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To Hell and Back by Nyame reviews
The AU where Oliver, Barry, and Kara survive Lian Yu together for years, raising a baby Kal-El, and are eventually rescued – by the League of Assassins. (Note: This version is unedited. For main, edited version, go to AO3)
Crossover - Flash & Arrow - Rated: T - English - Adventure/Friendship - Chapters: 144 - Words: 453,005 - Reviews: 437 - Favs: 747 - Follows: 664 - Updated: 20h - Published: 12/17/2017 - [Barry A./The Flash, Iris W.] [Oliver Q./Arrow/Green Arrow, Black Canary/Earth-1 D. Laurel Lance]
Flash Forwards: The Lightning-Struck TARDIS Book II by Toaofwriting
It has been a little over three years since Barry returned home after traveling through time and space with the Doctor. Unknown to him, though, his adventures are just beginning. For the Reverse-Flash has been waiting a long, long time to confront his oldest enemy, and his schemes will set all of Central City alight...unless Barry, Kara, and their friends can stop him. B
Crossover - Doctor Who & Flash - Rated: T - English - Adventure/Drama - Chapters: 1 - Words: 1,360 - Published: 12/1 - Barry A./The Flash, Eobard T./Impostor Harrison W./Reverse-Flash
The spark of love by Panabakerlopez
What if Rachel Berry pushed Barry out of the way before he got struck by lightning. What if Rachel was the one to get struck by lightning and gained powers. what if Rachel falls in love with the doctor that saved her life.
Crossover - Flash & Glee - Rated: M - English - Hurt/Comfort/Romance - Chapters: 2 - Words: 3,916 - Favs: 2 - Follows: 2 - Updated: 11/30 - Published: 10/2 - [Dr. Caitlin S., Rachel B.] Killer Frost, Terri S.
Secret Crisis: Battleworld by jason429 reviews
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: 17 - Words: 21,043 - Reviews: 5 - Favs: 7 - Follows: 5 - Updated: 11/30 - Published: 9/11
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: 45 - Words: 176,873 - Reviews: 52 - Favs: 35 - Follows: 32 - Updated: 11/29 - Published: 10/23/2021 - [P. Parker/Spider-Man, Dr. Caitlin S., Killer Frost] OC
A Web of Problems (BRANCH of F&SM) by What If Universe reviews
In the vastness of the multiverse, some worlds are similar in many ways, but many are completely different. One small decision, a millisecond decision changed everything. Peter found a woman named Natalia Rushman who had no memory of her past. The two ended up falling in love. Now years later, the two are in love and have a son. But they will learn not everything is as it seems.
Crossover - Flash & Avengers - Rated: M - English - Adventure/Mystery - Chapters: 7 - Words: 18,361 - Reviews: 5 - Favs: 21 - Follows: 21 - Updated: 11/29 - Published: 9/26 - [Spider-Man/Peter P., Black Widow/Natasha R.] Cisco R., Hawkeye/Clint B.
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: 17 - Words: 44,720 - Reviews: 21 - Favs: 24 - Follows: 21 - Updated: 11/29 - Published: 8/22 - Peter P./Spider-Man, Eobard T./Impostor Harrison W./Reverse-Flash, Savitar, Nora W.A./XS - Complete
Karry Universe by CharmedMilliE- Karry Master reviews
In an alternate universe both Barry and Kara exist together. This is what happens when they meet in college and fall in love. Follow them, their family, and friends through life from college years to being superheroes and beyond. This is Karry Universe. Leading the Millma Verse.
Crossover - Flash & Supergirl - Rated: T - English - Romance - Chapters: 190 - Words: 1,068,447 - Reviews: 3337 - Favs: 1,568 - Follows: 1,378 - Updated: 11/27 - Published: 3/4/2016 - [Barry A./The Flash, 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: 303 - Words: 370,670 - Reviews: 758 - Favs: 187 - Follows: 150 - Updated: 11/25 - Published: 3/5/2015
The Scarlet-Canary Collection by AllyBP reviews
A collection of short fics focused on Barry and Sara (because just like Elseworlds, I like to play with what ifs) All ratings
Crossover - Flash & Legends of Tomorrow - Rated: M - English - Romance/Humor - Chapters: 13 - Words: 40,720 - Reviews: 11 - Favs: 74 - Follows: 64 - Updated: 11/22 - Published: 10/27/2018 - Barry A./The Flash, Sara Lance/White Canary
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: 9 - Words: 9,732 - Favs: 8 - Follows: 8 - Updated: 11/21 - Published: 9/12 - [Oliver Q./Arrow/Green Arrow, Black Canary/Earth-1 D. Laurel Lance] Barry A./The Flash, Thea Q.
When Worlds Collide by The Batman II reviews
1st installment in the EU/Worlds Collide/Legends series. After two years on Earth 199999, Barry has adjusted to his new life as a different Flash, having to leave his team behind. However, after 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: 20 - Words: 84,001 - Reviews: 118 - Favs: 27 - Follows: 27 - Updated: 11/20 - Published: 3/11 - Barry A./The Flash, Captain America/Steve R., Iron Man/Tony S., Agent Phil Coulson
It Happened One Night by Zuiri
Sequel to It Came Upon a Midnight Clear.
Crossover - Flash & Legends of Tomorrow - Rated: M - English - Hurt/Comfort/Romance - Chapters: 1 - Words: 5,894 - Published: 11/15 - Complete
Burns Like Ice by The-White-Queen-101 reviews
Bernadette Allen watched her mother be brutally murdered, and it broke her. She watched her father get dragged away in handcuffs for the crime she knows he didn't commit, and that shattered her. Detective David Singh wants to help. He put in the request to foster the young girl until they found a suitable home for her, hopping to use the time he had to help piece herself together.
Crossover - Flash & Arrow - Rated: M - English - Adventure/Romance - Chapters: 5 - Words: 26,069 - Reviews: 5 - Favs: 25 - Follows: 34 - Updated: 11/15 - Published: 5/15/2020 - Barry A./The Flash, Capt. David S., Leonard S./Captain Cold, Oliver Q./Arrow/Green Arrow
Changing Destinies by arrow1159 reviews
After the murder of his mother, Barry Allen is adopted by Malcom Merlyn. The year is 2012, and the return of the prodigal son is upon the three families that will never be the same again, especially after that fatal accident.
Crossover - Arrow & Flash - Rated: T - English - Adventure/Romance - Chapters: 2 - Words: 7,984 - Reviews: 2 - Favs: 6 - Follows: 6 - Updated: 11/14 - Published: 11/9 - Oliver Q./Arrow/Green Arrow, Tommy M., Sara L., Barry A./The Flash
Flashpoint Mayhem by TrueHorror88 reviews
Another victory for the team, yet someone was unable to celebrate that and chose to make a world-shaking decision. Barry saved his mother from death, changing his past and his present, but it also affected others without him knowing. Seth and his family are just as affected, maybe more. The team faces newer threats, but they're not new to the Lethal Protector. They're threats.
Crossover - Flash & Venom - Rated: M - English - Adventure/Romance - Chapters: 17 - Words: 542,034 - Reviews: 89 - Favs: 105 - Follows: 113 - Updated: 11/13 - Published: 4/18/2021 - [Dr. Caitlin S., OC] Killer Frost
Bounty by CharmedMilliE- Karry Master reviews
On a world where the multiverse is well known criminals try to escape to another world to get away. Kara, Barry, and Rae (Barry's cousin) go after them to bring them back. Part of the Millma Verse
Crossover - Flash & Supergirl - Rated: T - English - Family/Adventure - Chapters: 15 - Words: 63,060 - Reviews: 83 - Favs: 24 - Follows: 18 - Updated: 11/13 - Published: 10/13/2020 - Barry A./The Flash, OC, Kara D./Supergirl
Elem 4-Speedster's Trials by LORD NAVIGATOR reviews
Father and mother killed by a man in yellow with red lightning. At seven wonders around the village and gets caught by a storm, rushing home he finds a place where a window was open. About to enter, he is hit by a lightning bolt and falls into a chemical container, but quickly comes out by swimming back up. Develops powers and gets a team to stop crime in the world.
Crossover - Flash & Naruto - Rated: T - English - Family - Chapters: 5 - Words: 9,973 - Reviews: 7 - Favs: 37 - Follows: 39 - Updated: 11/3 - Published: 6/22/2018 - Eobard T./Impostor Harrison W./Reverse-Flash, Naruto U., Samui, C
It Came Upon a Midnight Clear by Zuiri
Caitlin comes home to a surprise bleeding in her kitchen.
Crossover - Flash & Legends of Tomorrow - Rated: T - English - Hurt/Comfort/Romance - Chapters: 1 - Words: 2,048 - Published: 11/2 - Dr. Caitlin S., Mick Rory / Heat Wave - Complete
Riding the Lightning! by Elyred3516 reviews
(NOT FOR WEST-ALLEN FANS) A series of our very own Scarlet Speedster going on a sexual hazardous rampage with countless woman across the multiverse (Barry multi)
Crossover - Flash & Supergirl - Rated: M - English - Romance/Humor - Chapters: 5 - Words: 40,722 - Reviews: 23 - Favs: 31 - Follows: 29 - Updated: 11/1 - Published: 1/28 - [Barry A./The Flash, Kara D./Supergirl, Lena L.]
The Azul Speedster by killerssg reviews
Naruto ends up in a new world meeting Barry Allen and his parents. Watch how things happen with his new life.
Crossover - Flash & Naruto - Rated: M - English - Sci-Fi/Romance - Chapters: 3 - Words: 37,987 - Reviews: 34 - Favs: 121 - Follows: 130 - Updated: 10/31 - Published: 10/25 - Barry A./The Flash, Naruto U.
The Crimson Speedster by choejhulkp9 reviews
Barry Allen AKA the Flash wasn't the only one who was affected by the particle accelerator. He and Star Labs find another speedster who has similar powers to Barry, yet he's a bit different. Watch as the Scarlet Speedster joins the Crimson Speedster possibly join forces and protect Central City. Naruto x Linda x ?
Crossover - Flash & Naruto - Rated: M - English - Chapters: 13 - Words: 407,713 - Reviews: 578 - Favs: 1,641 - Follows: 1,674 - Updated: 10/30 - Published: 12/18/2015 - Linda P., Naruto U.
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: 13 - Words: 86,486 - Reviews: 6 - Favs: 9 - Follows: 9 - Updated: 10/24 - Published: 12/30/2021 - Barry A./The Flash, Cisco R., Kara D./Supergirl, Alex D.
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: 50 - Words: 210,878 - Reviews: 127 - Favs: 105 - Follows: 98 - Updated: 10/24 - Published: 1/27 - [Peter P./Spider-Man, Mary Jane W.] May P., Barry A./The Flash - Complete
Ninja of the Multiverse by Sorcerer12 reviews
After the war the Biju decided to stay with Naruto, this caused some complications one of which is immortality. After a 5-year training trip, he comes home to find things aren't how he expected them to be. Sakura realized her feelings for Naruto, they get married and she becomes immortal. Later they decide that they aren't needed anymore and decide to travel the Multiverse
Crossover - Flash & Naruto - Rated: M - English - Family/Adventure - Chapters: 8 - Words: 91,261 - Reviews: 37 - Favs: 234 - Follows: 240 - Updated: 10/16 - Published: 5/13/2021 - [Sakura H., Naruto U.] Barry A./The Flash
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