1 - 20 of 74 Works in Sick Leonardo (TMNT)
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Energy in exchange for luck by anastas2000
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
25 Jun 2025
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After spending a great day playing in the snow and enjoying the joys of winter, Leonardo suddenly begins to feel unwell. The family finds out about his illness, but Leo does not consider it something serious.
However, what if his condition is not related to the common cold? What if it was something darker than he could have imagined? Leo realizes that his illness may be just the beginning of a terrible journey. -
Twin Sized Mattress by Mastiff mama (Munchy_Mastiff)
Fandoms: Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles (TV 2003), Teenage Mutant Ninja Turtles - All Media Types
21 Jun 2025
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Summary: Leonardo is sick of being the selfless leader. He loves his family, and he needs his brothers — one a little more than he should — and they need him. They just don’t realize how much they do until he decides to be selfish for the first time in his life.
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Through the Rift by Ne0n_YS
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Samurai Rabbit: The Usagi Chronicles (Cartoon)
18 May 2025
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Leo gets transported through a mystic portal accident. He meets Usagi and his friends, while they are fighting a Snarling Yokai. In the process of Usagi taking care of Leo, they both fall in Love. Meanwhile, Leo’s Brothers are searching tirelessly, and end up asking Baku-San, the dream-eating Yokai, to help them find their brother.
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Ten Days by Ne0n_YS
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Samurai Rabbit: The Usagi Chronicles (Cartoon)
10 May 2025
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Leo gets his period once a month—mystic, painful, and debilitating. He tries to fight through it during a Yokai attack but collapses under the weight of hiding everything. Usagi yells. Leo shuts down. And his friends start to realize something is very wrong. A continuation work of Through the Rift
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I Should Have Eaten You In The Womb by Crowdog
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types
08 May 2025
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By eight thirty the lair was running on generator power and Donnie’s ears were ringing so loud he couldn’t even hear the baritone of the motor thrumming out in the open sewers. Note vibrating on the handle because no twin had returned home to rip it off with a roll of his brown eyes before depositing the original propane tank nearby. Donnie couldn’t hear Mikey’s voice as he asked about Leo, he couldn’t feel Raph’s hand as they brought him into the lair to warm up his frozen fingers.
Someone else moved Donnie’s mouth and made his vocal cords vibrate into the open air of their home. Someone else stood in the doorway of their father’s room begging their dad to get out of bed because Leo was missing. Someone else felt the world caving in because all the things that were supposed to be unimaginable were happening right now.
As if panic could knock back a respiratory infection Raph and Mikey hooked the TV up with Donnie’s numb help. The weather report was worse than they last knew. That blizzard that was originally projected to hit tomorrow by one in the afternoon would be here at their doorstep much earlier.
Series
- Part 1 of maybe you weren't a terrible person
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No Pain, No Gain by Ne0n_YS
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
07 May 2025
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A bunch of ROTTMNT one-shots, mainly Leo cuz I love his character and this is my work, so I can do whatever I want!
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if nothing is real, then am i sleeping? by Averie_sol
Fandoms: Teenage Mutant Ninja Turtles (TV 2012)
10 Mar 2025
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"leo?" Sleep deprivation was absolutely making this whole situation worse, his logical brain knew that. It knew that everything was real and wasnt actually all floaty it was PROBABLY dissociation and it was fine but... he just couldnt stop. He didnt actually know that any of it was real.
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Anyone up for a sleepless nights fic (that isnt a oneshot) featuring derealisation/depersonalisation surrounding leos ignored trauma?
disclaimer! you dont need to read any other story in this series to understand whats happening, theyre all their own stories just surrounding the theme of 2k12 leo not sleeping.
enjoy!
Series
- Part 5 of the stories of sleepless nights
- Part 7 of CASEYNARDO
- Part 7 of 2012 leonardo-centric
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Ghost In The Aftermath by grapejuice232 for AmevelloBlue
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2003)
26 Feb 2025
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“They’re just kids! Why the shell did they have to fight these aliens?!” Ghost snarled in his head, the ride back home was silent as Splinter, April and Casey Jones Junior visibly sagged with relief but tensed with worry as Leo let out a pained wheeze and tensed up as the tank drove over a pothole in the road.
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Daydream (adopted version) by HollowWorlds, NeonnnLeon9000, Willowloveheart
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles - All Media Types
21 Feb 2025
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Leo is usually the oldest in the show, but what if he was the youngest? What if Leo gets sent to the 2k12 universe along with his brothers? What if Leo gets hurt by the 12!turtles? How will his brothers react?
Setting:
an alternative version of the rise tmnt ( before second season & the movie) ended up in the 2012 versions world (after 2012 final season ended).Series
- Part 1 of Tmnt : Daydream series
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Hold On and Don't Let Go by Purpleandbluelove24
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
17 Feb 2025
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After experiencing the worst thing to ever happened to your family, you think that the worst is over. You think that after recovery, things would get easier. Sometimes though, life throws you a curveball, and that is nothing that you can do to change or fix it
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Leo ends up with cancer after the invasion and it becomes clear that the Hamato family might end up losing Leo all over again
Series
- Part 9 of I love the disaster twins
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Strategies are not easy by Alex (AlexEdogawaHamato)
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types
18 Jan 2025
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Leo's brothers think that strategicing is easy and are always telling Leo out when one of his plans has a failure that could lead to their defeat. Leo tries to show them that strategicing is more complicated than it seams, but his brothers are too think headed to understand.
Now Leo is sick and can't go on a mission, meaning that the others are left with strategicing on their own. Will they be able to realize the complicity of Leo's role and admit defeat? Or will they continue to be stubborn and try to fight the villain and be beaten down?
OR, Raph thinks startegies are easy, one mission proves him wrong.
READ THE TAGS, PLS.
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A Day Without Leonardo by NoonboryKedabory
Fandoms: Teenage Mutant Ninja Turtles (TV 2012)
13 Jan 2025
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The turtles must learn to fight without Leonardo after he falls ill.
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(n.) a moment to slow down and appreciate the good things in life
a leo sick-fic, requested for tmnt4p!
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I can't let you die (without knowing you are loved) by Cosmic_Firestorm
Fandoms: Teenage Mutant Ninja Turtles - All Media Types
17 Oct 2024
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Leo believes himself to be unlovable. This has consequences.
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The Seeping Cold by RealityBreakGirl for RedHairedOtaku, MackSelf, azucar_skull
Fandoms: Teenage Mutant Ninja Turtles (TV 2003)
23 Sep 2024
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The lair itself seemed a bit cool to Leo, and he shivered lightly as he silently padded to the edge of the walkway and jumped down to the first floor. Maybe he needed to have Donnie check the heating. It was a little early for it to be this cold.
Series
- Part 7 of TMNT Write Fight Fics
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You will be okay by DefinitelyaUsername for RedHairedOtaku
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
20 Sep 2024
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Leo is sick with a fever
Series
- Part 18 of Leo centric fics
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Sick as a Dog (Turtle) by MissHowdoyoudo for pickledcarrotsandradish
Fandoms: Teenage Mutant Ninja Turtles (TV 2012)
09 Sep 2024
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One by one, they fall like dominoes. Leo for SURE won't get sick, he's gonna take care of everyone!
For the TMNTWriteFight. Prompt by pickledcarrotsandradish: A Team sick fic
Series
- Part 2 of TMNTWriteFight2024
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The Day gets worse and worse by Miss_Forgetful
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
14 Aug 2024
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Leo’s day is just getting worse and worse over its course. The mission went badly, Raph got annoyed with him, and after he took a nap he got ill. Everything’s fineeee.
Yuichi is a good boyfriend to Leo <3(I found this in my notes from december and completely forgot about this. Whoops)
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Warm hands by Anonymous
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
17 Jul 2024
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A sudden freeze sneaks up on New York, coating the city in a layer of white. Unbeknownst to April, a certain family of mutant turtles aren't really taking the unexpected chill too well.
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Or, April helps save the day in her own O'Niel way (with hugs and snuggles of course)
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3 times when Raph doesn't feel like a father. by HappyFame
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types
31 May 2024
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Summary
(And once he understands that he is a)