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  1. *

    Leo, Leoo & Leon by

    Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles (TV 2003), Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    04 Dec 2023

    Tags
    Summary

    Leonardo wakes up in an unknown location which is never a good sign! He is very far from home and he doesn’t know how he got here or where here even is!

    -
    Aka a 2003/2012/2018 crossover Bc I had a dream about it and didn’t let it go

    Series
    Language:
    English
    Words:
    104,929
    Chapters:
    37/37
    Comments:
    1,612
    Kudos:
    2,058
    Bookmarks:
    309
    Hits:
    53,422

  2. *

    run for your children (for your sisters and brothers) by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)  

    13 Feb 2024

    Tags
    Summary

    In a flash, the mutant had Michelangelo pinned to the wall, one sword pressed against his throat close enough that the slightest twitch would send a waterfall of blood cascading towards the floor. His beady eyes narrowed into slits. “Where’s Raph?”

    Oh. This – did not bode well.

    Michelangelo held up a single trembling finger, pointed directly at Donatello’s one and only red-accented brother with anger issues.

    The mutant didn’t even glance Raphael’s way. “Don’t bullshit me. Tell me where Raph is, or I’ll play tic-tac-toe on your kneecaps.”

    “That’d be a hell of a game,” Michelangelo mumbled, and Donatello saw his life flash before his eyes. Not Donatello’s life, though. Michelangelo’s life. All the dumb shit his little brother had gotten away with; losing the T-Pod behind Donatello’s back, pulling daredevil stunts behind Sensei’s back, staying up late behind Leonardo’s back – Michelangelo did a lot of stupid stuff when people weren’t watching. He really did need constant supervision.

    Or, 2018 Leo gets pulled away from the fight against the Kraang in the Rise movie that ends with Raph captured. When he shows up in the 2012 universe, he's not exactly in the best mood.

    Series
    Language:
    English
    Words:
    13,266
    Chapters:
    1/1
    Comments:
    31
    Kudos:
    643
    Bookmarks:
    135
    Hits:
    6,430

  3. *

    Of Leos and Leonardos by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012)  

    27 Oct 2022

    Tags
    Summary

    "Yeah, so there’s this weird thing with Leonardo, right? And maybe Leo’s imagining it, but he’s pretty sure his counterpart actually hates him...But, that’s crazy, right? Leo has his fair share of haters, but being hated by himself? Okay, that’s not entirely new either, but you get the point. Leonardo hates Leo, and he doesn’t really know what to do with that.

    It’s not that Leo loves Leonardo either, but he wouldn’t say he hates him. He’s just… painfully, grossly, achingly jealous of his natural leadership skills that Leo can’t even dream of living up to."

    Or, through Mikey's rusty experience opening interdimensional portals, he accidentally pulls alternate versions of themselves into their world with no way home. Everyone is adjusting pretty well except for Leonardo, who finds himself constantly at odds with Leo because of his drastically different leadership style and carefree nature. It comes to a head one day in a huge blow up, leaving Leo determined to mend and build a relationship with his counterpart no matter what.

    EDIT: CHAPTER 2 WITH BROTHER REACTIONS IS NOW ADDED! :D

    Series
    Language:
    English
    Words:
    26,574
    Chapters:
    2/2
    Collections:
    2
    Comments:
    188
    Kudos:
    2,533
    Bookmarks:
    533
    Hits:
    24,288

  4. *

    Over the Rainbow by

    Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012)  

    14 Jun 2026

    Tags
    Summary

    Dad was wrong about all of those stranger danger talks. Karai was nice, and didn't offer any kind of candy or puppies from a trench coat. She even promised to get him home.

    Her help combined with whoever her father was would ensure Mikey would be back with his family in no time.

    Language:
    English
    Words:
    179,131
    Chapters:
    24/?
    Comments:
    691
    Kudos:
    691
    Bookmarks:
    169
    Hits:
    24,004

  5. *

    Stranger Danger by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles - All Media Types  

    27 Feb 2024

    Tags
    Summary

    Portals were a weird thing.

    Like most magic it seemed to be triggered by emotions. Which is fine, okay, great even! But it was also some how triggered by just running at your sibling who can also use to give them a hug while you have a mystic fritz? A lot less fine, okay, great. Then said mystic fritz flings you across New York in an alleyway all alone with a head wound and completely drained of mystic energy?

    Really not fine, okay, great.

     

    Or Mikeys switch places and the 2012 boys think they have the right Mikey

    Language:
    English
    Words:
    50,085
    Chapters:
    20/?
    Comments:
    1,080
    Kudos:
    3,291
    Bookmarks:
    452
    Hits:
    74,156

  6. 29

    3, 2, 1 by

    Fandoms: Teenage Mutant Ninja Turtles (TV 2012), Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    21 Oct 2023

    Tags
    Summary

    Casey Jones has done a lot of things. Heck, he’s even seen a lot of things. He’s touched a lot of things, too, things he probably shouldn’t have.

    A New York a mere echo of his own stands before him, crumbling beneath his feet. The dust tints the sky orange like an old western movie.

    Maybe he should’ve left that cube alone.

    He should really stop touching things that shouldn’t be touched.

     

    OR:
    A twin fic of my “And a 1, And a 2, And a 1 2 3!”. This time, we follow 2012 Casey somewhere else :)

    Series
    Language:
    English
    Words:
    39,998
    Chapters:
    2/2
    Comments:
    46
    Kudos:
    191
    Bookmarks:
    29
    Hits:
    2,242

  7. 23

    6 People, 1 Story to be Shared by

    Fandoms: Teenage Mutant Ninja Turtles (TV 2012)  

    27 Aug 2023

    Tags
    Summary

    Casey Jones has been back home for a couple days now. But just because he’s still adjusting doesn’t mean he gets a break. The Kraang invasion is near and Leo’s planned a mission. With nightmares looming over his shoulder, Casey tries to keep his head on straight.

    Unfortunately, he’s a Casey Jones. Unlucky is practically his middle name. Of course, things go south faster than he can blink.

     

    Part of a series! I suggest reading the rest first to understand.

    Series
    Language:
    English
    Words:
    13,452
    Chapters:
    1/1
    Comments:
    24
    Kudos:
    292
    Bookmarks:
    23
    Hits:
    2,049

  8. *

    And a 1, And a 2, And a 1 2 3! by

    Fandoms: Teenage Mutant Ninja Turtles (TV 2012), Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    19 Aug 2023

    Tags
    Summary

    Casey Jones has seen a lot of things. He’s done a lot of things, things that shouldn’t have been possible by the world’s standards. However… as he’s staring at a place way too bright to be his own, even he can agree that this probably shouldn’t have happened.

    He really should learn to stop touching things that shouldn’t be touched.

     

    OR:
    A tmnt 2012 and rise crossover, but specifically following 2012 Casey Jones!

    Series
    Language:
    English
    Words:
    90,745
    Chapters:
    18/18
    Comments:
    450
    Kudos:
    1,124
    Bookmarks:
    202
    Hits:
    22,629

  9. 34

    Symbiosis by

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

    01 Jul 2025

    Tags
    Summary

    Leonardo is left inside the Prison Dimension, trapped inside this barren wasteland. Left alone with his sworn enemy, Kraang...
    Or so he thought?

    Language:
    English
    Words:
    130,845
    Chapters:
    41/?
    Comments:
    106
    Kudos:
    203
    Bookmarks:
    34
    Hits:
    7,756

  10. *

    Kraang Soup (not my circus not my turtles) by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012)  

    16 Aug 2024

    Tags
    Summary

    Disaster
    dis·as·ter
    /dəˈzastər/

    noun
    noun: disaster; plural noun: disasters
    1. a sudden event, such as an accident or a natural catastrophe, that causes great damage or loss of life.

    Well, it would seem that the twins are living up to their name.

    "Leo and Donnie had been gone for three days now. He knew they were alive, but well, it was Leo and Donnie. The Disaster Twins. Leaving those two without supervision was just asking for trouble. At this point, they were either neck deep in danger, or they had founded a criminal empire and were living like kings. There was no in between."

    Or

    When a mission to stop Big Mama from getting her claws on a mysterious artifact goes awry, Leo, Donnie, and the influential spider Yokai herself end up in the 2k12 universe, their ticket home torn apart. With Big Mama’s whereabouts unknown and no way to get back to their own dimension, the Disaster Twins quickly discover the villains here are much… squishier than their own.

    Series
    Language:
    English
    Words:
    66,865
    Chapters:
    49/49
    Collections:
    1
    Comments:
    1,558
    Kudos:
    2,722
    Bookmarks:
    393
    Hits:
    65,375

  11. *

    It's an Us Problem™ now by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012)  

    11 Oct 2022

    Tags
    Summary

    It started out as just a fun night, Leo managed to get Donnie out of the lab so the two could pick up pizzas for movie night with April. Only they never reached Run of the Mill Pizza.

    Instead they found themselves surrounded by strange alien creatures and look-alike turtles in another universe entirely. No one is sure if it was the Krang or Leo's sword portal that brought them there in the first place. Can they figure it out to get home?

    Language:
    English
    Words:
    18,249
    Chapters:
    6/?
    Comments:
    170
    Kudos:
    3,420
    Bookmarks:
    573
    Hits:
    54,417

  12. *

    Mystic Instinct by

    Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012), Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    12 Nov 2022

    Tags
    Summary

    Using both of their Mystic Powers, Hamato Jitsu Draxum Donatello and Hamato Jitsu Draxum Leonardo manage to create a portal to escape from the Purple Dragons. Shame the portal was incomplete when they were forced to jump through it. Now the two Disaster Twins find themselves in an alternate universe that’s long over due for a vibe check.

    Language:
    English
    Words:
    21,164
    Chapters:
    14/25
    Comments:
    452
    Kudos:
    2,424
    Bookmarks:
    353
    Hits:
    47,558

  13. *

    In This World (It's Just Us) by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012)  

    06 Aug 2025

    Tags
    Summary

    Donnie blinked at his counterpart.

    He looked rather plain to be a Donatello. Then again it was another universe, anything was possible. Donnie couldn't fault the turtle for his lack of..Well everything.

     

    Or; Donnie and Leo go to the 2012, and the 2012 have to deal with two superpowered, probably insane versions of Leo and Donnie.

    Filled with plenty of murder, laughs, more murder, disturbing imagery and Donnie/Leo awesomeness and alternate turtle gawking. Enjoy.

    Series
    Language:
    English
    Words:
    109,645
    Chapters:
    38/?
    Collections:
    3
    Comments:
    869
    Kudos:
    3,856
    Bookmarks:
    508
    Hits:
    121,971

  14. *

    When You Jump Worlds do You Normally Become a Glow stick, or is That just a Me Thing? by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012)  

    21 May 2023

    Tags
    Summary

    Leon didn't know where he was, but these people that have his brothers' names, signature colors and turtle-iness sure do.

    On a completely separate note, he's glowing a lot. Like the glow of the fridge at 3am a lot. What's up with that?

    Series
    Language:
    English
    Words:
    2,462
    Chapters:
    1/1
    Comments:
    46
    Kudos:
    972
    Bookmarks:
    101
    Hits:
    6,513

  15. *

    In Which Donnie and Leo Make Themselves Everyone Else's Problem in an NYC That Isn't Even Their Own by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012)  

    03 Jan 2023

    Tags
    Summary

    It was a huge mistake on the Kraang's part to kidnap the wrong half of the wrong set of brothers and leave behind two very worried twins. And not just any twins. The disaster twins.

    Language:
    English
    Words:
    18,331
    Chapters:
    7/?
    Collections:
    3
    Comments:
    391
    Kudos:
    3,570
    Bookmarks:
    663
    Hits:
    54,084

  16. *

    Shredder's Vendetta by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles - All Media Types  

    30 Oct 2024

    Tags
    Summary

    Leonardo may have beheaded Shredder, but that doesn’t mean he’s gone. In fact, his soul is still very much alive, just trapped in another dimension, and now he’s a different turtle’s problem.

    (Indefinite Hiatus sorry gang)

    Language:
    English
    Words:
    248,753
    Chapters:
    33/50
    Collections:
    1
    Comments:
    829
    Kudos:
    2,689
    Bookmarks:
    499
    Hits:
    82,668

  17. *

    The Shadow of a Dead Brother by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012)  

    05 Jun 2023

    Tags
    Summary

    There were a select few things that he could remember. A glowing, golden light, radiating warmth and need. That suffocating darkness had been abruptly ripped away from him as he was suddenly falling, falling, falling.

    And all of the sudden, he's a Foot soldier with some pretty whack amnesia. Huh. Well, he'd probably be fine.

    It wasn't like he was going to have an identity crisis or have to, like.. attack alternate versions of himself or his brothers, or anything. Yeah, not at all.

    --

    TLDR: rise!leo falls into the 2012 dimension instead of his brother's arms, gives himself some pretty damn bad amnesia, and shredder basically kidnaps him.

    Language:
    English
    Words:
    114,913
    Chapters:
    27/27
    Collections:
    3
    Comments:
    470
    Kudos:
    1,873
    Bookmarks:
    344
    Hits:
    46,696

  18. *

    coming right on back for you by

    Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012), Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)  

    26 Oct 2022

    Tags
    Summary

    There’s a sudden interruption of light. It’s like a tiny, localized dawn in this corner of Brooklyn alone. A glowing circle hangs over the pier, spilling warm yellow across the water and the boardwalk.

    Mikey’s senses go to war with themselves. Obviously, historically, random portals are no good. His head knows that. But his heart is soothed by it, the way he feels when Raph is late coming home from patrol and he finally walks through the door.

    It’s golden and gentle and it feels like family.

    His brothers are tense, but they haven’t sprung into action yet. No one’s speaking. They must feel it, too.

    Rise!Mikey’s portal in the prison dimension takes Leo a little bit farther than he meant for it to. 12!Mikey finds a familiar-looking stranger.

    2012/2018 crossover

    Series
    Language:
    English
    Words:
    13,939
    Chapters:
    5/5
    Collections:
    7
    Comments:
    429
    Kudos:
    5,814
    Bookmarks:
    1,301
    Hits:
    63,869

  19. *

    The New Turtles In Town by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012)  

    04 Apr 2023

    Tags
    Summary

    Whether they were lying and secretly new enemies or telling the truth and had came here in a freak transdiemensional accident, it didn't matter; there were new turtles in town, and they were nothing like the old ones.
    ~
    Or, after messing around with leftover Krang technology (thanks a lot Donnie) the Rise Turtles end up in the middle of Season 1 of the 2012 series. And trust me, they're gonna leave a mark.

    Language:
    English
    Words:
    26,770
    Chapters:
    10/?
    Collections:
    1
    Comments:
    119
    Kudos:
    1,085
    Bookmarks:
    197
    Hits:
    19,774

  20. *

    Mystic Malfunction by

    Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles - All Media Types  

    18 May 2024

    Tags
    Summary

    So, Mikey is faced with two negatives and one positive.

    Positively, he's powerful enough to open portals to worlds he didn't even know existed.

    Negatively, he owes Donnie his entire allowance for a year. And, more importantly, Mikey is stranded in a different dimension with no clear way home.

    Why can't he have a normal day for once?

    Series
    Language:
    English
    Words:
    242,818
    Chapters:
    36/36
    Collections:
    5
    Comments:
    3,314
    Kudos:
    5,341
    Bookmarks:
    1,007
    Hits:
    188,649

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