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Fanfic / The Future Flash

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"My name is Bart Allen, and I am the fastest man alive. When my parents disappeared after a battle with the forces of Darkseid on my tenth birthday, I took up their quest for peace. To the outside world, I'm an ordinary high school student, but with the help of the rest of the Justice League, I carry on my parents' legacy. I am The Future Flash."
Bart Allen's narration before the first chapter.

The Future Flash is an Arrowverse fanfiction written by Dragonis Prime released on both and Archive of Our Own It features Bart Allen, the son of Barry Allen and Kara Danvers, travelling back in time to avert multiple crisis that will occur in the future.


WARNING: Only Spoilers for the latest chapter are marked.

The Future Flash contains examples of:

    open/close all folders 

    Non-Exclusive Tropes 

  • Action Dad: Barry is slowly settling into this role after he met Bart.
  • Action Mom: Just like Barry, Kara is showing that she is becoming this trope.
  • All Your Base Are Belong to Us: The Justice League Arc features an attack by the Daxamite army on National City.
  • Alternate Universe: This story takes place in an alternate timeline set after the The Flash (2014)/Supergirl (2015) crossover "Duet".
  • And Mission Control Rejoiced: The techies in the STAR Labs Cortex after Savitar shows up to help Barry guide Earth-1 into place for the merger into Earth Prime.
  • Arc Villain: There's a few.
    • Rhea serves as this during the Justice League Arc.
    • Cicada serves as one in the Archive of Our Own exclusive Cicada arc.
  • Big Bad: The evil hanging above the story is the impending attacks by Darkseid in 2024 and 2028, with the second one being where Barry and Kara vanished. He finally shows up in Justice League Part 4, where he kills Arc Villain Rhea.
  • Big Entrance: Bart has one when he he first introduces himself to some of the past characters. He takes down six metahumans that three other speedsters couldn't.
  • Curb-Stomp Battle: Yeah, there's a bunch.
    • Doomsday versus the Justice League. The beast kills White Canary, Citizen Steel, Speedy, Ragman, Batman, and Martian Manhunter within moments of showing up on the battlefield.
    • Bart also has quite a few of these.
      • He kills or neutralizes six versions of King Shark in rapid succession.
      • With Savitar, he runs over and punches his mask, breaking a piece of his armour off.
      • With The Black Flash, he punches it in the face, grabs it, and forces it to take Jay Garrick's place in the Speed Force prison. Keep in mind that The Black Flash is the speedster version of the Grim Reaper, and killed The Reverse Flash and almost killed Barry. Jay only has one thing to say about what he just witnessed.
        Jay Garrick: Impressive
  • Dark and Troubled Past: Bart has this hard. Take a look at his speech from Justice League Part 4.
    Bart Allen: Because of what happened on my tenth birthday. Darkseid made one final push for Earth, and the Justice League fought back. I knew that as a Kyptonian/speedster hybrid, I had the most raw power out of anyone, but I couldn't do anything because I was too young and untrained. So I had to watch men of steel die and dark knights fall. I had to watch lanterns go dark, and wonders get toppled. I had to watch speedsters be stopped and cyborgs deactivated. I had to watch robins and canaries stop singing and flames get extinguished. I had to watch atoms get split and bows get broken. I had to watch ices be melted and animals be slain. I had to watch vibrations be stilled and fate face defeat. I had to watch The Green burn and the abyss dry. I had to watch Spartans beaten and Martians bleeding. I had to watch rags get torn and dogs get muzzled. I had to watch terrific people crushed and gods among men bested. And worst of all, I saw my parents. Battered. Bloodied. Broken. Refusing to give up no matter who fell. The made one final gambit against Darkseid. A desperate gambit, Earth's final hope. A hope that brought light back to the dark, at the cost of them. They vanished without a trace into a wormhole they created to suck Darkseid away. I never saw them again until I watched another doomsday descend on my home. The rest of my friends, my family, died. And all I could do was run.
  • Dishing Out Dirt: There are two examples: Terry Mason and Elterra.
  • Early-Bird Cameo: Darkseid shows up at the end of Justice League Part 4 to kill Rhea and prepare Doomsday for battle.
  • Evil Minions: There's quite a few armies that the heroes go up against/will go up against.
    • The Parademons.
    • The Daxamites.
  • Family-Unfriendly Death: There're quite a few.
    • The ways the Justice League dies in Chapter 1.
    • Bart punches a hole through Mon-El's chest in Justice League Part 2
    • Darkseid blows a hole through Rhea's head in Justice League Part 4
  • Flashback: There are a quite a few flashbacks in this story.
    • Thea tells Bart about when Superman found out that Barry got Kara pregnant.
  • Flying Brick: Bart has the powers of Supergirl and The Flash.
  • Iconic Logo: Every hero has theirs, and Bart's a combination of both of his parents'.
  • Kid from the Future: Bart Allen.
  • Legacy Character: Bart is this to both of his parents. He even calls himself The Future Flash.
  • Making a Splash: There are two examples: Brooke Rivers and Aquolu.
  • Married in the Future: According to Bart, there's a few in his future.
    • Barry and Kara.
    • James and Iris according to Bart, though Savitar and Iris are shown to currently engaged, living together, are operating on a screw destiny basis. According to Rip Hunter, Savitar and Iris end up together with two children. Bart and Rip are both reputable sources, so only time will tell.
  • Related in the Adaptation: In this fanfiction Bart Allen, who is canonically Barry Allen and Iris West's grandson, is Barry and Kara Zor-El's future son.
  • Superpower Lottery: Bart has won this so much. His list of powers include:
  • Time Travel: The central plot of the story. Bart Allen is the future son of The Flash and Supergirl who travels back in time. Exclusive Tropes 

  • Early Installment Weirdness: The version of the story is this heavily. The Archive of Our Own version includes multiple moments of dialogue, scenes, characters, relationships, and entire chapters that this one does not. See the Archive of Our Own folder for more details.

    Archive of Our Own Exclusive Tropes 
  • Adaptation Expansion: The Archive of Our Own version of the story features multiple moments of dialogue, scenes, characters, relationships, and entire chapters that the version does not. These include:
    • Bart indicating that he doesn't want to spoil who Iris ends up with to preserve the timeline rather than saying she and James Olsen are together in the future. This likely indicates that, like in the version, she ends up with Savitar.
    • Bart outright tells Jay Garrick that Jesse revealed his identity to the inhabitants of Earth-3, something only hinted at in the original version.
    • Barry and Kara share a scene in STAR Labs where they confirm that they felt some sort of spark when they first met.
    • Related to the above piece, Mon-El now gets an expanded scene with his mother where he confirms that it is not Bart's presence that makes him turn, but the fact that Barry and Kara's feelings for each other are mutual.


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