1 - 20 of 22 Bookmarks by Duckwithdeviousintent
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So, this is now becoming a thing HAHA
The boys get introduced to society in the worst way possible. They can treat a broken bone, some bruises, maybe a couple gashes. But there are definitely not enough resources in the sewers when Leo seizes.
Bookmarked by Duckwithdeviousintent
04 Jul 2026
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Hyperactive Hypothermia by VeryAngryGremlin
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types
18 Feb 2023
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Summary
Snow day ruined for the second year in a row!
They had expected a break, but they really couldn't ever catch one.
How could they have known mystic fire was so uncontrollable?
Maybe standing on the ice lake was the first bad idea.
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OR: The brothers go out for a snow day, but it quickly goes south after multiple avalanches and other shenanigans leaves Mikey without any winter clothing and trapped with Donnie under the snow.
- Language:
- English
- Words:
- 14,206
- Chapters:
- 5/5
- Comments:
- 109
- Kudos:
- 1,124
- Bookmarks:
- 189
- Hits:
- 13,392
Bookmarked by Duckwithdeviousintent
26 Jun 2026
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I Hope You Know You’re Not Alone In That Hell (So Don’t You Worry ‘Bout Me) by Calliopes_Anon
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types
22 Jun 2024
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Summary
There are days, Raph notices, when his Pops can't get out of his armchair and time passes him by in a daze, and it worries him a lot. Even from a very young age. Who is going to look out for his little brothers?
Raph steps in, practically no questions asked. He sees their Pops struggling and as the oldest, decides it’s his job to help whenever he can! He just… maybe would prefer it if the others didn’t know about Dad’s situation. Like, at all.
Cue Donnie: hungry for knowledge and attuned to the patterns of the family. So what does he do when he notices Dad’s absences growing more frequent, and stretching for longer periods of time? He finds out what’s happening, of course!
From then on, Raph and Donnie work together to keep Leo and Mikey in the dark about the severity of their dad’s state. But how long can they keep it up before everyone finds out just how much Raph and Donnie have taken over caretaking?
(a.k.a a 5+1 fic, where we see five times Raph and Donnie took care of Leo and Mikey because Splinter couldn't, and the one time they don't have to. Begins in their adolescent years and slowly progresses up to canon timeline.)
Series
- Part 2 of Cal's ROTTMNT Fics
Bookmarked by Duckwithdeviousintent
26 Jun 2026
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Make Me a Promise Here Tonight (Love Like a Tidal Wave) by Imthebest_ever for aethernight, FanGirlFreak16
Fandoms: Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles - All Media Types
30 Oct 2024
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Summary
A slight rewrite of The Power Inside Her, mainly from Donnie’s perspective, as well as an aftermath.
Bookmarked by Duckwithdeviousintent
19 Jun 2026
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Thoughts About a Boy by jaywritezshitz
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)
07 Jul 2025
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Summary
A series of unsent letters from one Hamato Donatello to a certain Casey Jones; letters which remain unsent, but not unread.
Or: Donnie deals with his obsessive tendencies through writing letters.
Bookmarked by Duckwithdeviousintent
18 Jun 2026
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In a Different Place and a Different Time (But More So Than Usual) by Tae_rhymeswithslay
Fandoms: Teenage Mutant Ninja Turtles (TV 2012), Samurai Rabbit: The Usagi Chronicles (Cartoon)
23 Mar 2024
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Summary
yall know the drill, the rabbit gets blasted into the turtle dimension like he has in every iteration of tmnt except this time its Usagi Yuichi in the 2012 universe.
bada bing bada boom: leosagi slowburn
im pretty much planning to work on this fic whenever im burnt out from my other ones. the “shrek” of my never ending fanfic collection if you will
proud to be the only multichapter fic on ao3 with this ship (i honestly don't know what that says about me as a person) they're both lowkey ugly and animated bad cgi with their eyes way too far apart, so they’re perfect for eachother
NOTE: THIS IS USAGI YUICHI, NOT MIYAMOTO. IK IN THE 2012 SERIES MIYAMOTO USAGI IS A CRUSTY DUSTY MIDDLE AGED MAN I DO NOT SUPPORT THAT VERSION OF LEOSAGI.Bookmarked by Duckwithdeviousintent
18 Jun 2026
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Not As Bad As It Could Be (Gradually Getting Worse) by ObsidianCreates
Fandoms: Teenage Mutant Ninja Turtles (TV 2012)
11 Nov 2022
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Summary
Pain in his stomach is to be expected after Vizioso nearly cut Donnie open. After a lucky shot with a rocket, a resulting crack in his plastron, a near-vivisection, and a very narrow save by his brothers... the real worry would be if he was fine.
He is very, very not fine. But hey, it could be worse... right?
(You don't need to read the previous entry in this series to understand it, but I would recommend it, as I rewrote Donnie's experience from Mutant Gangland and made it a little more... intense, which is a factor in this story)
NOT ABANDONED I often take months to even years to update fics because Various Reasons but I promise I intend to return I just can't promise when
Series
- Part 2 of Donnie's Going Through It
Bookmarked by Duckwithdeviousintent
14 Jun 2026
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Summary
Donatello dies, everyone's pretty bummed about it...
But he gets brought back!
It doesn't go as smoothly as they thought.
Warning! This fic contains mentions of suicide, self harm as well as a suicide attempt. Read at your own risk.
Also Jonatello (I couldn't help myself)
Series
- Part 2 of Funny little Jonatello Fellows
Bookmarked by Duckwithdeviousintent
19 Apr 2026
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Mind Swap AU by KKscendants
Fandoms: Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles - All Media Types
28 Oct 2023
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Summary
Donnie groaned, rubbing his head and leaning back in the chair Mikey had been rolling around in. “Did it- did it work?”
OR
Donnie replicates the Kraang tech used in that one episode and now Mikey’s going through it (Donnie will, too, once the negative parts of being in Mikey’s body sets in).
Bookmarked by Duckwithdeviousintent
19 Apr 2026
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Summary
The invasion had taken a lot out of Donnie. With the wounds in his shell, to the nerve damage in his arm, to the... almost loss of his twin. His head was a jumbled mess.
Weeks had gone by, and the air in the lair didn't change much. Mikey tried his best to cheer everyone up, but Donnie could tell his little brother was struggling.
Leo hadn't woken up from the coma he was in, and Raph? Raph rarely left the med bay.
Entering the med bay, it took Donnie too long to notice the way Raph's posture was stiffened. How the snapper was glaring at him. How his eyes- Wait. Was that Krang goo on Raph's shoulder...?
Bookmarked by Duckwithdeviousintent
09 Apr 2026
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Summary
What draws independent strangers together? What is it about another human being that elicits "sparks"? A phenomenon whose clarity can only be obtained from experiencing it firsthand. Donnie hoped he'd found that in April. The one person who's conjured this mess of butterflies within his stomach. But maybe those kinds of "sparks" are better suited under a different category. Maybe the aggrandized feelings of interdependence he'd been searching for were found in another. Or maybe that kind of bliss was only reserved for humans and not walking ambiguities. It was impossible for Donnie to know.
|| If not human, why human shaped? :( ||
Bookmarked by Duckwithdeviousintent
04 Apr 2026
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And it all starts again by Non_Parsimonious
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)
13 May 2026
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Summary
The Turtles had settled into a sense of normalcy, but Splinter's death still hung over them. New York had become much quieter than it had been in a long time, but quiet never seemed to like them all that much.
Bookmarked by Duckwithdeviousintent
15 Feb 2026
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Summary
“Hey, Robbie?”
“Hm? Oh, what’s up, Sonar?”
Shit. What is up? The sky?? (He looks up as he walks, just to check.) He hasn’t planned this far. He turns to Malevola for help, but she unfortunately seems just as confused as him.
“Preferably today, Sonar.”
“Fffuck. Um. H-hey Robbie—”
“You said that already—”
“Are you free tonight?”
Or: after Robert fires Coupé over Sonar, the latter invites him out for a drink. It doesn’t take long for the two to catch feelings for each other, and for them to get closer. Over the course of the following months, they find out just how much they have in common, and only fall deeper in love.
But love between a recovering addict and a traumatized, depressed dispatcher isn’t quite a picture-perfect movie, and Robert and Sonar, as well as the entire Z-Team, face trial after trial on their road to redemption. With Invisigal putting lives at risk and Coupé wanting revenge for her annexation, it’s only a matter of time before shit hits the fan — maybe even beyond fixing.
- Language:
- English
- Words:
- 61,559
- Chapters:
- 6/?
- Collections:
- 1
- Comments:
- 421
- Kudos:
- 1,596
- Bookmarks:
- 250
- Hits:
- 30,774
Bookmarked by Duckwithdeviousintent
10 Jan 2026
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Even Though I'm Not A Dancer by monocrome_or_invariant
Fandoms: Teenage Mutant Ninja Turtles (TV 2012)
23 Feb 2024
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Summary
It was all so... foreign. The Casey who had lived in this house for months was not the same one standing there now. He looked mostly the same, but he felt so extremely separate from what he was.
Or
The gang goes back to the farmhouse for a vacation and everyone has emotions to work through.
Bookmarked by Duckwithdeviousintent
26 Dec 2025
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Farmhouse Frenemies by Tae_rhymeswithslay
Fandoms: Teenage Mutant Ninja Turtles (TV 2012)
28 May 2025
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Summary
In order to get along without ripping each others heads off, Donnie and Casey make a truce to put their rivalry aside while working together in the barn. They soon find themselves confiding in each other about their crazy lives since and before the invasion, leading the two to a rocky friendship and maybe more...
2012 FARMHOUSE ARC MY BELOVED
Bookmarked by Duckwithdeviousintent
24 Dec 2025
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Open Your Shell To Find Your Wings by Jellyfish_Sandwich
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types
30 Nov 2025
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Summary
After being stung by an oozesquito, Donnie gains some new mutations. His soft shell splits in two, becoming elytra and beetle wings, whilst antennae sprout from his head.
Rocked by the sudden change to his anatomy, Donnie tries to hide what happened.
And becomes more and more desperate to do so as time goes on.
- Language:
- English
- Words:
- 113,438
- Chapters:
- 47/?
- Comments:
- 1,126
- Kudos:
- 2,159
- Bookmarks:
- 290
- Hits:
- 55,747
Bookmarked by Duckwithdeviousintent
28 Nov 2025
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Text Me Again and I Will KILL YOU (with rizz) by Tae_rhymeswithslay
Fandoms: Teenage Mutant Ninja Turtles (TV 2012)
25 Jun 2024
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Summary
I can't express how much of a trash fic this is
Casey gets the wrong number from his tutor.
Oh well, the guy on the other side of the line seems to be smart either way, so it's not a total loss for him...
Besides the fact that this stranger is the shadiest online presence he's ever encountered.
On the other hand, Donatello's phone keeps buzzing with notifications from some dumb idiot who can't pass trig to save his life.
He might as well help where he can...Bookmarked by Duckwithdeviousintent
28 Nov 2025
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fellas is it gay to fall in love with your rival? by pizzabagelenjoyer
Fandoms: Teenage Mutant Ninja Turtles (TV 2012)
08 Feb 2026
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Summary
Donatello isn't entirely sure when Casey became something other than a rival/friend/it's complicated, and he desperately wants whatever these feeling are to go away.
Unfortunately, his brothers like to meddle.Casey definitely has a crush on Donnie, so he's cooking up a plan to win the turtle over. Unfortunately, April seemed to take his joke-flirting to heart...
OR: local insomniac's jonatello brainrot but the author decided to make it into an actual multi-chap fic instead of whatever she was doing before.
THIS IS NOT APRIL BASHING THANK YOUSeries
- Part 4 of local insomniac's jonatello brainrot
Bookmarked by Duckwithdeviousintent
28 Nov 2025
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Summary
Casey tries to help Donnie get his mind off the stress of their situation but it ends up leading to a mistake both of them keep repeating.
Or
Donnie and Casey get drunk and make out a concerning number of times.
Bookmarked by Duckwithdeviousintent
15 Oct 2025
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The Higher the Climb, the Further You've Come by CricketFerguson, Lucatea
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)
11 Mar 2025
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Summary
Suddenly it all makes sense, yet there are still more questions.
Donnie is back, but how was he not himself?
why is C-314 still holding onto his memories?
and what's the taunting familiar voice that keeps trying to break through his defenses?Series
- Part 3 of Feral!Donnie
Bookmarked by Duckwithdeviousintent
17 Sep 2025