1 - 20 of 182 Works in Leonardo Angst (TMNT)

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  1. Tags
    Summary

    Mikey was the glue that kept his family together, even when he was dying on the inside.

    When he reaches the end of his rope and disappears, his brothers realize how much they really need him, and now they have to try and fix what's broken.

    But betrayal, past pain, their own issues, and closets full of skeletons are going to make that hard.

    One thing is for sure: The four brothers won't ever be the same again, maybe for the best.

    Language:
    English
    Words:
    19,353
    Chapters:
    18/?
    Comments:
    10
    Kudos:
    20
    Bookmarks:
    5
    Hits:
    270
  2. Tags
    Summary

    After Leo is saved from the Prison Dimension, his brothers quickly realize that more happened than they had realized. Leo would get random bouts of feral bewilderment and had random triggers that had not been there before. What had happened to him?


    Gaichū doesn’t understand what happened. One moment he was in his home, running away from a beating from Master and the next… well… the next he found himself in a strange new world surrounded by new enemies who seem to know him. Now he has to learn to navigate the peculiarities of this new place and hope Master won’t find him.

    Peculiarities such as gravity.

    And light.

    Language:
    English
    Words:
    122,607
    Chapters:
    58/?
    Comments:
    1,274
    Kudos:
    494
    Bookmarks:
    67
    Hits:
    13,610
  3. Tags
    Summary

    Shredder would destroy the Hamato clan from within. An infection would eat away at them little by little, until nothing remained. His intention was clear: he aimed at the captain of the ship.

    But the responsibility for pulling the trigger wouldn't be his.

    or

    I turned caged lunges by golden into a multiversal event.

    Series
    Language:
    English
    Words:
    39,644
    Chapters:
    8/?
    Comments:
    124
    Kudos:
    144
    Bookmarks:
    29
    Hits:
    2,119
  4. Tags
    Summary

    Leo is struggling after the events of the Krang invasion. His intrusive thoughts invade his mind, but he lets Donnie in on what is going on with him. Donnie is now faced with an impossible decision on whether to keep Leo’s struggles a secret or to share it with Raph and Mikey. The answer might not be as clear cut as Donnie thinks

    Series
    Language:
    English
    Words:
    15,615
    Chapters:
    12/19
    Comments:
    14
    Kudos:
    59
    Bookmarks:
    7
    Hits:
    1,423
  5. Tags
    Summary

    Guardian
    noun
    • a person who has the legal right and responsibility of taking care of someone
    • someone who protects something

    After the turtles get separated on a different planet, Leonardo must accept the post of a Guardian in order to save his brothers, all the while hoping he doesn't lose himself in the process.

    Language:
    English
    Words:
    5,086
    Chapters:
    3/?
    Comments:
    18
    Kudos:
    40
    Bookmarks:
    6
    Hits:
    342
  6. Tags
    Summary

    After being kidnapped by a mysterious organization, the Hamato brothers are separated and experimented on—physically, mentally, and emotionally. Each is told the others are gone. But what their captors don’t realize is that the bond between these brothers is more powerful than any chain, any scalpel, any lie. This is a story of resilience, pain, and the love that holds them together even in the darkest depths.

    Language:
    English
    Words:
    19,805
    Chapters:
    31/32
    Comments:
    66
    Kudos:
    271
    Bookmarks:
    32
    Hits:
    6,419
  7. Tags
    Summary

    An infectious, deadly, unknown virus starts to spread across the TMNT multiverse.

    Language:
    English
    Words:
    27,671
    Chapters:
    7/?
    Comments:
    10
    Kudos:
    18
    Bookmarks:
    4
    Hits:
    685
  8. Tags
    Summary

    Leonardo released that pent up anger by lashing out at the younger version of himself: "The only reason we're in this mess is because you're a cocky, overconfident little brat who can't stop goofing off and refuses to take anything serious!"

    "Why did you take me outside in the first place if it's so dangerous out here we could wind up dog meat just going for a little stroll!?"

    "Because I wanted to show you what your mistake cost everybody!"

    Those harsh, clipped words cut Leo to the core. His shoulders dropped down along with that scowl on his face which was replaced with a frown, and his voice radiated sadness when he asked: "You're not talking about me using my portals, are you? This..." he looked out through the opening of the small cave-like structure they were hiding in, staring at the redness to the landscape that wasn't from the setting sun but rather by some sort of deathly apocalypse caused by these 'krang' Leonardo had mentioned, and continued: "...this is somehow my fault."

    🔹🔹🔹

    Ch 1: Whumptober 2025 #18 "As the World Caves In"

    prompts: dystopia, ruins, environmental whump

    Series
    Language:
    English
    Words:
    40,218
    Chapters:
    8/8
    Collections:
    1
    Comments:
    29
    Kudos:
    39
    Bookmarks:
    4
    Hits:
    807
  9. Tags
    Summary

    Leo ends up back in the lair after an attack, but he doesn’t feel like himself. His knee doesn’t hurt, and everything looks… bigger.
    - What the hell is— Raph? ¡NO!, Raph, don’t touch the teapot!

    Language:
    English
    Words:
    13,498
    Chapters:
    12/?
    Comments:
    55
    Kudos:
    73
    Bookmarks:
    8
    Hits:
    1,226
  10. Tags
    Summary

    Two years after the near Krang invasion and the eve of their 19th birthday, Donnie notices that Leo is not himself, becoming quieter and more distant. With some gentle coaxing, Leo finally breaks down, confessing that he has felt trapped and tired, the trauma from his near-sacrifice and the invasion not leaving him even after two years. Donnie decides to do something about and surprises Leo with an apartment that the two of them can share together

    -or-

    A series of stories of Leo and Donnie sharing an apartment in the Hidden City together, full of laughs, tears, and healing that can only be shared between two twins

    Series
    Language:
    English
    Words:
    31,802
    Chapters:
    26/30
    Comments:
    75
    Kudos:
    166
    Bookmarks:
    18
    Hits:
    3,657
  11. Tags
    Summary

    Months after the Krang invasion, Donatello begins to experience severe shell irritation. When tests reveal leftover Krang matter lodged deep in his shell from the Technodrome explosion, Leo and Draxum perform a delicate extraction procedure to save him. Recovery seems promising—until Donnie collapses weeks later and begins coughing up blood.

    After an emergency evaluation, Draxum delivers the devastating diagnosis: a rare, aggressive form of cancer, likely triggered by the Krang residue. As Donnie undergoes harsh treatment, Leo—driven by guilt, love, and fear—digs into his medical training, determined to find a cure. He refuses to let his twin slip away, even as Donnie weakens by the day.

    Series
    Language:
    English
    Words:
    30,025
    Chapters:
    31/?
    Comments:
    36
    Kudos:
    169
    Bookmarks:
    22
    Hits:
    4,207
  12. Tags
    Summary

    After Leo breaks something of Donnie’s and Donnie says some things that hurt Leo’s feelings, Leo runs away. While Leo is on the run, Donnie works hard with the rest of the family to bring his twin home. But…does Leo even want to be found? Has Donnie broken their twin bond forever?

    Series
    Language:
    English
    Words:
    3,067
    Chapters:
    4/18
    Comments:
    19
    Kudos:
    43
    Bookmarks:
    7
    Hits:
    531
  13. Tags
    Summary

    He should’ve been a better leader. A better friend. A better brother. A better son.

    He should’ve, he should’ve, he should’ve.

    But it’s too late.

    His blood is leaving him in floating scarlet ribbons, along with the crumbling bits of his shell and plastron. He knows he’s going to be dead soon, and that it isn’t just him being dramatic like he usually is. Dying is a lot more painful than he imagined. He always thought he’d die before he turned eighteen, but not like this. Not alone. He always thought he’d die out on patrol, or something, but in here, no one would even find his body. He’d just… be here forever. Would his body even decay, or would it freeze over? Would Prime eat him? Would he transform him into a Kraang zombie? Would he just play with his corpse, or something?

    …Maybe Leo doesn’t want to die.

     

    OR: Leo gets a second chance at life.

    Language:
    English
    Words:
    1,813
    Chapters:
    1/?
    Comments:
    6
    Kudos:
    13
    Bookmarks:
    1
    Hits:
    110
  14. Tags
    Summary

    A portal mishap during a dangerous battle sends Leo and Donnie into the middle of nowhere and Leo gets severly injuried, leaving Donnie to take care of him until their other brothers can arrive. However, Donnie falls ill and now it is up to Mikey and Raph to save the twins before it's too late

    A fanfic based on the comic "I Care" by @sarathrwizard on tumblr

    Language:
    English
    Words:
    39,911
    Chapters:
    17/20
    Comments:
    30
    Kudos:
    175
    Bookmarks:
    32
    Hits:
    7,538
  15. Tags
    Summary

    After the krang invasion, Leonardo feels an overwhelming guilt for almost destroying the whole world and his family.. with his newfound trauma and still healing injuries, Leo struggles with being himself again weeks after the attack; he runs away from his family to deal with his depression on his own and is missing for months while his brothers frantically search for him.

    Language:
    English
    Words:
    17,983
    Chapters:
    9/?
    Collections:
    1
    Kudos:
    7
    Bookmarks:
    4
    Hits:
    531
  16. Tags
    Summary

    Leo was sick of having to share everything with his brothers. His hoodies, his comics, his personal space; even his medical equipment sometimes went missing!

    Yet, they kept calling his selfish and inconsiderate, despite all of the sacrifices he had made over the years all for them. Speaking of privacy, those years of learning to hide his thoughts were starting to pay off, since now no one could tell when he was deceiving them, or keeping secrets of his own.

    So, of course he can't be blamed when he discovers a secret room underneath the lair, one that he can own and have all to himself.

    Or, Leo finds a new room that he then owns and keeps a secret of for years, until his brothers start questioning his disappearance.

    Language:
    English
    Words:
    8,343
    Chapters:
    4/?
    Comments:
    37
    Kudos:
    92
    Bookmarks:
    11
    Hits:
    1,877
  17. Tags
    Summary

    "You're pushing me away just like you always did!" Raph accused, earning him a scoff in contempt. But he went on anyway. "Why!? Why is it so hard for you to admit you're hurting too!? What are you so afraid of!?"

    Leo opened his mouth as if to answer. But changing his mind he turned around to continue walking down the street. Raph followed, matching his slowed pace while Leo didn't have the energy to deal with another yelling match right now so listened instead.

    "I want things to go back to the way they were before with us."

    No response, Leo kept on walking.

    "Or if they can't go back that way there's nothing saying we can't work on this, together."

    For reasons he didn't quite understand Leo walked straight past his apartment building, continuing on down the wet New York street.

    "I don't want to leave things they way they are between us. It's been too long, don't you think?"

    . . .

    🔹🔹🔹

    Whumptober 2025 - #26 "Nothing Like a Relapse to Rehash the Kid who was Scared"

    prompts: power cut, drawn curtains (ch 1); relapse (ch 2)

    Series
    Language:
    English
    Words:
    9,118
    Chapters:
    2/2
    Collections:
    1
    Comments:
    12
    Kudos:
    41
    Bookmarks:
    5
    Hits:
    405
  18. Tags
    Summary

    After taking the hit for Donnie, Leo is cursed into a robot form by the mayor of Witch Town. Everything that made Leo Leo is now written down in his programming—all his memories and personality carefully coded out inside his new robotic mind.

    But what if someone tried to… alter his programming? For good or for harm?

    Language:
    English
    Words:
    10,000
    Chapters:
    6/?
    Comments:
    73
    Kudos:
    111
    Bookmarks:
    12
    Hits:
    1,496
  19. Tags
    Summary

    Leo stumbles out onto a roof on winter’s night, the crushing knowledge of everything that has happened since the invasion weighing heavily on the young hero. But maybe the quiet beauty and the peaceful solitude will convince him that it’s all worth the fight.

    Series
    Language:
    English
    Words:
    1,321
    Chapters:
    1/1
    Comments:
    6
    Kudos:
    19
    Bookmarks:
    3
    Hits:
    190
  20. Tags
    Summary

    Leo and Donnie are on a solo mission fighting against Hypno. During the fight, Leo slips off a bridge and falls into the Hudson River. Donnie jumps in after him and the twins are taken downstream into New Jersey. With no phones, no portals, and Leo badly injuried, the twins must lean on each other to get back home

    Series
    Language:
    English
    Words:
    7,020
    Chapters:
    7/7
    Comments:
    10
    Kudos:
    106
    Bookmarks:
    17
    Hits:
    2,152

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