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Lost and Found by SilkNettle
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
01 Feb 2026
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Summary
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“What do you mean? Who’s your sensei then?” Mikey asks.
“Master Leonardo!”
“Who?” Raph asks, bewildered.
“We don’t know anyone by that name.” Donnie adds with a raised brow, everyone nodding in agreement.
Casey blinks at them, utterly baffled.
“But Master Leonardo… is your brother.”
A pause.
“OUR WHAT?!”
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In one world, four brothers grew up together.
Lived together, fought together, saved the world together.In this world, one grew up all alone, the other three none the wiser.
It takes a living spoiler warning come back from the future to bring the truth to light..
Series
- Part 1 of Round the River bend
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Survivor’s Guilt by JupiterJimsBootyyyShaker
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
01 Feb 2026
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One missed shot is all it took to nearly kill Leonardo.
Canon divergent fic if during the Rise of the Teenage Mutant Ninja Turtles movie, Leo didn’t come out of the portal safely. His family struggles with the aftermath of the devastating accident.
Raph-centric. -
Come Back Home, Please by UniversalPie
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types
31 Jan 2026
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"It all happened so fast. One second Raph’s fists were clenched by his sides, shoulders tense and trembling, listening to Leo shout at him for stealing the yellow crayon and breaking it—that he knew it was Mikey’s favorite, and he ruined it (of course he knew that! He didn’t mean to break it, it was an accident!)—and the next, Leo was on the floor and Raph’s knuckles were stinging, still suspended midair."
Or, Raph runs away as a tot and finds his way into Big Mama's Introductory Battle Nexus Program.
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After the events of the Fourfold Trap, Donnie's self worth hits rock bottom and he decides a self-inflicted punishment will fix him up anew.
A certain blue-clad turtle has an inkling feeling to check up on their resident genius. A challenge for the three brothers arises as they have to put broken pieces of a whole together, both metaphorically and literally.
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it's how you say it by MagicalSpaceDragon
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
27 Jan 2026
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Common knowledge is that Leo's not good at this.
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I'm Not An Organ Donor by Crowdog
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types
24 Jan 2026
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Summary
Merging with a Technodrome has life altering consequences... or more specifically life ending ones. While dying is uncomfortable, awkward, (and a bit of a chore,) the idea of his family continuing on without his technical skills is unbearable. Literally the pineapple on his pizza. The concept is so grating that Donnie will do anything to make sure his family is taken care of once he's gone: Even if it means transplanting another version of himself from another timeline to take up the job opening.
In Casey's Timeline his Donatello died in an extremely convenient-to-obscure way. A body was never found and his death was never explicitly witnessed. The only reason they know Master Donatello "died" is because his circumstances were "inescapable" but Donnie is sure he can put up some air quotes. Removing this other Donatello from Casey's Timeline wouldn't change the future that has already happened or create a new timeline. So what's the harm in taking someone from a timeline that doesn't need them anymore?
Or: Donnie needs to replace himself before he dies at the young age of seventeen and Master Donatello becomes the candidate for that endeavor... by force.
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I Won a Part of You by CursedCatChild
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
24 Jan 2026
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The Techno drone wasn’t meant to be ever separated from its pilot. Yet Donnie forcibly got ripped out of it. But that never meant that the Techno Drone also got ripped out of Donnie. Or that the softshell’s parts all come back with him. What will a turtle do if he finds out that he’s partially Krang and that part is actually the majority of him?
Or the Techno Drone didn’t just Krangified, but straight up made Donnie 70% Krang. Of course with a species change comes some freaky new instinct, issues and body horror worthy transformations. Drowning in intense self hatred and fear of losing his brothers ( especially his twin) of course he tries to face all these challenges all alone.
Basically another Krang-Donnie AU, but trust me this is going to be a rollercoaster of very gory, very sweet and have a lot of made up Krang lore you never knew you needed.
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Wayward Sons by Dreamy__Archangel
Fandoms: Teenage Mutant Ninja Turtles (TV 2012), Supernatural (TV 2005)
22 Jan 2026
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« The past is a shadow that haunts every step »
Rafael and Donatello Hamato; an example of what can happen when you want to live in ignorance, in a bubble full of lies, escaping from the past. Avoiding who they are, their family's secret, and what they once experienced.
"Dad went hunting. He hasn't come back in days."
What happens when your fantasy bubble bursts? When the past finally catches up with you?
[ . . . ]
Just a rewrite of Supernatural with the Teenage Mutant Ninja Turtle characters.
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Amar no es curar, es quedarse mientras sana. by XxmisslandieXx
Fandoms: Teenage Mutant Ninja Turtles (TV 2012)
07 Jan 2026
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Donnie está cansado y solo quiere enseñarles a sus hermanitos a ser independientes sin vivir con el miedo constante al abandono.
Mikey solo quiere estar con su hermano mayor, sin pelirrojas ni jugadores de hockey interponiéndose en su tiempo compartido.
April solo quiere sanar, incluso si eso significa aprender a cuidar de Donnie mientras aprende a cuidarse a sí misma.
Casey solo quiere estar ahí para Donnie. No quiere besos ni promesas: su presencia es más que suficiente.
Raph no quiere lastimar a sus hermanos, así que se aleja.
Leo no sabe cómo mejorar la situación y, por miedo a empeorarla, prefiere dejarla tal como está.
Splinter ama a sus hijos y confía en ellos, sin notar que algunos todavía dudan de ese amor.
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Run Away Turtle by Haru_FRF
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
07 Jan 2026
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Summary
Basically I try to put out info and blurbs of my oc and villain Donnie! I already have a story, (it's irl and I can't currently find it) but I realized that I can at least put this out there! I will eventually write out the whole story on here and put it out for anyone interested, but these losers have been stuck in my head for YEARS.
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Rabicica by LilCrewGoo
Fandoms: TMNT - Fandom, TMNT (2007), Teenage Mutant Ninja Turtles (TV 2003), Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles (TV 1987), Teenage Mutant Ninja Turtles (Mirage Comics), Tmnt last ronin
02 Jan 2026
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Summary
An infectious, deadly, unknown virus starts to spread across the TMNT multiverse.
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WORK and nothing but by GtheVIP1
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
21 Dec 2025
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Donatello is a hard worker. Sometimes he takes it a little too far
Or
I really wanted to make a sickfic for this lovely purple turtle.
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Tmnt Fantasy AU by Gzawg
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)
03 Dec 2025
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And so, in some stupid way, because of a few measly threats, that April was sure weren't even legit, by the way, she had to have a bodyguard.
No, she was sure it would be awful.
Aka
Apritello Fantasy AU ✌️🌞
April's a princess, Donnie is her guard, she drags him on an adventure.
Leo just wishes someone would tell him what's going on 😭. -
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Being a young teenager is difficult, especially with so many responsibilities and problems overwhelming him. He fights villains, resolves conflicts, saves the city... Even so, nothing was as terrifying and despairing as the strange yet pleasurable sensation he felt in his chest when he was just "Her."
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i'm living out of spite by olivr_the_gr8
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
19 Nov 2025
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Leo’s always been selfish. Issues upon issues, with him. Things changed after the krang, after the prison dimension. He became quieter, isolated himself more. Maybe he thought he was hiding it well, but everyone could tell. Eventually, he broke, and left his family to pick up the pieces.
But this isn’t about him.
OR, Leo tries to commit suicide. He falls into a coma. This is the aftermath. Five days as told from his families perspective, and the one told from his.
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Something's different about the red clad turtle. In a good way! And said turtle has great siblings to help that change come into fruition.
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Leo goes through it in this I fear :(
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Blue ribbons in her hair by Cinnamon_toast_gay1
Fandoms: Teenage Mutant Ninja Turtles (TV 2012)
01 Oct 2025
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So yeah this is the fic I think the tags should entice you but if not maybe this cookie will 🍪🍪
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TMNT fanfiction or rewriting of t5 by Theultimatemultifandom_demon_01
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)
17 Sep 2025
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A Mikey centric fanfiction whit a lot of head canons and shit just because... I don't know, I wrote this while I was sleep deprived or in-between classes
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Candy Jars And Washing Machines by dahlia_de
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
15 Sep 2025
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Summary
And Raph loves his brothers.
Even if these stupid blockheads tell you that it is not true, then know that everything that comes out of the mouths of these rascals is an endless lie and provocation.or
Raph tries to be a good big brother, and Leo commits crimes.
All in all, an ordinary day in the sewers.