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Flash and Arrow Crossovers
761 Possibilities » by LycoX A series of one shots and ideas centered in the Arrowverse. (Requests Open Again)
T, English, Humor & Adventure, chapters: 306, words: 373k+, favs: 195, follows: 154, updated: 3/21 published: 3/5/2015
3 Speedyflash - Intro » by Flanary74 During his first visit to Starling City, Barry develops feelings for Thea (instead of Felicity)
T, English, Romance, chapters: 2, words: 984, favs: 11, follows: 13, updated: 3/10 published: 2/3, [Barry A./The Flash, Thea Q.]
CW CRISIS ON INFINITE EARTHS FANFICTION: » by JediBender12 What has been buildup since 2014 of the show now has come Flash and his Friends must prepare for a Crisis that could Change everything in the Multiverse but along the way Death itself finds its way to the infinite universes and now The League must defend Earth 38 or it too will be gone from existence.
T, English, Drama & Adventure, chapters: 4, words: 23k+, favs: 10, follows: 6, updated: 1/3 published: 1/8/2020
A Post-Crisis Christmas by Ki11er18001 During the first Christmas after Crisis on Infinite Earths, Barry and Caitlin host a small celebration at their home where they eat, drink, laugh, and also take the time to remember a dear friend who cannot be there. Apologies for the bad summary. If you are a fan of Iris or Felicity then DO NOT read as they do get insulted.
T, English, Friendship & Hurt/Comfort, words: 1k+, favs: 5, follows: 4, 12/23/2023, [Barry A./The Flash, Dr. Caitlin S.] [Roy H./Arsenal, Thea Q.]
8 From Heartbreak To A New Beginning » by changingdestiny40 Following a shocking betrayal from his wife and the resulting violent aftermath, Barry is taken in by a concerned Patty and Felicity, two of his closest friends. And they help him heal and lead him towards new and unexpected love. Volume II.IX of {MULTIVERSAL SAGA}
T, English, Hurt/Comfort & Romance, chapters: 7, words: 20k+, favs: 25, follows: 23, updated: 11/8/2023 published: 12/11/2020, [Barry A./The Flash, Patty S., Felicity S.] Oliver Q./Arrow/Green Arrow
Justice League War Games » by edmaster2 With a warning from Rip Hunter, the Justice League will have to get to the next level as more dangers start to rise: an unending nightmare spreads around the earth, Iron Heights Prison breakout, extermination machines, and much more and worse.
T, English, Adventure & Friendship, chapters: 8, words: 21k+, favs: 5, follows: 5, updated: 11/6/2023 published: 12/17/2021, Barry A./The Flash, Kendra S./Hawkgirl, Carter H./Hawkman, Oliver Q./Arrow/Green Arrow
3 An Arrowverse Halloween by Taw2541 Come to Halloween Night at S.T.A.R. Labs and witness what your favorite superheroes and their friends dress up on the spookiest night of the year.
K+, English, Humor, words: 2k+, favs: 4, follows: 2, 10/31/2023, Barry A./The Flash, Oliver Q./Arrow/Green Arrow
534 To Hell and Back » by Nyame 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)
T, English, Adventure & Friendship, chapters: 165, words: 530k+, favs: 828, follows: 735, updated: 9/15/2023 published: 12/17/2017, [Barry A./The Flash, Iris W.] [Oliver Q./Arrow/Green Arrow, Black Canary/Earth-1 D. Laurel Lance]
3 Ode To Frost » by changingdestiny40 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. Volume I.II of {MULTIVERSAL SAGA}
K+, English, Supernatural & Family, chapters: 2, words: 3k+, favs: 15, follows: 7, updated: 7/5/2023 published: 5/13/2022, Killer Frost, Oliver Q./Arrow/Green Arrow
Green Arrows Perfect Shot by William Joseph Geraghty WJG Barry Allen
K, English, Adventure, words: 5k+, follows: 1, 6/6/2023, Barry A./The Flash, Eobard T./Impostor Harrison W./Reverse-Flash, Oliver Q./Arrow/Green Arrow
The Flash: Learning to Live Again » by Star Wars guy 123 After the fallout from the betrayal of his friends in dealing with Zoom, Team Flash is fractured. Barry decides it is best to head to Starling City to be with friends he trusts, but little does Oliver or Barry know what is in store for them
T, English, Hurt/Comfort & Romance, chapters: 5, words: 7k+, favs: 19, follows: 20, updated: 5/20/2023 published: 2/12/2023, [Barry A./The Flash, Thea Q.] Eobard T./Impostor Harrison W./Reverse-Flash, Malcolm M./Dark Archer
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.*
T, English, Adventure & Friendship, chapters: 19, words: 20k+, favs: 20, follows: 17, updated: 5/11/2023 published: 9/12/2022, [Oliver Q./Arrow/Green Arrow, Black Canary/Earth-1 D. Laurel Lance] Barry A./The Flash, Thea Q.
13 Sorrow Souls » by antisocialmike 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)
T, English, Romance & Hurt/Comfort, chapters: 10, words: 40k+, favs: 26, follows: 30, updated: 4/30/2023 published: 4/1/2022, Barry A./The Flash, Thea Q.
Need and Trust by Ronnie Jane Barry may not be able to push everyone else away – But Oliver won't be one of those people.
T, English, Hurt/Comfort & Romance, words: 3k+, 4/24/2023, Barry A./The Flash, Oliver Q./Arrow/Green Arrow
Second Chances: Arrow » by Arrowversefanboy1 Part four of rewritten second chances. My name is Oliver Queen. After dying to restore the multiverse, I found myself back at the beginning of my story and now I plan to rewrite it to not only save my city but save those I lost before. A lot of things have changed in this new world but one that hasn't is me. I will always protect my home. I am the Green Arrow.
K, English, Mystery, chapters: 6, words: 6k+, favs: 4, follows: 1, 4/18/2023
6 Changing Destinies » by arrow1159 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.
T, English, Adventure & Romance, chapters: 2, words: 7k+, favs: 12, follows: 13, updated: 11/14/2022 published: 11/9/2022, Oliver Q./Arrow/Green Arrow, Tommy M., Sara L., Barry A./The Flash
Morning Routines by KitKatt0430 Oliver moves to Central City after his brief stint as Heir to the Demon. And, for once, he's trying to focus on his own happiness. And Barry's. (Post S3 Arrow/S1 Flash AU)
T, English, Romance & Hurt/Comfort, words: 5k+, favs: 16, follows: 9, 9/23/2022, [Barry A./The Flash, Oliver Q./Arrow/Green Arrow]
6 Crimson Beginnings » by antisocialmike A Fic Based On The Arrow 4x08 & The Flash 2x08 Crossover Event 'Legends of Yesterday' With Callbacks To 2x08 Of The Arrow as Well.
T, English, Romance & Drama, chapters: 2, words: 9k+, favs: 27, follows: 31, updated: 9/19/2022 published: 12/1/2021, Barry A./The Flash, Oliver Q./Arrow/Green Arrow, Thea Q., Felicity S./Overwatch
2 Soldier Taken To Task » by changingdestiny40 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. Volume II.IV of {MULTIVERSAL SAGA}
K+, English, Friendship, chapters: 2, words: 3k+, favs: 6, follows: 5, updated: 9/7/2022 published: 4/1/2021, Iris W., John D./Spartan, Felicity S./Overwatch
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.
T, English, Hurt/Comfort & Romance, words: 519, favs: 10, follows: 5, 9/3/2022, Barry A./The Flash, Oliver Q./Arrow/Green Arrow
24 The Beginning of the Age of Heroes » by ArrowverseFan833 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.)
T, English, Romance & Adventure, chapters: 32, words: 36k+, favs: 73, follows: 65, updated: 6/9/2022 published: 6/7/2021, [Oliver Q./Arrow/Green Arrow, Black Canary/Earth-1 D. Laurel Lance] Barry A./The Flash, Sara L.
1 Stuck Worlds » by hunter.guiles.9 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.
K, English, Humor & Drama, chapters: 2, words: 1k+, updated: 6/5/2022 published: 3/21/2019, Barry A./The Flash, Oliver Q./Arrow/Green Arrow
10 How Oliver and Barry Confused and Entire Police Department » by jujukittychick 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.
T, English, Humor, chapters: 3, words: 3k+, favs: 297, follows: 190, updated: 6/4/2022 published: 1/16/2019
5 Fall of Arrowverse Trash by Phillipe363 Oliver's mysteriously died in the apartment only while Felicity and Diggle investigate, they get a surprise of a lifetime. A surprise one of them tried to keep buried as this secret stretches to Barry Allen and Sara Lance. Kate Kane, Ryan and Kara as criminals? How does it involve a Time Lord to? Find out.
T, English, Adventure & Friendship, words: 1k+, favs: 5, follows: 4, 4/30/2022, [Barry A./The Flash, Patty S.] [Oliver Q./Arrow/Green Arrow, Sara L.]
12 What If Arrowverse Style » by changingdestiny40 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 doppelgängers. Volume II.XVII of {MULTIVERSAL SAGA}
T, English, Adventure & Drama, chapters: 4, words: 12k+, favs: 16, follows: 15, updated: 4/25/2022 published: 2/12/2022, Dr. Caitlin S., Cisco R., Black Canary/Earth-1 D. Laurel Lance, Nyssa al Ghul
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