1 - 20 of 25 Works in Uncle Donatello (TMNT)
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Multiuniversal Chaos by JuniperNauta
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)
23 Sep 2025
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Summary
TMNT 2012 x ROTTMNT 2018
2017: The Foot Clan look for an unknow warrior, who can beat their asses, and the turtles are curious. Luckily, they meet him first, and he's a human from a different universe. He ruined the Foot Clan's Portalmachine, so he can't just go home. Meanwhile, a new guest arrives, also from that world. CJ and Leon are strange, but on a good way. However, Karai knows Leon from somewhere.
2021: CJ is missing and Leo was worrying until he found a way to him. Unfortunately for Don, his dumdum twin didn't explain anything, so now, he has two missing familymembers.
2012!Band doesn't know that CJ is Casey or Leon is Leos alternative version. Let's fun!
Series
- Part 1 of Multiuniversal Chaos AU
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Sunshine by MissInsomManiac
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (Bay Movies)
24 Mar 2025
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Summary
Jane is a single mother trying her best to provide a decent life for her daughter. She thought that she had everything figured out. A stable job, steady income, and a little ball of sunshine that made the stresses of life worth it.
But now Jane's peaceful life is suddenly ripped apart when a hit is put on her by the notorious Foot Clan. Worst part about it? She has no idea why they want her dead and has a giant, mutant turtle breathing down her neck like she's the enemy!
Join Jane and our favorite turtles as bonds are mended, relationships blossom, and secrets are revealed.
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Summary
It was only a prank. He found this weird collar, remembering that his uncle invented it and showed it to him. He thought it was fine. But then he just couldn’t take it off. It malfunctioned.
Series
- Part 18 of chilaglia ROTTMNT bthb 2025
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Silver Lining by Chilaglia
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
18 Mar 2025
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Summary
It’s his fault. His fault that the Krang found the Resistance base. His fault that all these innocent humans have been killed or Krangified. He’s got to fix this…even if it means opening that damn key to prison world…and sending Prime back.
Series
- Part 14 of chilaglia ROTTMNT bthb 2025
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History Repeats by Chilaglia
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
16 Mar 2025
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Summary
Matt has always been a lot like his father Leo. From his goofing around, his planning and strategic mind, from his terrible jokes that gets no laughs. But what is scary the most…is that history repeats itself even if it is in a different timeline. Matt has to try and get Nico back to normal…back to being Nico while his twin is controlled by Krang.
Series
- Part 13 of chilaglia ROTTMNT bthb 2025
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i will save you when your lights go out by phirrational for qolden
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types
11 Dec 2024
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Summary
“But isn’t it hard?” he asks. “You’re always so busy.”
Uncle Tello smiles—very small, very soft. “Your concern is kind. Junior, dear, these are my problems alone. I am here to fix things. It is enough to know I am doing my job; I’m the only who who can, you know that.”
He does. Uncle Tello is a genius, the most brilliant mind in the whole world. Of course, he thinks, watching his uncle return to making miracles. Of course, only Uncle Tello can do this.
or:
Donatello Hamato, from the perspective of Casey Jones Jr, in the aftermath of a canary’s continuity.
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The One Where Leo Becomes A Father by DiresNightmare
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
17 Oct 2024
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Summary
When Cassandra finds Leo during a brief lull in the ongoing war, she has a vital request.
Series
- Part 1 of Different Ending, Same Apocalypse
- Part 12 of TMNT-Tober Prompts
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'Cause You're a Sky Full of Stars (I'm Gonna Give You My Heart) by DiresNightmare
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
09 Oct 2024
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Summary
Title from "A Sky Full of Stars" by Coldplay.
Casey finds Donnie still awake one night, and the two get talking. Casey finds out how much Donnie hadn't changed, and Donnie learns things he never thought others would know.
AKA Casey Bonding with his favorite Uncle while Donnie realizes he loves his nephew.
Series
- Part 5 of Just Another Day in The World We Live
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Summary
Michelangelo frowns gently rocking his son holding him close, churring softly to help soothe his son. His little Kit starts to relax against him. The three older brothers all pause staring at their youngest brother.
“Holy shit..” Raphael breathes out in shock but still being quiet not wanting to startle the little guy or Michelangelo.
“Mikey?” Leonardo speaks, soft, he sounds calm but he isn't. But the leader will hide in his mind as he pleases for his brother's well-being.
Donatello is frozen, staring at their baby brother with a bundle in his arms. Because Michelangelo has never had a partner, let alone talked about.. that. Michelangelo always saw… baby making as a sacred thing that was held for a night of love and passion. Never a one night quick thing.
Series
- Part 2 of {Little Steps of Life}
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Baby Jones by Marantosai
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
10 Aug 2024
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Summary
Em uma missão com Leonardo, Casey jr acaba tocando em um artefato estranho que o transforma em um bebê.
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When A Ripple Becomes A Tidal Wave by Turtle_Collective
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
14 Jul 2024
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Summary
Title from the song "Just A Man" from Epic: The Musical(yes i love the youtube amvs of ROTTMNT with E:TM songs)
In an AU of the Bad Future Timeline, it's Leo who dies, not Donnie. After his twin's death, Donnie snaps, becoming as dark as everyone always jokes he would. In his grief, he decides that he needs to get Leo back and protect him, even if it means taking over the whole past world to destroy any threats to his brother. Michelangelo's time portal gives him this opportunity, and he travels to the past with his nephew Casey Jones Jr, intent on remaking the world in his image and getting his twin back, no matter the cost.
This one gets dark people! Like really dark! it's basically "what if Future!Donnie lost his twin and it caused him to snap and become a Supervillain"
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Uncle Murasaki by ECosmos
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles - All Media Types
21 May 2024
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Summary
Donatello was one second being dragged up into the Technodrone, body weak and pouring out blood as his hand weakly fumbles with his tech gauntlet. He had to wait for the right time, but he had them where he wanted. He had to do this. For them. For the future. For Junior. A flash of pink and purple clashed across his face. Closing his eyes he reopened them to the sight of a black dingy alley. Well he didn't think the afterlife would be fucking New York.
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So I've read fics where future Leonardo enters the 2012 universe but I decided to do Future Donatello instead. Let's see how this goes!
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Our Past is our Present and our Future by Trainer_Mimico
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types, rise of the teenage mutant ninja turtles movie
20 Apr 2024
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Summary
In this story Draxum finds the turtle in the sewers when they are kids. With the fear of being taken Mikey's mystic powers awaken and he send him and his brothers in the apocalypse future.
In this fic I head cannon that the turtles have childhood nicknames for each other.
Riri-Raph Age 5
Dee- Donnie Age 4 Oldest Twin
Lee- Leo Age 4 Youngest Twin
Mimi-Mikey Age 3
I love youngest twin Leo 🥰
This is just a silly idea that came to my head. Idk what I'm going to do with it or if I will continue. It doesn't really have a story yet, but who knows might work on it after I finish Blue Guard. This is no beta and first draft chapter. I welcome constructive criticism and any input on how I can make it better. As always I hope you enjoy :) -
Our Little Love by Maddie_10 for Crispy_Panda
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
18 Mar 2024
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Summary
After the invasion the Hamatos tried getting their lives back to normal. Leo went to work for Hueso once he was given the all clear. There he met his boyfriend, a rabbit yokai from Japan. Mikey worked on his new mystic abilities in the Hidden City. There he met his partners Renet(a cat yokai and time keeper in training) and Mondo(a gecko yokai with a love from all things human). Around the time Leo started working Donnie met Leatherhead. The gator was a royal guard for the princess of the Salamanderians. The two fell in love after constantly running into each other at the yokai markets in the Hidden City.
That left us with Raph. The Snapping had met the princess while tagging along with Donnie. It was love at first sight for these two. Princess Y'Gythgba went on about how she wanted to meet the ones who had managed to defeat the ones who eons ago had destroyed their once bright and lovely home. Raph being the heart of gold he was vowed to help her and her people.
And now, three years later the lovely couple were now newlywed. How will life treat these two love birds?
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Tales of Christmases Past by Strawbee9
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
26 Dec 2023
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Summary
Christmas has been around for much longer than anybody has been alive. The thing is, after a kraang apocalypse it gets pretty hard to participate in the holiday. But our survivors make do with what they have. Hope, faith, and the steadfast determination of a five year old.
Series
- Part 12 of Rose Gold
- Language:
- English
- Words:
- 1,128
- Chapters:
- 1/1
- Kudos:
- 8
- Hits:
- 132
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Uncle Donnie by Louisethebeaverwarrior
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
01 Dec 2023
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Summary
Some people -- and turtles -- are better at dealing with children than others. It has no bearing on how much those children are loved, just on how that love is shown.
Six year old Casey doesn't know that yet though. -
I Dont Want to Say Goodbye. by Hellofever
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), ROTTMNT - Fandom
23 Nov 2023
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Summary
Bunch of stuff and ideas for the future timeline, also some fan-lore + other stuff
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places in the heart you don't even know exist by mad_and_thick_as_thieves
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
23 Oct 2023
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Summary
Cassandra Jones kicks the mess hall door and screeches. “I have acquired a child!”
Cass was a mother, and Donnie was suddenly an uncle.
Or: Donatello Hamato, who only tolerates children, is saddled with his newly minted one-year-old nephew for a few hours. Surely nothing could go wrong.
Series
- Part 23 of ROTTMNT One Shots/Short Stories
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I’m sorry daddy by orphan_account
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
19 May 2023
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Summary
Casey is told not to come on the mission because Leo doesn’t know how dangerous it will be,
Casey wants to help and disobeys the order nearly getting them all killed.
Stressed out and tired leo lectures him on his disobedience,
Casey however doesn’t regret it because he believes he was in the right.
Leo ends up taking the harsh road of parenting and gives Casey a punishment he won’t forget,
But when he calms down he feels guilty about it wondering if he did the right thing, and Casey is just left in his guilt and shame. Donatello is there to help Leo through this, and Casey needs his daddy.Bad communication at the start
Comfort at the end.
Series
- Part 1 of Parent Leonardo
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The Mask He Wore by NovelistServant
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
25 Apr 2023
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Summary
One day, Casey’s precious Genius Tech built mask is cracked, and Donnie fixes it, uncovering that his future counterpart did, in fact, record everything.