1 - 20 of 51 Bookmarked Items in Battle Nexus Champion Leonardo (TMNT)

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  1. 29

    Villain Donnie AU by

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

    15 Aug 2025

    Summary

    "Something's made your eyes go cold...."

    In which Donnie becomes a villain post-movie.

    Words:
    19,182
    Works:
    11
    Bookmarks:
    29

  2. 41

    The secret life of a turtle by

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

    20 Apr 2025

    Tags
    Summary

    "I want to fight in your Battle Nexus" At this Big Mama raises an eyebrow. "Oh? On what exception?" She asked him with a smirk."My family can't find out about this," He replied with a straight face.
    Or Leo wants some freedom in his life and decides to join the Battle Nexus in secret but in doing so, Big Mama accidentally becomes his mother figure and he may or may not have a crush on his "co-worker" Usagi
    OR or my twist on the "Battle Nexus Champion Leo Au" : )

    Series
    Language:
    English
    Words:
    16,206
    Chapters:
    14/?
    Comments:
    142
    Kudos:
    239
    Bookmarks:
    41
    Hits:
    5,595

  3. 17

    Bleeders by

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

    09 Sep 2025

    Tags
    Summary

    The job was simple—which meant it was doomed from the start.

    One data heist goes sideways, and you find yourself the new object of fixation for two of the underworld’s most dangerous mutants.

    Language:
    English
    Words:
    2,683
    Chapters:
    1/?
    Comments:
    16
    Kudos:
    58
    Bookmarks:
    17
    Hits:
    335

  4. *

    Full Lair (It Takes Five) by

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

    20 Aug 2023

    Tags
    Summary

    After accidentally coming back from the future, Leonardo does nothing but waste hot water, lick frosting off of Pop-Tarts every morning, leave crumbs on the floor while watching soap operas with Splinter, and suffer abnormally frequent mental breakdowns

    A least until he is thrown into an unexpected Nexus Battle against a certain White-Furred opponent and forced to not only figure out a way to get them both the hell out of there, but also how to avoid the consequences of their actions.

     

    or: All the times Nardo denies having a crush on Usagi, the couple times Usagi does the same, and the one time little Leo Parent Traps them into a confession.

    Series
    Language:
    English
    Words:
    65,819
    Chapters:
    16/18
    Collections:
    3
    Comments:
    526
    Kudos:
    840
    Bookmarks:
    184
    Hits:
    23,878

  5. 17

    Captured, Rise AU by

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

    07 May 2024

    Tags
    Summary

    Roa Drakon, Big Mama’s enforcer, for the past six years she has been indebted to the crime boss, eagerly awaiting until her contract was up, and her debt was paid. However in the last year, Big Mama decides to reward her for her diligent service with an unusual gift.

    A seven foot, red eared slider who looks like he’d seen better days.

    He has no intention to be her ‘pet’ and she has no intention to keep him as her ‘pet.’

    So they make a deal, survive this last year in Big Mama’s servitude playing the part of master and pet, and when it’s all over, they’ll disappear from her life, and each others.

    But not everything goes according to plan.

    Series
    Language:
    English
    Words:
    4,122
    Chapters:
    1/?
    Collections:
    1
    Comments:
    20
    Kudos:
    81
    Bookmarks:
    17
    Hits:
    1,012

  6. *

    cherry by

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

    29 Apr 2025

    Tags
    Summary

    Finding out you’re looking for a place to live, Big Mama offers you a new job and a new living space.

    You didn’t know that your new job would entail a turtle that walked on two legs being obsessed with you.

    Language:
    English
    Words:
    89,475
    Chapters:
    31/?
    Comments:
    737
    Kudos:
    1,117
    Bookmarks:
    132
    Hits:
    29,532

  7. 7

    What Survives the Fire, Deserves to Burn by

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

    13 Jul 2025

    Tags
    Summary

    And you walk. Because stopping would mean admitting that you've lost.
    But the truth is... You've already lost. Everything.

    In the middle of the ruins, he's there. Always there.
    The hero who wasn't fast enough, the savior who failed. The enemy who now watches, like someone looking at a shattered work of art. Broken, but yet beautiful in its collapse.
    He doesn't smile, not anymore. But his eyes betray what silence cannot contain.
    You hate him, and he likes it.
    You blame him, and he accepts it.
    Maybe, deep down, he wants to be punished. Or maybe he just wants to disappear inside your collapse.
    To slip into the cracks of your soul and make a home where no one else dares to stay.

    Language:
    English
    Words:
    7,925
    Chapters:
    3/?
    Comments:
    7
    Kudos:
    31
    Bookmarks:
    7
    Hits:
    503

  8. *

    Blue Lightning by

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

    03 Nov 2023

    Tags
    Summary

    After Splinter announces that Leo is now the leader, everything quickly moves downhill. Raph won’t speak to Leo, Donnie snarks and pokes and prods at him and Mikey comforts the other two all while avoiding Leo, because apparently, he didn’t need help. They all……blamed him. He didn’t want this, he’d NEVER wanted this, but now it was his fault?! When he confronts Splinter about it, the old rat just waved him off, saying “You’ll get over it Blue, now MOVE, you’re blocking the TV!!!” which honestly made Leo realize how much Splinter had done that growing up, and that it probably wasn’t okay.

    (Or)

    Leo has enough and decides to leave. Que the Battle Nexus, Big Mama, Hueso, and getting to know Villains! What happens when, about four months later, Donnie makes a portal and brings through their alternates, but realizes he needs Leo’s help? Chaos!

    (I changed up the timeline of Splinter making Leo Leader. Why? Plot Convenience.)

    Language:
    English
    Words:
    24,162
    Chapters:
    9/?
    Comments:
    269
    Kudos:
    1,236
    Bookmarks:
    194
    Hits:
    21,962

  9. 72

    Two Is The Loneliest number by

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

    11 May 2025

    Tags
    Summary

    Not quite willing to give up so quickly, Big Mama sent for years search teams to look for her beloved Lou. Just imagine her suprise when finally one of the teams came back with a red eared slider mutant who is supposedly Lou's son.
    The suprise turns even less pleasent when a certian sheepman rudly bursts to her office, demanding his creation back.

    OR

    Despite everything Raph or dad say, Donatello knows beyond a shadow of a doubt that his long missing twin is still out there. And he would do just about anything to get him back. Including trusting the masked stranger who claims he just wants to help, for a price.

    OR

    Two's life were just on the right track, untill three horribly familair faces started to turn his life upside down. Well, nothing like a little prank as a revange for the way they wronged him all these years ago, right?

    Language:
    English
    Words:
    31,742
    Chapters:
    15/?
    Comments:
    223
    Kudos:
    468
    Bookmarks:
    72
    Hits:
    9,847

  10. *

    Terms and Conditions by

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

    05 Oct 2023

    Tags
    Summary

    A mission gone bad.

    Leo is bitten and infected by an old Yokai disease, leading him to become near feral. The family has to work with this dangerous, scared and destructive Leo while Draxum and Donnie work on a cure.

    But surely, Leo couldn't get into too much trouble when he slips away from the lair, right?

    Or
    Leo goes feral and gets kidnapped, trauma ensues, loosely inspired by "I have no mouth and I must scream"

    Takes place after "Repairin' the Baron" and is just an excuse to write more about the Hidden City and mystic stuff

    Language:
    English
    Words:
    171,786
    Chapters:
    16/?
    Comments:
    140
    Kudos:
    645
    Bookmarks:
    137
    Hits:
    22,015

  11. 10

    Full Lair verse by

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

    20 Aug 2023

    Summary

    FL AND ALL RELATED FICS

    Words:
    73,033
    Works:
    2
    Bookmarks:
    10

  12. 69

    A New Champion Or His Father's Shadow? by

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

    08 Mar 2024

    Tags
    Summary

    Leo's brothers had gone out on a mission three hours ago. Leo hadn't wanted to go because his knee was hurting.

    Now he wishes he had.

    Series
    Language:
    English
    Words:
    23,335
    Chapters:
    20/20
    Comments:
    185
    Kudos:
    412
    Bookmarks:
    69
    Hits:
    7,235

  13. 5

    Big Mama's Boys by

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

    19 Sep 2025

    Tags
    Summary

    Three months have gone by since Othello was adopted by Big Mama. He's happy. Atticus is elated. Big Mama is proud! But their enemies seem to have gone underground. What could that mean? Is the danger past or are they just waiting for the right time to strike? Will Raph and Mikey come around to their side? Can they convince Atticus and Othello that they've changed?

    ****

    Or - Part 2 of Atticus and Othello. If you haven't read Part 1 go read that first or this one won't make sense.

    Series
    Language:
    English
    Words:
    27,307
    Chapters:
    16/20
    Comments:
    152
    Kudos:
    72
    Bookmarks:
    5
    Hits:
    2,214

  14. 3

    ROTTMNT LOVERS by

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

    26 Mar 2025

    Words:
    184,502
    Works:
    5
    Bookmarks:
    3

  15. 1

    Mockingbird by

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

    30 Jan 2025

    Summary

    My tmnt au; She had a missing sibling, her father is dead, and now she has three kids to raise. But hey, what else is new in the life of Lavinia?

    Words:
    34,757
    Works:
    8
    Bookmarks:
    1

  16. 76

    at least they stayed in the family by

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

    20 Jan 2023

    Tags
    Summary

    When Draxum’s lab goes down in flames, Lou Jitsu is only able to escape with one turtle, not four.

    Distraught over his failure, he’s determined to make it up by pouring everything he has into raising his remaining son right. Mikey grows up with a loving father, but also as an only child, and after hearing stories about his brothers who were lost that night, can’t help but want to believe they’re still out there.

    Elsewhere, Draxum discovers a soft shell turtle among the rubble.

    Elsewhere, Cassandra Jones finds a mutant turtle afraid of being alone and declares him her brother.

    Elsewhere, Big Mama gets her hands on a strange turtle with Lou Jitsu’s blood running through his veins.

    They grow up separated and with vastly different parental figures but one thing is inevitable: Family has a way of finding each other.

    (Or Mikey stays with Splinter; Donnie is left behind in the lab with Draxum; Raph is raised alongside Cassandra Jones, and Leo ends up getting picked up by Big Mama. Many things change but some things stay the same.)

    Series
    Language:
    English
    Words:
    14,360
    Chapters:
    3/?
    Collections:
    2
    Comments:
    44
    Kudos:
    390
    Bookmarks:
    76
    Hits:
    6,133

  17. 15

    Return of a Champion by

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

    26 Dec 2022

    Tags
    Summary

    A brief look into F!Leo’s life once he somewhat settles back in the lair and visits Big Mama for the first time since he left.
    (Contains minor spoilers for Dead Man’s Deal)

    Series
    Language:
    English
    Words:
    4,877
    Chapters:
    1/1
    Comments:
    12
    Kudos:
    166
    Bookmarks:
    15
    Hits:
    1,426

  18. 36

    Leo centric fics by

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

    23 Dec 2024

    Summary

    Leo is my favorite character if you couldn't tell lol

    Words:
    41,564
    Works:
    6
    Bookmarks:
    36

  19. 25

    Kodoku: Centipede and Spider in a Box by

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

    02 May 2025

    Tags
    Summary

    Kodoku is an ancient japanese black magic curse which involves trapping various insects in a jar and making them fight and eat each other till only one, the deadliest remains.

    Big Mama's Battle Nexus faces not so great times lately. In order to draw back her crowd she decides to offer a new kind of show. One that might be more brutal than the previous ones. How lucky she struck a deal with Baron Draxum in the past and got her spidery legs on some custom mutagen.
    Now she's up to no good when she starts to mutate random insects, much to our turtle heroes' annoyance.
    But wait, when did Leo end up tangled in the evil spider lady’s web?

    OR Big Mama captures Leo and the poor turtle's life takes a turn for the worse when he finds himself, cursed, mutated and fighting for his life. (Not necessary in that order.)

    Language:
    English
    Words:
    63,728
    Chapters:
    12/14
    Comments:
    147
    Kudos:
    124
    Bookmarks:
    25
    Hits:
    3,102

  20. 54

    Dead Man's Deal AU by

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

    01 Mar 2025

    Summary

    It all starts with a spider, and a turtle from the future who’s desperate to make a deal.

    aka Future Leo comes with Casey to the past au

    Words:
    115,891
    Works:
    10
    Bookmarks:
    54

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