5 terrapin siblings enter a world of adventure and danger when they make their first foray to the surface. [Revision of the original "Heroes in a Hard-Shell" fanfiction. And yes, Venus is their sister here.] [Had to repost]

AU. Leo can't get used to his new role within the Kingdom, and kinda sorta runs away. Purely by accident, of course. Sequel to The Servant, with immediate spoilers.

Sequel to Aftermath After the final battle where Pandora went to confront Hanako of the Foot Clan, she is missing in action. Despite her disapperance, her family and friends refuse to give up on finding her, dead or alive, yet where is she? And what drama will unfold in the search? Chapter 38 UP!

Inspired by the Star Trek: TNG episode 'Rascals' combined with the classic film Saturday Night Fever, Marzipan and Ichabod's hopes for winning a dance contest are dashed when they age regressed to eight year olds, so Donatello serches for a cure while his brothers continue to try to run the new Martial Arts School for Mutants Takes place before Rescue of the Mizzerans

*This is the long-awaited squeal to Please Eat* Mikey found it easy to understand those who are different from him, but found it hard to understand himself. But when his brothers gradate from high school, and he is left by himself. Mikey will have to learn to understand who he is before old habits take over. *Human AU*

Donnie's tragic mutation and abduction left a gaping hole in the Hamato family. Each member struggles with pain never meant to be carried alone. In the shadows, Donnie's abductors have sinister plans for him. Will the Hamatos find the strength to heal and stand together as they search for Donnie? Or will the burdens of their souls finally tear them apart? Book three in LotS series.

Mikey finds out he has a knack for therapy after he catches Donnie sneaking into the lair. 2k7 verse, two-shot.

Profiles of my original Mutant Characters who are either students or connected to Leonardo's Martial Arts School for Young Mutants. As a homage to the character profiles you could find in the 2003 TMNT DVD Extras

AU- Leonardo finds himself alone, robbed of his family, in a post-apocalyptic world where mutants inhabit a city of their own in the underbelly of New York. He seeks revenge but finds something he never knew he had instead; Brothers.

There were four of them that Leo could count. The rest, he thought, were in other pens but these were the most obvious from the window.

Serling thought he knew the turtles, but a panic attack during a vicious thunderstorm just may prove the robot wrong.

Mutopia welcome two new recruits to the village that Cam and Barry save from being murdered by a Mafia. As well as try and settle into their new lives as mutants, the newcomers also plot to get vengence on the ones who stole their lives! CHAPTER 30 UP!

Set after 'Slash and Destroy.' Slash is out for revenge against Raphael for betraying him and he has decided the best way to hurt the turtle in red is through his brothers. Slash has his eyes set on one brother in particular and he will stop at nothing to even the score. **2017 TMNT Universal Reader's Choice Awards Winner**

It was a cold morning in the city, and the turtle found himself alone in the dojo. The early light filtered through the windows, casting a serene glow across the tatami mats. The turtle had always been the carefree, easygoing brother, but today was different. He was determined to push himself further, to embrace the relentless discipline and obedience that his brother exemplified.

A collection of short stories for Whumptober 2024. Warning: Angst ahead.

Set in the 2003 series. Donnie's sick with the flu, the guys are out monster hunting, and Mikey's psionic powers are causing him problems. Now with Donnie being mutated by the Outbreak how will this effect the orange clad turtle. For Brightlotusmoon. Brotherly fluff at first, then something more later.

Luego de la muerte de su padre y al descubrir lo mucho que esto afectó al mayor, Mikey decide obsequiarle a Leonardo un conejo blanco en un intento por subirle el ánimo. El plan resulta un éxito hasta que un día y por un descuido, la pequeña mascota cae en uno de los contenedores de mutágeno cambiando la situación de la familia y de Leo para siempre.

Crossover with Punch-Out and based on The Palladium TMNT RPG when the Ninja Tribunal gives Leo a message he must send his best students to the castle of the Mysterious White Ronin in a deadly game of death, the Turtles, the Students and the Boxers are put to the ultimate test this story is an examination of Eastern Shame-Based Culture VS Western Guilt Based Culture

A retelling of the 2003 show with the addition of an OC named Alexander, the human brother to the Turtles.

Leo woke slowly, the drugs in his system feeling thick and heavy, taking twice the effort to open his eyes. He blinked at the harsh lights above his head, searing into his retinas. So that's what woke him up. No confusion, no disorientation. Leo hadn't experienced that in months. He knew exactly where he was...

Raph should have known better than to follow him. And now, he was trapped under fallen debris, pinned down with heavy slabs of concrete and brick. They pressed down hard on his shell, heavy and unforgiving, leaving him breathless. He was trapped. Leo was standing only a few feet away from him. But Raph had never felt less safe...

While out grabbing food, Mikey and Casey have a quick run-in with the Foot ninja. However, when a new, mysterious figure joins the party, how will Mikey explain to Leo that he and Casey got into a fight after he promised not to? Especially when that mysterious figure had this shiny orb that decided to make a new home inside of Mikey's chest! Can't a turtle catch a break here?

Something just isn't right. But, for some reason, Splinter just can't place his finger on it. One minute he was sleeping peacefully and the next? His heart is racing and he's... Wait... Where in the world is his youngest son? Michelangelo? Splinter's getting too old for these types of scares!

A Rewrite of Next Mutation

Drabble series that puts Leonardo through the biggest trials of his life, changing him and his family as they struggle to navigate each new challenge. But as their adventures grow more and more deadly, will the family survive? COMPLETE