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Tantei Ao by lunarleonardo
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
05 Feb 2026
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Summary
One restless night, Leo's curiosities about Draxum's words leads him out of the lair. It's nothing special; a thin file, forgotten on a shelf and collecting dust.
One restless day, as Leo cleans his room, he finds that very file. The invasion is over, all the major threats have been defeated... Leo can finally kick back, relax, and take on some leisurely hobbies.
Leo never expected it to come to this. This role he'd taken on.
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tldr: Leo's late-night outing accidentally leads him to taking on a second undercover identity. Maybe not the healthiest way of coping with the invasion, Leo.Bookmarked by a_simple_gremlin
11 Jan 2026
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Light in the Darkness by EchoKazul
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles (TV 2003)
08 Jan 2023
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Summary
Leo finds himself facing questions he had hoped never to face.
Can one ninja while blind?
Will he still be able to lead his brothers?
Will they still want him to?
And, most importantly, will he even ever find them again?
- Language:
- English
- Words:
- 113,891
- Chapters:
- 25/25
- Collections:
- 2
- Comments:
- 628
- Kudos:
- 2,032
- Bookmarks:
- 598
- Hits:
- 56,852
Bookmarked by a_simple_gremlin
20 Nov 2025
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Toxic Tonics by Quarantinevibes
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
22 Oct 2025
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Summary
Leo would appreciate it if his brothers informed him when they managed to anger entire towns.
When a run in with Donnie’s growing list of enemies from witch town leaves him and Leo to deal with a nasty spell, the after effects have Leo reeling. He’s determined to play things cool and brush it off, despite his brothers’ growing suspicions at his changing behavior. He’s the leader, after all, he should be able to handle it!
OR
Eight chapters of Leo not handling it.
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Complete!Bookmarked by a_simple_gremlin
11 Nov 2025
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Translate the Problem by Professor_Anxietree
Fandoms: Teenage Mutant Ninja Turtles (TV 2012)
02 Apr 2021
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Summary
Mikey told them he was in Dimension X for a few months at most. He said everything was fine. He lied. In the days leading up to the invasion, the rest of the team become more and more convinced their brother is hiding something from them. When they find out just how much Mikey has been through and how he's changed, they must fight through years of doubt and pain to help him.
Series
- Part 1 of Coded Solutions
- Language:
- English
- Words:
- 24,031
- Chapters:
- 1/1
- Collections:
- 2
- Comments:
- 67
- Kudos:
- 1,778
- Bookmarks:
- 360
- Hits:
- 27,315
Bookmarked by a_simple_gremlin
08 Oct 2025
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The Greatest Thing We've Lost by SupremeCommanderOfPencils
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
17 Aug 2025
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Summary
Leo waited. His leg was growing painfully numb under the ice. He wanted to rip the pack off and heave it across the room where it could shatter on the floor. Instead, he forced himself to stay quiet as he watched everyone disperse on their assignments, feeling his heartbeat inexplicably rise in his chest until he finally couldn’t stand it anymore.
“And me?” Leo looked to Splinter. “I know portaling is kinda off the table right now, but, you know, plans are still kinda my thing. Just give me a minute—an hour max—and I know I can come up with a place for us to stay...” Leo’s voice faded as Splinter placed a warm pink hand on top of his own, making it lay still.
“Do not worry, my baby blue.” He said, giving the back of his hand a pat, a soft smile reaching his furry face. “I know exactly where we will go.”
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Leo knew losing an arm would be a hard change. He just didn’t know exactly how many changes he'd have to deal with. Turns out that narrowly avoiding the Krang apocalypse doesn't mean everything goes back to normal.
(Or my traumatized turtle boys spend some time recovering in the countryside because the author was listening to Noah Kahan’s Stick Season album A LOT)
Series
- Part 1 of We'll All Be Here Forever
- Language:
- English
- Words:
- 59,746
- Chapters:
- 10/10
- Comments:
- 279
- Kudos:
- 635
- Bookmarks:
- 210
- Hits:
- 13,036
Bookmarked by a_simple_gremlin
31 Aug 2025
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The Crescent’s Ascent by Abbie_Lauren2024
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types
22 Aug 2025
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Summary
When Big Mama poisons Leo and causes him to lose his memory, chaos ensues as she strives to convince him that she is his mother. What started out as an attempt at a new Nexus champion quickly spirals into an unhealthy obsession, and Big Mama will do anything to make sure her precious Crescent never even wants to leave.
Meanwhile the brothers search frantically for their leader in blue, but will they be too late? Will they be able to find Leo and restore his memory before he is too far gone? After all, there are already things Leo has been hiding…
Series
- Part 1 of The Crescent’s Ascent
- Language:
- English
- Words:
- 170,470
- Chapters:
- 74/74
- Comments:
- 1,734
- Kudos:
- 520
- Bookmarks:
- 82
- Hits:
- 17,604
Bookmarked by a_simple_gremlin
24 Aug 2025
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Puppet Tightly Strung by clairakitty
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)
31 Dec 2023
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Summary
“In fact, I bet you like doing what he tells you to do.” Their weapons clashed and Leo leaned forward, beak-to-beak with his brother. “You probably love it.”
Raph’s breaths came harsh and ragged, the snarl on his face making him look more like the impulsive, emotional brother Leo knew. For the first time since the turtles broke into Shredder’s lair and laid eyes on him, he looked like Raph again. Leo could feel the way his brother’s arms quivered through his grip on his katanas, and he fought to hide the optimism-relief on his face behind a cocky raise of an eye ridge.
Then Donnie cried out behind him, followed by a crash, and it all fell apart again.
AKA I thought the "mind-controlled Raph" concept in Clash of the Mutanimals was CRIMINALLY underutilized and should've lasted at LEAST a few episodes.
Series
- Part 1 of Puppet Tightly Strung+
- Part 1 of PTS - Main Canon
- Language:
- English
- Words:
- 60,028
- Chapters:
- 17/17
- Comments:
- 649
- Kudos:
- 947
- Bookmarks:
- 164
- Hits:
- 20,251
Bookmarked by a_simple_gremlin
23 May 2025
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Tags
Summary
Roxanne attends 'Lil Gifted School.
Series
- Part 1 of Safe If We Stand Close Together
- Language:
- English
- Words:
- 19,685
- Chapters:
- 7/7
- Collections:
- 5
- Comments:
- 258
- Kudos:
- 3,228
- Bookmarks:
- 451
- Hits:
- 24,123
Bookmarked by a_simple_gremlin
02 May 2025
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Welcome to the Circus by Shattered_ontheInside
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
11 Apr 2025
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Summary
The slider managed to open his eyes halfway to look down on his left hand to try and find out what it was stuck to, but the darkness all around combined with the concussion-induced blurry, doubled vision did little to help him understand anything he was looking at.
Then there was a voice.
Not the comforting voice of one of his concerned brothers, but rather a gruff, deep man's voice coming from the stranger tending to his laceration.
"Sorry 'bout the cuffs but I ain't never seen your kind before."
-or-
On the day of the invasion Leo's brothers try to save him from the prison dimension but a disruption caused by Krang Prime causes Mikey's portal to mystically explode, knocking Leo unconscious.
The next thing he knows he wakes up injured with a concussion in a dark room with a stranger tending to his wounds.
But he is soon to find out that this scruffy human does not have his best interests at heart.
If he can't escape on his own will his family come to the rescue, or do they even know where he is?
No matter what happens Leo knows that he always has a ninja's greatest weapon: Hope.
. . .
Right?
Bookmarked by a_simple_gremlin
12 Apr 2025
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hollow mind by paperxcrowns
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
26 Feb 2023
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Summary
Months after the Krang invasion, everyone is healing and everything seems to be going well. Until Leo goes missing and has to find a way home while injured, weaponless, and pursued by his kidnappers.
It doesn't help that he has no idea how he ended up here.
- Language:
- English
- Words:
- 23,681
- Chapters:
- 3/3
- Collections:
- 4
- Comments:
- 130
- Kudos:
- 1,680
- Bookmarks:
- 473
- Hits:
- 23,797
Bookmarked by a_simple_gremlin
11 Apr 2025
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The Medic by SupremeCommanderOfPencils
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
25 Nov 2024
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Summary
Raph's the strong one. Donnie's the smart one. Mikey's the creative one. And Leo's...still struggling to find his place in the family.
- Language:
- English
- Words:
- 35,732
- Chapters:
- 10/10
- Collections:
- 1
- Comments:
- 200
- Kudos:
- 778
- Bookmarks:
- 133
- Hits:
- 11,038
Bookmarked by a_simple_gremlin
31 Mar 2025
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Summary
The whole day, Leo'd been having trouble getting his sword to work. Which, whatever, not the end of the world. They'd gone their whole lives up til now without magic powers, and Donnie didn't have any either. It was funny to tease Leo about his tiny portals, but at the end of the day, if he couldn't get ‘em working properly, it’d be fine.
But he's starting to think that maybe Leo had seen it differently.
(Written for Bad Things Happen Bingo: Insecurity)
Series
- Part 3 of Bad Things Happen Bingo
Bookmarked by a_simple_gremlin
08 Mar 2025
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Quietly Waiting by Cass_Phoenix
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types
06 Jan 2025
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Summary
Leo waits outside of Raph's room. The door's always been open to Mikey and Donnie, but would it be open for him, too?
Bookmarked by a_simple_gremlin
20 Feb 2025
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raised on little light by taizi for GibbousLunation, Soldraws
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
10 Dec 2024
Tags
Summary
“Who are you?” Leo asks stupidly.
“Gio,” the probably imaginary turtle replies.
Leo’s mouth runs off before he can stop it. “Just Gio? Like Cher?”
God, he thinks. That was stupid, Leo. Not the time or place, Leo. You’re in the prison dimension. You’re dying here and you can’t even cut the jokes now? Raph was so right about you.
But the imaginary turtle surprises him by smiling slightly, the corners of his mouth pulling just barely upwards in a way that somehow completely transforms him. Not the time or place for jokes or smiling at them but here they are. Like company.
Or: a long-lost brother takes the long way home.
Series
- Part 1 of the archer
Bookmarked by a_simple_gremlin
10 Dec 2024
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Two for the Price of One by GriffinStone
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types
11 Mar 2024
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Summary
Leo trusts Raph.
Of course he does. He'd be stupid not to.
But it's been months since Splinter chose Leo to be leader, so it's up to Leo to make the decisions on missions now. So he does, gradually calling on his brothers less and less as more and more missions go wrong and it's up to Leo to fix them.
Like today's mission, retrieving a creepy totem thing that Leo doesn't know the purpose of or why the bad guys want it. And when the mission goes predictably sideways, he prepares to portal the totem to himself, even if Raph is going after it already.
Until Donnie starts screaming from some kind of invisible attack that Leo can't see, but can gradually feel from his twin. Focused on Donnie, Leo doesn't think about the totem.
Not until Casey Jones shows up.
Casey Jones, who's come back in time with more than just a picture and vague directions.
Series
- Part 2 of Telepathic Twins
Bookmarked by a_simple_gremlin
10 Nov 2024
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Freezerburn by ashtreelane
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
23 Sep 2022
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Summary
A cool fun fact about box turtles is that they are one of the most freeze-resistant animals alive. See, when they get too cold, their bodies have this amazing defense mechanism that diverts their blood to their core to keep them alive. Super unfortunate for the Hamato family’s blood pressure, because in severely cold environments a box turtle’s heart will actually stop beating. Fascinating right?
It would be soooo fascinating, in Leo’s humble opinion, if they had known about it before finding Mikey dead on the floor of a freezer.or, box turtles can literally have 80 percent of their bodily fluids frozen and LIVE. what the fuck.
- Language:
- English
- Words:
- 8,225
- Chapters:
- 2/2
- Collections:
- 1
- Comments:
- 201
- Kudos:
- 3,536
- Bookmarks:
- 712
- Hits:
- 26,772
Bookmarked by a_simple_gremlin
28 Oct 2024
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.Dead asleeP. by PhoebePheebsPhibs
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
30 Sep 2024
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Summary
Leonardo's life is perfect and peaceful.
So something must be wrong.
When he wakes up during a sleepover to find everyone vanished, he slowly begins to realize that the world he is in isn't real, and he has to wake up for real and find his actual family.
- Language:
- English
- Words:
- 24,530
- Chapters:
- 6/6
- Collections:
- 2
- Comments:
- 52
- Kudos:
- 173
- Bookmarks:
- 47
- Hits:
- 2,665
Bookmarked by a_simple_gremlin
30 Sep 2024
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Port in a Storm by Dandy for DeerPrinx
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
12 Sep 2024
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Summary
These kids will be the death of him. This, Draxum knows with certainty.
- Language:
- English
- Words:
- 2,434
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 37
- Kudos:
- 432
- Bookmarks:
- 73
- Hits:
- 2,311
Bookmarked by a_simple_gremlin
12 Sep 2024
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you can have three wishes if you don't take too long (if you don't take too long) by mad_and_thick_as_thieves
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Sonic the Hedgehog (Video Games)
18 Nov 2024
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Summary
Leo and Donnie stumble across an old, glowing copy of The Arabian Nights in Draxum's library, and because they can't have one uneventful weekend, they're pulled into a world of magic rings and vengeful genies. With the book rapidly fading, it's a race against time to beat the Big Bad and save the world before they fade with it.
Just another crazy adventure. Right?
Or: I have no impulse control, I love the Twins, I love this game, someone tranq me.
Bookmarked by a_simple_gremlin
10 Sep 2024
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a bigger heart grew back by taizi for GibbousLunation
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
09 Aug 2024
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Summary
“It has been a long time since a sick little turtle has called for me,” Splinter murmured, stroking Blue’s forehead around the bandages. “Normally you are all ready to fight each other to the death to monopolize Red’s attention.”
It was only partly a joke. Leonardo gazed up at him, eyes glassy. It was hard to gauge how much of their conversation was sticking the landing and how much was somersaulting straight over his sluggish head.
Then Leonardo said, “He hates me.”
“Pardon?” Splinter said stupidly.
His son blinked, and finally fat tears rolled down his cheeks, soaking into bandages on one side, unchecked on the other.
“He hates me,” Blue insisted. “He’s right. It was my fault.”
Bookmarked by a_simple_gremlin
09 Aug 2024