurt/Comfort - Chapters: 1 - Words: 2,936 - Favs: 1 - Published: 2/14 - Barry A./The Flash, Dr. Caitlin S., Oliver Q./Arrow/Green Arrow, Detective Lance - Complete
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