Flash Crossovers
Filters
2K | Page 1 2 3 4 11 .. Last Next »

Secret Crisis: Battleworld by jason429
Battleworld is here. After the devastating loss of our heroes and the sacrifice of Peter Parker, our heroes must reassemble and band together to remind themselves who they truly are in the Darkest of times. Heroes.
Crossover - Flash & Avengers - Rated: M - English - Sci-Fi/Fantasy - Chapters: 7 - Words: 10,784 - Favs: 4 - Follows: 4 - Updated: 50m - Published: 9/11
When Worlds Collide by The Batman II reviews
After two years on Earth 199999, home to the Avengers, Barry has adjusted to his new "life" as a darker and grittier Flash, having to leave his team for the better. However, after a series of certain events propel him to do so, Barry finds himself at the center of a series of wars and battles with S.H.I.E.L.D., the Avengers, and many other allies and enemies, both old and new.
Crossover - Flash & Avengers - Rated: M - English - Sci-Fi/Angst - Chapters: 8 - Words: 30,633 - Reviews: 54 - Favs: 18 - Follows: 18 - Updated: 17h - Published: 3/11 - Barry A./The Flash, Captain America/Steve R., Iron Man/Tony S., Agent Phil Coulson
Sorrow Souls by antisocialmike reviews
Based after the series finale of Arrow & if Thea said no to Roy's proposal & After the Flash defeats Eva. My take on some things. Can two of the most damaged people anybody could know, help each other heal & find peace within themselves as well as with the world? (Rated M Later)
Crossover - Flash & Arrow - Rated: T - English - Romance/Hurt/Comfort - Chapters: 7 - Words: 29,537 - Reviews: 7 - Favs: 9 - Follows: 13 - Updated: 9/19 - Published: 4/1 - Barry A./The Flash, Dr. Caitlin S., John D./Spartan, Thea Q.
Crimson Beginnings by antisocialmike reviews
A Fic Based On The Arrow 4x08 & The Flash 2x08 Crossover Event 'Legends of Yesterday' With Callbacks To 2x08 Of The Arrow as Well.
Crossover - Flash & Arrow - Rated: T - English - Romance/Drama - Chapters: 2 - Words: 9,223 - Reviews: 6 - Favs: 13 - Follows: 17 - Updated: 9/19 - Published: 12/1/2021 - [Barry A./The Flash, Thea Q.] Oliver Q./Arrow/Green Arrow, Felicity S./Overwatch
Earth 262 by breacher243 reviews
Formally a vigilante know as strike in Star City young Hunter Lance moves to Central City to live a normal life as a CSI when things take a unexpected turn/ DISCLAIMER: I DO NOT OWN THE FLASH OR ARROW JUST A FEW ORIGINAL CHARACTERS.
Crossover - Flash & Legends of Tomorrow - Rated: M - English - Sci-Fi/Hurt/Comfort - Chapters: 36 - Words: 75,461 - Reviews: 2 - Favs: 5 - Follows: 3 - Updated: 9/18 - Published: 1/6 - Dr. Caitlin S., Barry A./The Flash, Oliver Q./The Arrow, Sara Lance/White Canary
SuperEarth: Fate by Captain Sigma- Karry Co-Master reviews
With two fragments of the Loom of Fate discovered and safe off-world, John Constantine, Raven and Charlie/Clotho must try and find the last piece before the Sister of Fates can return to Earth. Meanwhile, Kara and Barry find unexpected adventure when they're faced with becoming parents - something Barry takes to with ease, much to Kara's amusement. Part of the Millma Verse.
Crossover - Flash & Supergirl - Rated: K+ - English - Sci-Fi/Fantasy - Chapters: 2 - Words: 10,987 - Reviews: 5 - Favs: 3 - Follows: 2 - Updated: 9/17 - Published: 9/10 - Barry A./The Flash, Ray Palmer, Kara D./Supergirl
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: 24 - Words: 24,065 - Reviews: 13 - Favs: 17 - Follows: 15 - Updated: 9/16 - Published: 1/6 - [Wally W., Linda P.] Felicity S., Jennifer P.
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: 45 - Words: 174,910 - Reviews: 111 - Favs: 87 - Follows: 84 - Updated: 9/16 - Published: 1/27 - [Peter P./Spider-Man, Mary Jane W.] May P., Barry A./The Flash
Agent S : No Way Home (BRANCH of Agent S) by What If Universe reviews
In one universe, Peter Parker-Coulson managed to stop Mysterio and was dragged into a Crisis. But in this universe, Peter's identity was revealed, sending everything into a spiral as his team was dragged down with him. Peter goes to Dr. Strange for help, thinking that he found a way to fix things. But things quickly got out of hand when they tampered with the multiverse.
Crossover - Spider-Man & Flash - Rated: T - English - Parody/Family - Chapters: 4 - Words: 9,825 - Reviews: 7 - Favs: 12 - Follows: 7 - Updated: 9/16 - Published: 8/22 - Peter P./Spider-Man, Eobard T./Impostor Harrison W./Reverse-Flash, Savitar, Nora W.A./XS
A Flash In Time by TerribleWriting101 reviews
Kagome has to do her adventure all over again, but not before she gets sent back to her time just to see flashes of red and yellow leave the shrine. Walking in to see her family dead, what now? Rating may change to M.
Crossover - Inuyasha & Flash - Rated: T - English - Friendship/Romance - Chapters: 4 - Words: 9,943 - Reviews: 3 - Favs: 15 - Follows: 20 - Updated: 9/16 - Published: 5/31/2021 - [Kagome H., Barry A./The Flash]
SHIELD's Finest Heroes by The Batman II reviews
*Full Summary Inside* When Barry Allen, a new Inhuman, is discovered by SHIELD, Coulson and the agents decide to bring him in. However, both the agents and Barry will find that their worlds will be pulled towards one another in unexpected ways as new allies and foes emerge from both sides. Can they stop the threats that come their way? Or will they fail and suffer the consequences?
Crossover - Flash & Agents of S.H.I.E.L.D. - Rated: M - English - Sci-Fi/Angst - Chapters: 5 - Words: 23,600 - Reviews: 9 - Favs: 7 - Follows: 8 - Updated: 9/16 - Published: 9/1 - Barry A./The Flash, Cisco R., P. Coulson, Skye/Daisy J.
The Fighting of Many Evils by ArrowverseFan833
The heroes have finally returned home from being shipwrecked, where they learned that they were destined to be heroes and were trained by Yeo Few, Slade Wilson, and Ra's Al Ghul. This is the sequel to "The Beginning of the Age of Heroes." *I do not own Arrow, Flash, or Supergirl. They belong to DC comics, Warner Bros., and the CW as well as their writers.*
Crossover - Flash & Arrow - Rated: T - English - Adventure/Friendship - Chapters: 1 - Words: 1,138 - Favs: 3 - Follows: 2 - Published: 9/12 - [Oliver Q./Arrow/Green Arrow, Black Canary/Earth-1 D. Laurel Lance] Barry A./The Flash, Thea Q.
The Best Souvenir by awbussiere8
After watching young justice recently (yes I know I'm really late) I think that this is what if would be like if wally was really stuck in the speedforce and if he escaped Im gonna be using the cw flash season 4 episode 1as a reference for this story Also I don't own the rights to young justice the flash or any of the characters in this story just most of the plot.
Crossover - Young Justice & Flash - Rated: M - English - Romance - Chapters: 3 - Words: 3,019 - Published: 9/12 - [Artemis C./Artemis, Wally W./Kid Flash] Barry A./The Flash
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 feelings for each other. And they kiss 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: 5 - Words: 5,524 - Favs: 4 - Follows: 5 - Updated: 9/12 - Published: 3/5 - Barry A./The Flash, Sara Lance/White Canary - Complete
Soldier Taken To Task by changingdestiny40 reviews
Sometime following the events of "Felicity vs Iris: Calling Each Other Out", Diggle is the next one to receive a firm dose of reality over his own actions but from both women. (Bonus Chapter Now Added Featuring Second Setup For Future Fic Of Mine Following First Setup Within "Firm Dose Of Reality For Kate Kane")
Crossover - Arrow & Flash - Rated: K+ - English - Friendship - Chapters: 2 - Words: 3,714 - Reviews: 2 - Favs: 5 - Follows: 3 - Updated: 9/7 - Published: 4/1/2021 - Iris W., John D./Spartan, Felicity S./Overwatch - Complete
The Other Side of Lonely by paynesgrey reviews
Fighting alone on the streets of Starling City, the Black Canary could use a little help from a friend. Enter: Cisco Ramon. Laurel Lance x Cisco Ramon. Blackvibe.
Crossover - Flash & Arrow - Rated: M - English - Romance/Crime - Chapters: 5 - Words: 8,921 - Reviews: 3 - Favs: 8 - Follows: 11 - Updated: 9/6 - Published: 7/21/2015 - [Cisco R., Black Canary/Earth-1 D. Laurel Lance] - Complete
Secret Crisis: The Kang Dynasty by jason429 reviews
The time has finally come. No more running. No more hiding. Kang The Conqueror is finally here. A Dynasty is upon the Multiverse. Heroes old and new must band together to face this new powerful threat. But will the heroes of Earth Prime finally meet their match?
Crossover - Avengers & Flash - Rated: M - English - Adventure/Sci-Fi - Chapters: 27 - Words: 37,742 - Reviews: 3 - Favs: 5 - Follows: 4 - Updated: 9/6 - Published: 8/9 - Spider-Man/Peter Parker, Barry A./The Flash - Complete
The Flash & Captain Jake Time War by Laquan2022 reviews
There back! That's right The CW show The Flash and Disney Junior's Captain Jake and the Neverland Pirates are back together for another adventure. but this time there is no Time when they will have to fast Jake's Past and travel back in time to prevent thing from happening. Can they do it in Time?" You'll just have to wait Find out.
Crossover - Jake and the Never Land Pirates & Flash - Rated: K - English - Adventure/Mystery - Chapters: 10 - Words: 14,330 - Reviews: 1 - Updated: 9/4 - Published: 10/21/2019 - Barry A./The Flash, Jake, Izzy, Cubby
Aftermath by Ronnie Jane
Set immediately after the Elseworlds Crossover. In which, Oliver learns that Barry is telling the truth about his back hurting after he shot him with arrows and does something about it.
Crossover - Flash & Arrow - Rated: T - English - Hurt/Comfort/Romance - Chapters: 1 - Words: 519 - Favs: 1 - Published: 9/3 - Barry A./The Flash, Oliver Q./Arrow/Green Arrow - Complete
Another Life Another Earth by Artemis235 reviews
Supergirl is dead. Or that's what everyone thinks. During a battle with a rogue alien, Kara gets injured and is sent into breach. Where will she end up? Will she ever be able to get home? Hope You Enjoy!
Crossover - Flash & Supergirl - Rated: K - English - Drama - Chapters: 5 - Words: 5,752 - Reviews: 2 - Favs: 3 - Follows: 2 - Updated: 9/2 - Published: 8/30 - Barry A./The Flash, Kara D./Supergirl
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: 9 - Words: 13,021 - Reviews: 58 - Favs: 46 - Follows: 39 - Updated: 9/2 - Published: 9/16/2021 - [Dr. Caitlin S., Captain America/Steve R.] Cisco R., Baron Zemo
Multiverse: Year One by The Batman II reviews
First installment in the Multiverse series. Heartbroken by everything that's happened because of Flashpoint, Barry leaves Earth One and finds a home on Earth 616, home to the Avengers. Barry will soon discover that his new home has great challenges for him. However, that won't stop Barry from fighting for what's right. Will The Scarlet Speedster be able to survive in his new home?
Crossover - Flash & Agents of S.H.I.E.L.D. - Rated: M - English - Sci-Fi/Adventure - Chapters: 27 - Words: 114,182 - Reviews: 124 - Favs: 91 - Follows: 84 - Updated: 9/1 - Published: 7/3/2021 - [Barry A./The Flash, Skye/Daisy J.] Savitar, P. Coulson - Complete
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 all 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: 43 - Words: 167,053 - Reviews: 52 - Favs: 28 - Follows: 28 - Updated: 8/31 - Published: 10/23/2021 - [P. Parker/Spider-Man, Dr. Caitlin S., Killer Frost] OC
Heroes Collide by UltraPhantom reviews
Barry, Oliver, Kara, and the rest of the heroes had just defeated the Dominator Invasion. They can finally rest...not. After the battle, the Dominators had one last trick that sent the Trinity into the MCU. They meet other heroes as they try their best to get them home. Along the way, the Trinity decided to help their world with their own threats. AMCU: 1
Crossover - Flash & Avengers - Rated: T - English - Adventure/Drama - Chapters: 4 - Words: 7,554 - Reviews: 28 - Favs: 36 - Follows: 44 - Updated: 8/31 - Published: 10/24/2021 - Barry A./The Flash, Oliver Q./The Arrow, Captain America/Steve R., Iron Man/Tony S.
The Darkness Within by Artemis235
What if Ben Lockwood succeeded in repealing the Alien Amnesty Act? With Hayley and President Baker knowing her identity, will Kara's family be safe? Takes place during S4 of Supergirl. ENJOY!
Crossover - Flash & Supergirl - Rated: K - English - Angst - Chapters: 2 - Words: 4,225 - Favs: 1 - Follows: 1 - Published: 8/30 - Barry A./The Flash, Kara D./Supergirl - Complete
2K | Page 1 2 3 4 11 .. Last Next »