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  • Ready To Run (FLASH/ARROW/GLEE)
    161K 3.6K 12

    Flash/Glee Crossover + Arrow A Barry is Sebastian fic Barry Allen thought he had left his past, as Sebastian Smythe, behind. But, as usual, when he least expects it, his lives as the arrogant and sly Sebastian Smythe and as the kind and adorable science nerd Barry Allen collide. Ships/Pairings: Barry/Oliver (Olivarry)

    Completed  
  • Glad You Came
    19.8K 458 5

    Barry Allen is very good at singing. How? He was in a Glee Club. Oliver catches him singing and finds out.

  • He's An Iceberg || Sebastian Smythe
    94K 1.7K 17

    Sebastian Smythe. The name no one wants to hear. Sebastian is ruthless, cold hearted, and soulless. But, Sebastian is an iceberg. We only see what lies on the surface. So, what is hidden under this cold minded Warbler? And will anyone be able to save him before he melts? || I DID NOT MAKE THE COVER, IF YOU DID OR HAPP...

    Completed  
  • Uncovered truths ::glee/flash
    61.4K 855 9

    I'm not good at giving descriptions but basically the new directions, the warblers , team flash and the arrow verse watch Sebastians/Barry's past present and future P.s this is a very LGBTQ+ book so if you don't like it get out :) Also some trigger warnings like scuicidal actions and attempts as long with self harm a...

  • Legends {GleexArrowverse}
    7.4K 150 13

    ~Indefinite Hiatus~ Sebastian Smythe is invited by Rip Hunter to join him and eight others in a journey to save the timeline. Began: November 7th, 2018 Finished: ~

  • The Flash and Glee crossover
    37K 654 10

    Just another story of Barry being Sebastian in High school.

  • The Gleeful Reunion (Under Editing)
    199K 4K 30

    Barry Allen is the CSI for the CCPD. Oliver Queen is the Mayor of Star City. The both like each other but don't know how to tell the other. When Barry and Oliver go to a resturant one night while Oliver is in town, Barry was gonna confess his feelings. Oliver was gonna do the same. Right as Barry was about to, He ran...

    Completed  
  • Comatose - flash x glee
    66.8K 870 8

    Barry is Sebastian fic! While Barry Allen is comatose in the hospital, some old high school rivals visit Central City.

    Completed  
  • The Twins With Different Backgrounds
    45.8K 654 8

    This is a Glee/Flash crossover, mashup, whatever you call it. It's were Sebastian Smythe and Barry Allen are twin brothers. They're played by the actor, don't judge me. When their mom was murdered, for some reason, Joe West refused to take Sebastian and Barry together and only took Barry. As they grew up, Barry was al...

    Completed  
  • The Reunion
    104K 1.3K 20

    Barry Allen gets a letter from his old school mates for a reunion in Central City, he has skipped every other one can he skip this one? This takes place before the lighting. Why? This is Book 1 of the series. Book 2 is called Flash Who? And takes place after the lightning. Warning Olivary is in this story. Trigger War...

    Completed  
  • Who is Sebastian Smythe? (Glee and Flash FF)
    207K 5.1K 40

    Barry Allen has been bullied for years. It has gotten too far, and he decided he needed a break. A series of unfortunate events lead him to Westerville Ohio. And a new name and a new life. Will this help him heal, or will he become someone he's not. Crossposted from AO3 and FF.net in my alt account Originally Posted:...

    Completed  
  • Sebastian and Barry Allen
    1.3K 13 5

    The flash x Glee It takes place in Central City after the final episode of The Flash ( Season 6 ). Barry calls Sebastian for help not only to take down Eva and get Iris back but also for the support if his brother, Sebastian comes to Central city and meets the love of his life after over 5 years of being alone. A win...

  • Broken | Glee▪Flash
    82.8K 1.6K 14

    Sebastian Smythe and Barry Allen are twins, and neither have gotten along since before their mother's murder. When the Warbler and New Direction's reunion is set in Central City, the two get a chance to repair their relationship. Between a new murder and their mother's killer, they might just be able to.

    Completed  
  • Barry Allen? Or should I say Sebastian Smythe//Glee and Flash crossover
    31.7K 403 8

    What happens when Barry sees someone from his past at the CCPD? How will Barry react? Or should I say Sebastian?

  • Barry Or Sebastian? Or Both?
    32K 658 26

    I really hope ZanaZoola14 won't be upset at me for these because their story I AM... (BARRY AND SEBASTIAN ONESHOTS) gave me the inspiration for my version of some of their ideas, but I really encourage you to read their stories. I have one shots based off of different songs and have chapters to a short story towards t...

    Mature
  • Counterpart
    19K 355 8

    Barry Allen and Sebastian Smythe are twins.

  • Is it Smythe or Allen?
    2.8K 45 1

    Sebastian Smythe is a jerk. But what if it's all an act. And act to keep his true identity as Barry Allen aka The Flash, hidden from the public. What happens when the Warblers and New Directions accidentally over hear him talking to Cisco and Caitlin, when Caitlin gets mad and says "Barry"? What will they think of him...

  • The Flash/Glee Crossover
    142K 2.4K 14

    Bartholomew Henry Allen thought that he left his life as Sebastian Smythe back in Westerville, Ohio. But turns out, there are things that even the Flash cannot outrun. ______________________________________ *This is a crossover between The Flash and Glee. **If any of the characters seem different, that's because they...

    Completed  
  • They're A Team
    9.4K 289 7

    ~ Sequel to, "He's An Iceberg || Sebastian Smythe" ~ Only a few weeks after the changes with his life, Sebastian is invited to spend the Summer with his brother, Barry, and take along whomever he pleases. It comes to Sebastian's attention that he wasn't the only one with secrets.

  • Long Time No See -Flash x Glee
    143K 2.1K 35

    Sequel to Comatose. It's the New Directions and Warbler 7 year reunion. And it's in Central City. Bad summary. I know.

    Completed  
  • The Allen Twins (Glee and Flash FF)
    114K 2.4K 34

    Sebastian and Barry Allen are the twin sons of Henry and Nora Allen. After the Reverse Flash killed Nora Allen, they were separated. Barry went to live with the Wests while Sebastian was adopted by his godfather Alex Smythe. This is the story of what happened to the two young boys separated by the tragedy. (Crossover...

    Completed  
  • Reunions | Glee x Flash
    24.2K 358 5

    Just after the whole fake Wells incident, the Glee Clubs of Lima, Ohio had a reunion. What happens when the Clubs find out the truth behind one of their very own?

  • All Too Well {Glee/Flash}
    4.4K 82 3

    ~Indefinite Hiatus~ Began: September 7th, 2019 Finished: ~ Ϟ ʙᴀʀʀʏ ᴀɴᴅ sᴇʙᴀsᴛɪᴀɴ ᴀʀᴇ ʙʀᴏᴛʜᴇʀs ᴀᴜ Ϟ

  • Hey there Iris (FlashxGlee)
    21.6K 346 6

    It was the one day where all the new directions visit Dalton academy. That one day where they unfold one of Sebastian Smythe's (or Barry Allen's) greatest secrets. How will they deal with this information? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Barry Allen is Sebastian Smythe. I DO NOT OWN THE SONG, THE FLASH OR...

    Completed  
  • Rejoined with the Warblers
    45.7K 779 19

    Barry Allen used to be Sebastian Smythe during his time at Dalton Academy. He never told anyone but his twin sister, Bailey Allen. When the Warblers and New Direction's find Sebastian, will he be the same, snarky, teen they used to know? #1 on the flashfiction tag as of 11/10/2020

  • What Have I Become? A Flash/Glee Fanfiction
    101K 1.7K 19

    The always running Barry Allen, is going to need to get much faster in order to outrun his high school years. Taking place in season two of The Flash (with a few alterations), this crossover shows just how hard it is to keep his multiple aliases away from each other. When his old friends (and enimies!) show up, the pe...

    Completed  
  • Central City Warblers (Flash and Glee Crossover)
    8.1K 128 6

    This story is adopted from @evilgirl1234 from Wattpad. I'm going to try my best to finish what they started, so enjoy!

  • Twins (Flash/Glee)
    672 23 1

    Separated when their mother was killed, Barry Allen and Sebastian Smythe are reunited when Joe sends Barry to a private boarding school to escape bullies.