1 - 20 of 287 Works in Leonardo Has Issues (TMNT)
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What Science Allowed This? by NexusEvent_Twig
Fandoms: Big Hero 6 (2014), Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
24 Jun 2025
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Summary
'Hiro was looking for a student, specifically his absent roommate. It's not like it was a big deal that they didn't show up for the program's orientation, but his vigilante senses kept telling him something wasn't right.'
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Or, Donnie Blasts himself into San Fransokyo and promptly joins the nearest school for tech nerds, Hiro decides to move onto the campus dorms and joins an Internship program to help his aunt pay her sudden debt and save the Lucky Cat Cafe.
But things would be a lot easier without two purple maniacs wreaking havoc in the city... -
The lights in your eyes fade and life flashes by by NerdyBoiYeet
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
22 Jun 2025
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Summary
Leo is ready to be done. To end it all.
The tensions in his family are at an all time high, everything ruined by his father declaring him leader.
With everyone turning their backs on him, and telling him to leave. So he's going to give them what they want.
He's going to set everything right and do it.
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Where You Belong Arch 1: Can Nobody Hear Me? by Shattered_ontheInside
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012)
21 Jun 2025
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Summary
How does it feel to be so very alone and so very forgotten?
Why do you enjoy tormenting me?
I will answer your question if you first answer mine.
Leave me alone.
Answer the question, Leo.
No. Leave me alone. Allow me a shred of peace for once.
Answer. The. Question.
I don’t want to.
You don’t have a choice.
I never have a choice.
Answer me.
I won’t lose control of my own mind!
Leee-ooo. Answer the quessss-tion.
Why?
Answer. Me.
I don’t want to.
How does it make you feel, Leonardo?
. . .
Despair.
Is that your answer?
. . .
Yes.
Good.
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After being hit with a mystic attack that removes Leo's ability to communicate one unexpected turn after another takes his life on a downward spiral that rips him away from his family; seems to have no end; time and time again puts him face-to-face with the reality that where he is told he belongs is not where he wants to be...
and that makes him struggle with the answers to two important questions:
Can a hero be turned into a monster?
And does a murderer deserve forgiveness?
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Back from The Edge by SmidvargAndTheGang80082
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
21 Jun 2025
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After the Krang invasion, Leonardo is left scarred and reserved, a shell of his former self. He tries desperately to keep his confident front alive, but can he even handle that?
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The Last Of The Real Ones by Breech_Loader
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
19 Jun 2025
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In this Scattered AU, in Baron Draxum's lab accident the Turtles were scattered around the whole world. Master Splinter only managed to save Leonardo - so he never found out about his brothers. But when Leonardo's 18, Master Splinter dies in a strange fire. With nothing but questions and his katana, Leonardo leaves New York to see the world his father's always promised to show him.
Now Mutants and Yokai walk beside Humans, but there's organisations that wish they didn't. Mutagen isn't just a toxin, it's a commodity to be traded - if only anybody had a clean sample. And everybody wants a piece of the Empyrean market... if only they could mine its worldwide Ley Lines. April's got her journalism career started, but where's her story? Oh, and Casey Jones Jr still has his mission - but it seems he's in the wrong world!
But Donatello, Michelangelo and Raphael are not sitting around waiting for Leonardo to find them. Fate has sent them on their own journeys. Destiny means they'll meet - if they make the right choices.
- Language:
- English
- Words:
- 3,450
- Chapters:
- 1/?
- Kudos:
- 1
- Hits:
- 21
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The Art of Trust by Madeofchocolate
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
18 Jun 2025
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Casey isn’t with the foot anymore, but Leo’s not the trusting type. His family isn’t too happy with his attempted intimidation, and Casey doesn’t know what to think.
Alternatively, five times Leo gets lectured about trust and one time he doesn’t need to be.
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ROTTMNT oneshots! :D by LikableMuffin
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
16 Jun 2025
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All my ROTTMNT oneshots! There's lots of different stuff in here, hopefully theres something for everyone! :D
Lots of these are also requested stories! Feel free to request me if you want! (Just no T-cest or adult content, please.)(Transferred here from Quotev)
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Trials of a Young Heart by theasternaut
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012), Usagi Yojimbo, Samurai Rabbit: The Usagi Chronicles (Cartoon)
08 Jun 2025
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Summary
Leo is fine. Despite what his brother’s might tell you, he’s doing great. Sure, he hasn’t quite been himself since Splinter’s death, but he’s adjusting and his brother’s silly little intervention wasn’t going to change that. He tried to tell them as much before the dart pierced his skin and everything went black.
He now finds himself half-way across the world in Japan at the mercy of his unknown assailants. Just as he’s about to give up all hope, he’s saved by a band of Yokai Samurai led by a rather nice white rabbit. He’s not sure how he’ll ever get home, but he trusts Yuichi Usagi to get him there.
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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)
07 Jun 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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The Journal of Hamato Leonardo (3) by Slady
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2012)
06 Jun 2025
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Summary
2012 “Teenage Mutant Ninja Turtles”
Daily updates for each episode of Season Three from the perspective of the turtle team leader Leonardo.
Series
- Part 3 of 2012 The Journal of Hamato Leonardo
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The Light Upon My Face by lil_lavender3
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types
04 Jun 2025
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Something was…off.
Leo’s demeanor felt different than usual. He was being less coordinated, but more than anything…he was happier. Although he put on a serious face and trained in the dojo for longer than he should’ve been earlier, here Leo was giggling and smiling like he was on pain meds again. Did he have rat flu or something?
Or,
Leo wakes Raph up in the middle of the night, but he’s acting strangely. Can Raph figure out how to help his brother, or will Leo continue to suffer in silence? (And, will a few bad habits of his come to light in the process?) -
The moods surrounding blue by Averie_sol
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
02 Jun 2025
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Summary
leo has these... mood swings? is that what you'd call it? coping mechanisms dont work, he lashes out. He manipulates to get what he wants he needs- no craves control. He loves his brothers with everything in him but theres so much comfort in feeling out of your mind.
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OR leo thinks hes some horrible manipulative fuck up in this fan fic of i take some of my personal experiences, wildly let it take a turn, spin it so leo mayhaps has BPD, totally has PTSD, depression anxiety, etcetera etcetera (because theres totally a universe where hes borderline) and let the angst begin because he has seventy thousand different mental issues ;)
THERE IS TRIGGERING CONTENT. PLEASE READ AT YOUR OWN RISK <3
Series
- Part 1 of Rise Leonardo-centric
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Rise TMNT: All My Doubts by IzzyDaNinja
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types
30 May 2025
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Summary
“You really did it!” Raph praises and Leo’s chewing slows as Raph sits beside him. “I’m proud of you.”
It’s only then that Raph actually looks in his direction, and the soft, prideful smile immediately drops off.
“Are you.. Crying?”
Series
- Part 5 of Rise TMNT - One Shots
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Mama's heir by Anonymous
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
30 May 2025
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Summary
Leo isn't jealous... Of course he isn't! So what if he doesn't click with dad and Draxum, that just means he's just different than the rest of his family, he's one of a kind!
Leo, the one and only Leo! He's one of a kind in this family! That's right, he doesn't need a parent that understands him cause that would take away the uniqueness he possess!
Or
Leo gets a mom and now he's rich
Sorry, I'm bad at summaries
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Journaling is Cheaper then Therapy by Conartist170
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
30 May 2025
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Summary
Mikey gave Leo a journal, wanting him to use it. How? It was all up to Leo apparently.
Eh.
He'll give it a shot.
Or; Leo starts to journal and it learns more about Leo then anyone else has. Maybe even more then Leo himself.
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In a Cell by Firefly026
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
30 May 2025
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Summary
Leo wakes up, and so does Draxum.
Series
- Part 10 of Villain Donnie AU
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In-turtle Dimensional chaos by LexiCon
Fandoms: Teenage Mutant Ninja Turtles - All Media Types, Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (TV 2012), Teenage Mutant Ninja Turtles (TV 2003), TMNT (2007)
23 May 2025
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Summary
After the events of Turtles Forever, Donatello, of the 2003 dimension, creates a special server to connect with other dimensions. It goes about as well as you'd expect...
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Runaway bad guy, this is your retribution by Leo_Angst
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles (IDW Comics), Teenage Mutant Ninja Turtles - All Media Types
21 May 2025
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Summary
He thought he could handle it. Thought he could push through his problems with a smile in place.
But he can't. He's not strong enough for it.
He's defiantly not strong enough to keep seeing the look of hurt on his family's faces. A look he, himself put there with just his mare existence. He should leave, it'll be easier for everyone involved.
He's easily replaceable anyway.
Or
Leo runs away when his problems get too much for him.
Story about recovery and trying to see the light when you're at rock bottom
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The Shadow Assassin by NerdyBoiYeet
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018)
14 May 2025
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Summary
Separated Leo Comic. Leo was raised by Big Mama and Draxum to be a ruthless and effective assassin.
When his 'family' enters his life, things begin to change.
Will it be for better or for worse?
Series
- Part 1 of Nerdy's Art and Comics!! :)
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Operation: Undercover by Celestial_Ghost
Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types, Samurai Rabbit: The Usagi Chronicles (Cartoon)
13 May 2025
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Summary
The rabbit seemed to snap back into focus, eyes back onto Leo’s. “Sorry, I'm bad with long speeches. Could you summarize for me?”
Leo squeezed his snout between his fingers, exasperated. “I need to see you again in a couple days.”
“Like a date?”
“Yes, like a–” Leo looked up frantically, blush spreading across his cheeks. “No, not like that! I'm worried about the severity of your injury!” He looked away again. “Look, is there somewhere we can meet so I can make sure you won't die from this?!”
“Wait what's your name?”
AKA Leo goes undercover as a battle nexus medic to try to uncover one of Big Mama's plots, but ends up treating a cute rabbit yokai instead
Series
- Part 1 of Operation Undercover