1 - 20 of 224 Works in Sick Donatello (TMNT)
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Tether by Purpleandbluelove24
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
07 Oct 2025
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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
- Part 28 of I love the disaster twins
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Healing is the Hardest Part by IDIOTICBEAN101
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
19 Sep 2025
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Turtles are still recovering after the events of the movie.
No one's doing well, and Leo's still in a coma.Series
- Part 2 of Silent Songs
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Summary
While scavenging in an old warehouse, Donnie is hurt pretty badly, and begins to accept the likelihood of death, even once his brothers patch him up and take him home.
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Post hoc ergo propter hoc by Bemna
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, House M.D.
10 Sep 2025
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Summary
When Donnie, the family doctor, falls ill and his brothers are unable to help him they will need to turn to an unlikely ally in an effort to save him before it's too late.
House didn't expect to be kidnapped by giant turtles but he's having a lot of fun with this."You know, when people discuss drug induced hallucinations they talk about pink elephants not…"
"Orange turtles, man," he said, jumping closer to him. He opened his arms and waved them around so Dr man could get a better look. "I'm clearly an orange turtle." He turned "Can't you see this awesome shell?"
Series
- Part 1 of Doctors in a half shell
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2012 / ROTTMNT / TOTTMNT One-Shots by SmidvargAndTheGang80082
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles: Mutant Mayhem (Movie 2023), Tales of the Teenage Mutant Ninja Turtles (Cartoon 2024)
06 Sep 2025
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!!OPEN REQUESTS!!
Mostly human rat mutant, affectionately named Yuji by Splinter, joins the turtles in varied journeys to discover the secrets behind his odd mutation.
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some time you’ve had by fenkizard
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
28 Aug 2025
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Summary
some time you’ve had and you’re almost out
Things go very wrong for Donatello when side effects start to appear from the Krang ship and only worsen as time goes on. Who says a mutant turtle immune system can connect with a giant spaceship and be ok?
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Donnie's June of Doom (ft. Others) by NinjaNekosLibrary
Fandoms: Teenage Mutant Ninja Turtles (TV 2012)
13 Aug 2025
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Summary
June of Doom with a majority focus on a certain Donatello.
However, OneShots without him will be in the mix.
Shake up the hat and let's see what paper you get!
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Cool Blue by NinjaNekosLibrary
Fandoms: Teenage Mutant Ninja Turtles (TV 2012), Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
31 Jul 2025
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Summary
A Kraang portal eats the brothers and spits them out.
It doesn't get better from there.
Series
- Part 2 of Wdym stories have… Endings?
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Free Shavacado by HabitualCrashes (VampireRose)
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
22 Jul 2025
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Summary
Leo pressured Donnie into eating something new. That's fine, right?
Right?
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Summary
Leo’s been home for a while now. Things should have changed… right?
(Or: In which Donnie can’t take the stress anymore, and Leo realizes just how shitty things have gotten.)
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hippocrates by kaestar
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012)
19 Jun 2025
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Donnie approached Donatello’s lab. He’d always wondered why it was so… quiet. Their entire lair was silent compared to his own. Donatello’s lab was so peaceful, the only nuisance was any experiment gone wrong. It was plain, basic, a little empty, strangely filthy for a Donatello… but it was peaceful.
This peace remained, despite the metal bullet piercing through his left shoulder.
He was quiet, as quiet as he could be, entering the multiverse perma-portal with a bleeding gunshot wound in his flesh. The last thing he wanted was for his own Leo to worry, more than he already had. Or to get caught in his little secret war.
or: rise donnie and 2012 donatello have a little heart to heart about hypocrisy & brothers with a martyr complex
⚠️ CW gunshot wound, blood, referenced violence ‼️
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I Do Care About You by Purpleandbluelove24
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types
12 Jun 2025
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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
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Donnie 2.0 by The_Lunar_Occult_Wrote
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
30 May 2025
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"Instead, he buries them. Unfortunately, he isn't a machine that can be reprogrammed, his code scrapped and rewritten. So he ignores his problems, he forced himself to ignore them and hide them away like they never existed. If he cannot delete his problematic code, he can atleast make sure he's the only one who has to witness it."
"Maybe he should just... build a better Donnie."
><><><><><><><><><><><><><
Or, Donnie feels like he needs to be replaced. And Donnie does what's needed.
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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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Summary
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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Human TMNT Life by Tbmtns
Fandoms: TMNT (2007), Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles (Bay Movies), Teenage Mutant Ninja Turtles (TV 2003)
30 Apr 2025
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Summary
The turtles are normal human teens, living anormal life in New York.
It tells about their lives but focuses on Donatello, our genius teen.
They are rich in this story and if you want a summary of the story then I did one in the first chapter and put some of the boys features and what they look like in my opinion.
*Warning, I made Donnie Gay in this story, he is not with April. There is one sex scene. so if you don't like stuff like that you don't have to read that chapter.
*Warning Kissing
*warning kidnapping
*warning one sex scene- chapter 17 you can skip it -
The Innocent game (T-CEST) by Truebluewarrior
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)
27 Apr 2025
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Summary
As the two youngest, both Mikey and Donnie get along great, both can't never be separated, they enjoy spending time together, of course Donnie is mostly the shy one and never tend to tell anyone how he feels, Mikey is a more joyful soul but their life would soon change went they see this game that would drive them into a lot of trouble.
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Donatello was always a honest turtle. He would never lie... Right?
Series
- Part 9 of 30 days of drabbles
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Drowning by FairlandFae for keebwee
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
02 Feb 2025
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Summary
“Donnie?” Leo poked his head out, moving the sheet of hanging purple blankets out of the way. Donnie winced, rolling over and averting his gaze from the thick stream of milky yellow and orange hues like a vampire.
He must’ve looked horrible, because when he tried to argue to his brother that he ‘needed privacy and this was an in-home invasion of that’ it came out more of a garbled mess and breathlessness.
Raph poked his head in, and his playful expression dropped instantly. “Shit, D you…okay?”
No, I’m not okay, thank you for asking.
“I’m—” he coughed loudly, a cocktail of settlement forming in the back of his throat. He could feel it vibrating in tandem with his vocal cords, sticking like twisted Velcro. “—fine. Now… get… get…” a sneeze later, his testimony wasn’t sold to the jury. Not for a long shot.
Donnie struggles to conceal his sickness and fails horribly, and what he fears comes true. All for what?
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Raising the Turtles by Fluffyyyfrog9000
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
26 Jan 2025
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Summary
Kerry West collection of stories with her helping Splinter raise the turtles
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It Hurts But You'll Be Okay by Seri0uslyStr4nge
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
03 Dec 2024
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Summary
Donnie has a particularly painful IBS-C flareup and his brothers find out about it when they catch him adding a secret ingredient to his coffee.