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Alternate Events 4: Multiversal Clashes by Cer1992 reviews
The fourth installment of the "Alternate Events" series that begins one month after the heroes of the various universes defeated the enemy forces from Earth-X and Earth-64. It's only a matter of time before a new threat arises and not only brings everyone together once again, but leads to chaotic clashes across the Multiverse.
Crossover - Flash & Smallville - Rated: T - English - Adventure/Sci-Fi - Chapters: 12 - Words: 69,771 - Reviews: 78 - Favs: 21 - Follows: 22 - Updated: 6/17 - Published: 9/29/2021 - Barry A./The Flash, Clark K./Superman, Lex L., Conner K./Superboy - Complete
United we stand, divided we fall by Bl4ckHunter reviews
An attempt of Tony Stark and Bruce Banner at creating a peacekeeping program Ultron backfires, so the Avengers, Oliver Queen and Barry Allen have to stand together against Ultron, despite the struggles that threaten to divide the entire group as they also face new enemies and find new allies.
Crossover - Flash & Avengers - Rated: T - English - Adventure - Chapters: 9 - Words: 28,192 - Reviews: 42 - Favs: 13 - Follows: 9 - Updated: 6/11 - Published: 6/5 - Complete
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: 32 - Words: 36,183 - Reviews: 24 - Favs: 57 - Follows: 49 - Updated: 6/9 - Published: 6/7/2021 - [Oliver Q./Arrow/Green Arrow, Black Canary/Earth-1 D. Laurel Lance] Barry A./The Flash, Sara L. - Complete
What's Up, My Meta? by LycoX
In which Freeland, and later Central, takes one man's negativity and turns it into a positive much to his dismay. (Part of the 'Hijinks' series)
Crossover - Flash & Black Lightning - Rated: T - English - Chapters: 1 - Words: 511 - Favs: 2 - Follows: 1 - Published: 6/7 - Complete
Stuck Worlds by hunter.guiles.9 reviews
So I liked the hero swap. I thought about what happened if this was the price Oliver had to pay. Forcing them back to being each other's heroes. (Any help to create this new world would be awesome , I explained in the fanfic) Basically the world of cannon CW in the second reality jump in Elseworlds.
Crossover - Flash & Arrow - Rated: K - English - Humor/Drama - Chapters: 2 - Words: 1,053 - Reviews: 1 - Updated: 6/5 - Published: 3/21/2019 - Barry A./The Flash, Oliver Q./Arrow/Green Arrow
Special Delivery: Take Two! by LycoX
In which Jay makes a delivery to Freeland and sticks around afterwards during the events of 4x05.
Crossover - Flash & Black Lightning - Rated: T - English - Family/Friendship - Chapters: 1 - Words: 730 - Favs: 2 - Follows: 2 - Published: 6/4 - Jay G./The Flash, Jefferson P., Anissa P., P. Gambit - Complete
How Oliver and Barry Confused and Entire Police Department by jujukittychick reviews
Oliver makes a visit to Central officially to pay a visit to the CCPD with the intention of making a financial contribution to improve their resources. Unofficially though? He just wants to see his favorite little speedster.
Crossover - Flash & Arrow - Rated: T - English - Humor - Chapters: 3 - Words: 3,364 - Reviews: 9 - Favs: 241 - Follows: 160 - Updated: 6/4 - Published: 1/16/2019
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. Cover made by Karry-Verse.
Crossover - Flash & Avengers - Rated: T - English - Adventure/Sci-Fi - Chapters: 19 - Words: 22,112 - Reviews: 70 - Favs: 43 - Follows: 46 - Updated: 6/2 - Published: 12/19/2021 - [Barry A./The Flash, Wanda M./Scarlet Witch] Captain America/Steve R., Iron Man/Tony S.
Godspeed No More: Take Two! by LycoX reviews
In which Godspeed gets taken out in an entirely different way during the events of 7x18.
Crossover - Flash & Supergirl - Rated: T - English - Drama/Sci-Fi - Chapters: 1 - Words: 915 - Reviews: 2 - Favs: 4 - Follows: 3 - Published: 5/30 - Barry A./The Flash, J'onn J./Martian Manhunter - Complete
The Bad Guys: Good to be Bad by Flash XS guy reviews
What if instead of saving an old lady, Mr. Wolf meets a baby that makes him want to go good. Never have there been 5 friends as infamous as The Bad Guys: Mr. Wolf, Mr. Snake, Mrs. Tarantula, Mr. Shark, and Mr. Piranha. When they get caught, they make a deal to be good to avoid prison, but can they be good for the baby?
Crossover - Bad Guys & Flash - Rated: T - English - Crime/Friendship - Chapters: 26 - Words: 57,583 - Reviews: 2 - Favs: 7 - Follows: 1 - Updated: 5/25 - Published: 5/24 - Mr. Wolf, Mr. Snake, Mr. Piranha, Mr. Shark - Complete
Captain Jake loses the mighty Battle by Laquan2022 reviews
this is a continuation of season 3 of Captain Jake and the Neverland pirates The Never Sea Conquest With a twist! that's right and the twist is that the Flash is in it, also his friends. Like Cisco Ramon Caitlin snow Iris West, and Joe West.
Crossover - Jake and the Never Land Pirates & Flash - Rated: K - English - Adventure - Chapters: 10 - Words: 3,816 - Reviews: 9 - Updated: 5/24 - Published: 6/11/2019 - Barry A./The Flash, Iris W., Jake, Izzy - Complete
New Justice- Memories of the League by CharmedMilliE- Karry Master reviews
When a magical villain escapes Alcatraz, Rae starts to have mysterious flashbacks and fears. When a 5th dimensional imp comes to help Nora Darkh and Kara have to go into Rae's mind.
Crossover - Flash & Supergirl - Rated: T - English - Chapters: 1 - Words: 10,991 - Reviews: 2 - Favs: 3 - Published: 5/23 - [Kara D./Supergirl, OC] Clark K./Superman - Complete
Water and Lightning by Ethere Mystique
Recently in Central City, a particle accelerator exploded, unleashing a wave of dark matter and unlocking powers in certain people. The Flash races to contain the new criminals cropping up. For years I've been living in the city, hiding my powers and my true self from my friends. But how can I continue to hide when I've got the power to do something, to help?
Crossover - Flash & H2O: Just Add Water - Rated: T - English - Adventure/Drama - Chapters: 2 - Words: 2,987 - Favs: 1 - Updated: 5/22 - Published: 5/8 - Barry A./The Flash, Eobard T./Impostor Harrison W./Reverse-Flash, OC
The Bad Guys: JL Museum Heist by Flash XS guy
This takes place before Snake's birthday. A few years after the Bad Guys got their powers from the Particle Accelerator Explosion while robbing a bank, Wolf decides to rob the JL's museum to steal some of its priceless artifacts. Wolf believes doing this will show that they're the greatest criminals in the world, but Snake and the others are having doubts on pulling this off.
Crossover - Bad Guys & Flash - Rated: T - English - Crime/Friendship - Chapters: 6 - Words: 14,042 - Favs: 3 - Follows: 1 - Published: 5/22 - Mr. Wolf, Mr. Snake, Mr. Piranha, Barry A./The Flash - Complete
Justice League Rumble: Feel the burn! The Rayburn! by Flash XS guy
This is how Rayburn Jr. joined the Justice League. Cisco, Chester, Ralph, and Mick scored some tickets to go to Stoker City to watch the Monster Wrestling match. They invited their friends to go to see the sport event. But while they're in the city, strange things start to happen to the monsters there.
Crossover - Wrestling & Flash - Rated: T - English - Friendship/Adventure - Chapters: 8 - Words: 13,488 - Published: 5/22 - Barry A./The Flash, Bart W.A./Impulse, Killer Frost - Complete
Tally Me Banana by LycoX reviews
In which quite a few people find out Wally's more of a freak than Mick Rory ever could be.
Crossover - Flash & Legends of Tomorrow - Rated: T - English - Humor - Chapters: 1 - Words: 791 - Reviews: 3 - Favs: 3 - Follows: 2 - Published: 5/19 - Wally W., Jesse Q., Mick Rory / Heat Wave, Zari T. - 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: 7 - Words: 83,626 - Reviews: 32 - Favs: 204 - Follows: 205 - Updated: 5/18 - Published: 5/13/2021 - [Sakura H., Naruto U.] Barry A./The Flash
That One Time by LycoX reviews
When a huge amount of Alcohol and Curiosity mixed together and made for a result Caitlin wishes she hadn't found out about.
Crossover - Flash & Legends of Tomorrow - Rated: T - English - Humor - Chapters: 1 - Words: 612 - Reviews: 2 - Favs: 3 - Follows: 2 - Published: 5/17 - Dr. Caitlin S., Killer Frost, Mick Rory / Heat Wave - Complete
UNITED - BOOK 1 OF THE MULTIVERSE SERIES by Randrog
This is the first book in the series of DEPTHS OF MULTIVERSE. It is a crossover between ARROWVERSE and MCU. This story contains teams like AVENGERS, GUARDIANS OF THE GALAXY, X-MEN, FANTASTIC FOUR, JUSTICE LEAGUE, WATCHMEN, TITANS, YOUNG JUSTICE, AVENGERS: HEROES OF TOMORROW. Rated "M" just in case. Pairing (Barry allen x Kara Danvers) & (Barry allen x Caitlin Snow).
Crossover - Flash & Avengers - Rated: M - English - Sci-Fi/Drama - Chapters: 2 - Words: 3,577 - Favs: 5 - Follows: 6 - Published: 5/14 - Barry A./The Flash, Savitar, Captain America/Steve R., Iron Man/Tony S.
Ode To Frost by changingdestiny40 reviews
Following her tragic yet heroic sacrifice, Frost finds herself in the Afterlife upon which she finds her welcoming committee consisting of both a truly legendary hero and another person dear to her and who has patiently awaited their reunion.
Crossover - Flash & Arrow - Rated: K+ - English - Supernatural/Family - Chapters: 1 - Words: 1,820 - Reviews: 1 - Favs: 11 - Follows: 5 - Published: 5/13 - Killer Frost, Oliver Q./Arrow/Green Arrow - Complete
I Want Your Bite by RisingQueen2
Barry Doesn't Believe That Denying His Orgasm Will Make His Blood Taste Better, Vampire Oliver Disagrees. Kinky Things Happen Bingo Square - Orgasm Denial. ONESHOT. COMPLETE
Crossover - Flash & Arrow - Rated: M - English - Romance/Supernatural - Chapters: 1 - Words: 742 - Favs: 14 - Follows: 10 - Published: 5/11 - Barry A./The Flash, Oliver Q./Arrow/Green Arrow - Complete
The Scarlet Spider by ParkerCooper reviews
This is me rewriting my previous Spider-Man story as I felt like the last one could've been better and I'm want to work on the flaws. This takes place in between the end of season 1 of The Flash. Peter Parker had just gained his powers and he lives in Central City. I hope you enjoy!
Crossover - Spider-Man & Flash - Rated: K+ - English - Drama/Parody - Chapters: 2 - Words: 5,123 - Reviews: 4 - Favs: 6 - Follows: 10 - Updated: 5/4 - Published: 4/20 - Peter P./Spider-Man, May P., Barry A./The Flash, Det. Joe W.
from Jinchuriki to Speedster by Dre17 reviews
this is taken from a03 don't have Permission at the moment to upload this story and don't really careally care but if the author wants me to take this down I will not for any just for me to read sorry for any inconvenience for u
Crossover - Naruto & Flash - Rated: M - English - Chapters: 1 - Words: 5,451 - Reviews: 7 - Favs: 15 - Follows: 13 - Published: 5/2
Fixing Flashpoint by Aragorn II Elessar reviews
The Doctor and River Song arrive in the Flashpoint timeline to do some fixing. One shot.
Crossover - Doctor Who & Flash - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 1,781 - Reviews: 9 - Favs: 22 - Follows: 10 - Published: 5/2 - [11th Doctor, River Song/Melody P. III] Barry A./The Flash, Eobard T./Impostor Harrison W./Reverse-Flash - Complete
Slayers and vigilantes by Bl4ckHunter reviews
One-shot story. Oliver and Faith and Barry and Buffy go out to spend some time together as they begin growing closer.
Crossover - Buffy: The Vampire Slayer & Flash - Rated: T - English - Romance/Friendship - Chapters: 1 - Words: 1,277 - Reviews: 4 - Favs: 5 - Follows: 2 - Published: 5/1 - [Buffy S., Barry A./The Flash] [Faith L., Oliver Q./The Arrow] - Complete
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