1 - 20 of 572 Bookmarked Items in Future Leonardo (TMNT)

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  1. *

    Trial and Error by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types  

    25 Apr 2023

    Tags
    Summary

    The world ends. The Krang win. Leo failed.

    It was supposed to be on Casey's shoulders (and his shoulders alone) to go back and make sure the invasion never happened in the first place, but apparently his student had a little more inherited stubbornness than he'd thought.

    (Leo ends up in the past. This changes some things.)

    Series
    Language:
    English
    Words:
    104,123
    Chapters:
    21/21
    Comments:
    1,123
    Kudos:
    6,256
    Bookmarks:
    1,353
    Hits:
    188,585

  2. *

    little kid with a big death wish by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    08 Oct 2023

    Tags
    Summary

    Leo's mind rebelled against the sensation. The heaviness burst into awareness, body, limbs, lungs, blinking. The middle distance he'd apparently been staring in focused. Leo was awake. Leo was aware. Leo was alive.

    Being alive wasn't something he thought he'd be.

     

    or: recovery fic featuring dissociation problems, missing limbs, and Leo discovering a familiar presence in his mind. twice the trauma in one body, what could go wrong?

    Series
    Language:
    English
    Words:
    153,915
    Chapters:
    33/33
    Comments:
    3,174
    Kudos:
    3,789
    Bookmarks:
    812
    Hits:
    118,977

  3. *

    The Future Left Behind by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    27 Dec 2024

    Tags
    Summary

    In the midst of the Apocalypse, Mikey is still far from strong enough to carry out the time gateway plan, so Donnie decides to build a machine that can support him in his efforts and channel his powers in the right direction. But when the machine is ready and Donnie decides to conduct an experiment using his younger brother's ninpo, it malfunctions, and instead of bringing him something from the past, it brings him to it.

    Sort of.

    But not quite.

     

    or: Future Donnie accidentally gets sent to the Prison Dimension, and by the time he gets out, he realizes that one; he travelled twenty-two years into the past, and two; that he needs to go back and fix everything before it is too late

    Language:
    English
    Words:
    43,704
    Chapters:
    9/?
    Collections:
    3
    Comments:
    415
    Kudos:
    807
    Bookmarks:
    189
    Hits:
    20,395

  4. 62

    take my brain or what remains by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    02 Jun 2024

    Tags
    Summary

    When he blinked, Mikey wasn't on his skateboard anymore, he was kneeling in front of him with a worried look and a gentle, "Sensei?"

    "I'm good." Sensei smiled. "Sorry. Did I miss it?"

    "No. I just – you looked sad."

     

    or: sensei post death wish. what do you do when you can never go home?

    Series
    Language:
    English
    Words:
    13,417
    Chapters:
    1/1
    Comments:
    115
    Kudos:
    478
    Bookmarks:
    62
    Hits:
    3,661

  5. 61

    Crestfallen at The End of The World by ,

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    30 Jul 2023

    Tags
    Summary

    "But at least we can restart?"

    —

    At the tender age of sixteen, Hamato Donatello was trapped in a new circle of Hell, along with everyone else. Thank you, Kraang, he thought sarcastically.

    It was an accident. That's how it started. It was no one's fault.

     

    Tl;dr: Future Donnie girlbosses his way to the past and includes more people into the family that previously contained Casey

     

    AKA: it's peepaw time

     

    Chapters edited 7/27/23

    Language:
    English
    Words:
    12,550
    Chapters:
    10/?
    Comments:
    34
    Kudos:
    258
    Bookmarks:
    61
    Hits:
    3,805

  6. 2

    hiraeth by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    10 Nov 2025

    Tags
    Summary

    hiraeth [noun]: a deep longing, especially for home.

    Leonardo never expected to get a second chance.
    The rest of the family never expected to see CJ’s sensei.

    Chaos ensues.

    Language:
    English
    Words:
    1,287
    Chapters:
    2/?
    Kudos:
    11
    Bookmarks:
    2
    Hits:
    116

  7. 72

    ᴸᴵᴷᴱ ᴹᴱ, ᴸᴵᴷᴱ ᵞᴼᵁ by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    31 Jan 2024

    Tags
    Summary

    Three fingers, larger than he remembers. Greener than he remembers.

    No way is this his hand.

    But it follows his commands, pulls away when he tells it to, and. And.

    And it’s shaking, just like he is. All over.

    TL;DR Casey encounters an oozesquito. It all spirals from there.

    [I know it’s been like a year but I am coming back to this one. Temporary hiatus. Thanks for your patience guys!]

    Series
    Language:
    English
    Words:
    49,134
    Chapters:
    10/?
    Comments:
    154
    Kudos:
    317
    Bookmarks:
    72
    Hits:
    6,381

  8. 7

    Lion By Name, Fool At Heart by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    08 Aug 2025

    Tags
    Summary

    Leonardo is welcomed properly into the family.

    With a few changes and some shenanigans, he is sure to fit right in.

    Series
    Language:
    English
    Words:
    17,495
    Chapters:
    5/?
    Comments:
    12
    Kudos:
    64
    Bookmarks:
    7
    Hits:
    1,160

  9. *

    Three-Sided Coin by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    17 Aug 2025

    Tags
    Summary

    After spending weeks floating aimlessly in the Prison Dimension, Leon comes to terms with the fact that he will likely never see his family again. Of course, that’s when a portal decides to swallow him whole and spit him out into a desolate wasteland, just as lonely as before but with more gravity and fewer aliens. He desperately wants to just lie down and succumb to the wounds left by the Kraang, to go to sleep and let the sweet release of death wash over his mind, but when he meets a past version of himself, a child at the very most, he must do what he can to keep himself and…himself alive.

    Of course, it only gets more confusing when they meet a future Leo as well.

    AKA: highly self-indulgent fic where I put Leo, Future!Leo, and TurtleTot!Leo in the same room until they hug :))

    Language:
    English
    Words:
    50,908
    Chapters:
    12/?
    Collections:
    2
    Comments:
    787
    Kudos:
    1,280
    Bookmarks:
    319
    Hits:
    28,087

  10. 40

    Random Rise by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types  

    15 Oct 2023

    Tags
    Summary

    A bunch of self-indulgent oneshots about RotTMNT

    Requests accepted!

    Chap. 1 - Mikey catches a kind of mystic bug from overusing his ninpo. Raph and the twins are left struggling to tolerate each other without their resident therapist there to be a ray of sunshine

    Chap. 2 - separate bad future universe moment where… Things don’t end well

    Chap. 3 - the boys are turtles. Turtles are common pets and attractions. Someone decides to treat them like so

    Chap. 4 - Leo has insomnia and can't get a good night's sleep for like a whole week. It really sucks.

    Chap. 5 - Leo can't sleep, so he decides to make it Donnie's problem. (Read the chap. summary por favor)

    Chap. 6 - Apparently Leo is the oldest and no one takes it well

    Series
    Language:
    English
    Words:
    82,038
    Chapters:
    7/?
    Comments:
    48
    Kudos:
    179
    Bookmarks:
    40
    Hits:
    3,100

  11. 23

    Do I Look Like Him? by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    17 Aug 2025

    Tags
    Summary

    Waking up from being in a 17 year long stasis would be a headache to anyone. Especially if there’s a grown mutant turtle who just so happens to be the leader of the Resistance against the Krang was living inside their head. That’s what Caden’s situation is like now. And to top it all off, he has his own personal struggles, starting with…who the hell is he?

    Language:
    English
    Words:
    81,690
    Chapters:
    17/?
    Collections:
    1
    Comments:
    61
    Kudos:
    115
    Bookmarks:
    23
    Hits:
    2,052

  12. *

    odd man out by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    09 Sep 2023

    Tags
    Summary

    Leonardo is dead.

    Or, at least, he should be. Instead, he is floating within a colorful vortex that reminds him too much of his own portals. He tries not to think too much about it. But, eventually he is forced to when the vortex spits him out into a world that used to be his home, many, many years ago.

     

    Or; the one where Future!Leo somehow managed to luck out on a one in a million mere millisecond chance of a freak glitch in the space-time continuum that sends him back into the present, where the Invasion has been successfully driven back. And it looks like it was a one-way ticket travel.

    Obviously, everybody is So Very Normal about this.

    Language:
    English
    Words:
    66,495
    Chapters:
    11/?
    Collections:
    4
    Comments:
    984
    Kudos:
    8,118
    Bookmarks:
    1,828
    Hits:
    233,419

  13. 14

    Let’s Take A Peek Into The Life Of Casey Jones Jr. by

    Fandom: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)

    18 Dec 2023

    Summary

    This Series is based off Casey Junior’s experience living in the past — now considered the present — in a timeline of the world that isn’t overrun by the Krang.

    He gets to learn how to grieve properly. He gets to eat ice cream (biting it with his teeth—the psycho). He even learns how to ride a bike (he crashes into a ditch once on the streets).

    Most importantly, he has the turtles there, even if supposedly more younger than he thought, to help guide him in his new life and to teach him new experiences.

    He can only hope he makes good memories out of his new life, making the most of this opportunity he’d have wanted to give to his family instead.

    Words:
    44,975
    Works:
    11
    Bookmarks:
    14

  14. 6

    Why Sprinter has a room at the Nexus and other stories by

    Fandom: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)

    26 Jun 2025

    Summary

    Complete list of stories taking place in the "Why Sprinter has a room at the Nexus" world

    Words:
    33,090
    Works:
    2
    Bookmarks:
    6

  15. *

    Tapping Out by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    16 Jan 2023

    Tags
    Summary

    He waits until Leo is finished catching popcorn from Mikey’s tosses, then subtly touches his forearm.

    Three quick taps. Then three slower. Then three quick again.

    It’s a simple code, but it means something specific to the two of them: that Donnie needs out of here, and it’s on Leo to make that happen.

    Five times Leo comes to Donnie's rescue, and one time he returns the favor.

    Language:
    English
    Words:
    13,117
    Chapters:
    1/1
    Collections:
    5
    Comments:
    160
    Kudos:
    2,498
    Bookmarks:
    771
    Hits:
    19,688

  16. 56

    world's end boyfriend by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Samurai Rabbit: The Usagi Chronicles (Cartoon)  

    18 Jun 2023

    Tags
    Summary

    Leonardo lost Yuichi to the apocalypse almost exactly five years ago. It's now been a year since he, Michelangelo and Casey made their impossible portal trip to the present day, successfully preventing the Krang invasion this time - so imagine Leonardo's surprise when his little brother tells him that they're going to rescue his mate.

    They only have one chance.

    Language:
    English
    Words:
    5,018
    Chapters:
    1/1
    Comments:
    31
    Kudos:
    348
    Bookmarks:
    56
    Hits:
    3,124

  17. 4

    such a heavenly view by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    29 Oct 2025

    Tags
    Summary

    “Don, calm down,” Leonardo laughed, lounging next to them. “You’re scaring the poor kid.”

    “Can you blame me?” he purred. Leo squeaked under him. “Look at him, all wide-eyed and blushing so prettily. You’d lost this innocence by the time we got together, can’t I savor it in him?”

    “I think I’ve just been insulted,” Leonardo said lightly. “You’ve traded me in for a younger model. Y’know, I never expected such betrayal from my own twin.”

    Day 28: Creampie

    Series
    Language:
    English
    Words:
    1,686
    Chapters:
    1/1
    Comments:
    10
    Kudos:
    38
    Bookmarks:
    4
    Hits:
    601

  18. 2

    Now We're in the Ring, and We're Coming for Blood by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    06 Nov 2025

    Tags
    Summary

    Casey goes missing on patrol, and Leonardo and his brothers rush to find him. Will they make it in time, or will the Krang do their damage before they can get to him?

    Title from Glory and Gore by Lorde. Inspired and set in the world of Cass Apocalyptic series - somerandomdudelmao.

    Language:
    English
    Words:
    2,106
    Chapters:
    3/?
    Comments:
    1
    Kudos:
    10
    Bookmarks:
    2
    Hits:
    112

  19. 32

    I'll Get Up and Lay Back Down by for remrose

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    09 Apr 2024

    Tags
    Summary

    After Leo's suicide attempt, he tries to adjust to waking up after he thought he wouldn't have to anymore

    Language:
    English
    Words:
    2,404
    Chapters:
    1/1
    Comments:
    8
    Kudos:
    240
    Bookmarks:
    32
    Hits:
    2,772

  20. 32

    oh my heart by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    14 Sep 2024

    Tags
    Summary

    "Open your eyes."

    Casey hugged his arms closer to his chest, heart thumping.

    "Come on, hermano." Leo coaxed, jostling him from the left, a grin in his voice. "You made it in here. Don't you want to see?"

     

    or: post death wish casey visits sensei

    Series
    Language:
    English
    Words:
    1,298
    Chapters:
    1/1
    Comments:
    42
    Kudos:
    400
    Bookmarks:
    32
    Hits:
    2,011

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