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Flash, Amigo o Enemigo by
Vengador Dragon reviews
Con la llegada de los dominadores Barry recurre a sus amigos para apoyarlo, pero tras saber de Flashpoint todos desconfían de él salvo Oliver, Kara, Wally, Iris, Felicity, Joe y HR. Barry y Kara empiezan una relación en todo esto y ambos acuerdan irse a Tierra-38 cuando los venzan, Oliver va a tratar de mantener a su amigo en Tierra-1, ¿Pero podrán lograrlo con Savitar ascendiendo?
Crossover - Flash & Supergirl - Rated: T - Spanish - Sci-Fi/Adventure - Chapters: 43 - Words: 181,530 - Reviews: 22 - Favs: 37 - Follows: 40 - Updated: 8/27 - Published: 10/25/2017 - [Barry A./The Flash, Kara D./Supergirl] Oliver Q./The Arrow, Wally W.
Worlds Collide, Heroes Clash by
Raptor2216 reviews
Barry and Oliver are sucked through a portal opened by the Dominators, and are pulled into a strange world. While searching for his friend, Barry meets the Avengers, and joins them. He is happy to be on the team, but quickly realize all is not perfect, with tensions slowly building, leading to outright Civil War
Crossover - Flash & Avengers - Rated: T - English - Sci-Fi/Romance - Chapters: 44 - Words: 95,776 - Reviews: 197 - Favs: 183 - Follows: 158 - Updated: 8/22 - Published: 8/19/2018 - [Barry A./The Flash, Wanda M./Scarlet Witch] Captain America/Steve R., Iron Man/Tony S. - Complete
Worlds Apart by
Maroon Smoke reviews
A twist of fate sends our very own Barry Allen hurtling into Earth 38- where he wants to stay for the long haul. After making fast friends with Clark Kent, he's given one mission: protect Kara Danvers as she takes her mantle as Supergirl.
Crossover - Flash & Supergirl - Rated: T - English - Romance/Adventure - Chapters: 6 - Words: 51,378 - Reviews: 111 - Favs: 208 - Follows: 261 - Updated: 7/27 - Published: 8/28/2018 - [Barry A./The Flash, Kara D./Supergirl]
Spidey and Scarlet by
HandAssassinSpider-man reviews
Wanda Maximoff has had a tough life living in a country that's constantly going through some kind of crisis, her parents death because of a creation of Tony Stark and almost losing her brother under similar circumstances. While wandering through New York she happens across someone that may be the person she needs in this world... they both just have to get over the age difference.
Avengers - Rated: M - English - Romance/Adventure - Chapters: 14 - Words: 40,575 - Reviews: 455 - Favs: 1,275 - Follows: 1,449 - Updated: 4/28 - Published: 4/19/2016 - Wanda M./Scarlet Witch, Spider-Man/Peter Parker
Flip a Coin by
Thephantomprince reviews
Barry Allen and Kara Danvers felt a spark when the Flash accidentally crossed over to Earth-38, but Barry had to return to defeat Zoom, Kara had to focus on Non, and both had their own romantic interests elsewhere. But other forces are at play, and a rare opportunity might lead to something else for Supergirl, National City, and the multiverse itself. AU
Crossover - Flash & Supergirl - Rated: T - English - Friendship/Romance - Chapters: 12 - Words: 171,296 - Reviews: 137 - Favs: 267 - Follows: 347 - Updated: 1/5 - Published: 6/15/2017 - Barry A./The Flash, Kara D./Supergirl
The Beginning of the End by
Superpoweredfan7 reviews
Two worlds collide when Supergirl faces a threat she's never seen before. Confused, she finds Barry Allen in the same situation and together they rally a team in hopes of destroying the evil that has united against them. They're in the fight of their lives.
Crossover - Supergirl & Flash - Rated: T - English - Adventure/Romance - Chapters: 22 - Words: 136,981 - Reviews: 38 - Favs: 108 - Follows: 130 - Updated: 12/22/2018 - Published: 5/28/2017 - [Kara D./Supergirl, Barry A./The Flash] Alex D.
Merging of Universes by
TheK1ng reviews
The Crisis on Earth X ended very differently. Overgirl went full supernova on everyone. Barry had to do something so he did what he does best. Messing with Time.
Crossover - Flash & Supergirl - Rated: M - English - Chapters: 1 - Words: 5,398 - Reviews: 18 - Favs: 62 - Follows: 82 - Published: 10/29/2018 - Barry A./The Flash, Kara D./Supergirl
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
Crossover - Flash & Supergirl - Rated: T - English - Adventure/Romance - Chapters: 15 - Words: 57,824 - Reviews: 69 - Favs: 102 - Follows: 120 - Updated: 8/3/2018 - Published: 1/13/2018 - Barry A./The Flash, Cisco R., Kara D./Supergirl, Alex D.
Sorry to bother you but what dimension is this? by
DarthVaderHasReallyBadAsthma reviews
When Barry finds himself in another dimension after testing out a Tachyon Enhancer, he enlists the help of Supergirl to help him get home. However, when Barry and Kara fall into the same breach, they don't find themselves in Earth 1. They end up in a place with a man in a red metal suit, a man with a big metal frisbee and a woman who puts Oliver Queen to shame.
Crossover - Flash & Avengers - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 11,686 - Reviews: 45 - Favs: 128 - Follows: 164 - Updated: 2/14/2018 - Published: 1/10/2018 - Barry A./The Flash, Cisco R., Captain America/Steve R., Iron Man/Tony S.
Call me Kara by
SpeedForce 1229 reviews
Betrayed by her own world and left for dead an old friend arrives to save Kara from death. Deciding she has had enough of risking her life for others, Kara starts a brand new life with new love and new friends, leaving Supergirl behind forever.
Crossover - Flash & Supergirl - Rated: T - English - Romance/Adventure - Chapters: 62 - Words: 635,925 - Reviews: 1527 - Favs: 1,568 - Follows: 1,112 - Updated: 12/3/2016 - Published: 4/11/2016 - Barry A./The Flash, Kara D./Supergirl - Complete
Welcome to National City by
DfangOO reviews
After trying to cross over to Earth 2 Barry finds himself stuck in a world he hadn't planned on. Now Supergirl finds herself with an unexpected ally...and maybe something more.
Crossover - Flash & Supergirl - Rated: T - English - Romance - Chapters: 5 - Words: 10,668 - Reviews: 48 - Favs: 143 - Follows: 217 - Updated: 3/23/2016 - Published: 3/18/2016