Vanessa Black has transformed from a human girl to a giant Black Widow! The Turtles shelter her but Vanessa has to deal with Raph's hatred of bugs. all the while trying to solve the mystery of this new Mutagen while others are also seeking to harness the new Mutagen for their own purposes

Hamato Yoshi is forever changed when he loses a son so soon after his wife and daughter. Life in the lair is far from idyllic as a father's desire to shelter his sons causes friction and rebellion. But as they are bound to him, their lost brother remains bound to others, the life he'd lost kept hidden from him. Fate tore them apart, but now it seeks to bring them together once more

Mikey died. He expected to be reunited with his brothers and sensei once again. He wasn't expecting to travel in time back when his family is very much alive. With this second chance given Michelangelo promised to protect his family like his family did for him in his own timeline, watch out world he was going to change some things around. (TMNT 2012)

What if Donatello had a completely different backstory? One which lead him to despise Hamato Yoshi, and look up to Oroku Saki. But this version of Donnie is going to be in for a rude awakening when he meets Yoshi's Disciples and their messed up alien infested world. Human Donnie AU. 2k12 Verse

While helping her new friends escape a mob of raging New Yorkers, April sees a gentler side to three of the Turtles (2023 movie, oneshot; neurodivergent Mikey; family feels)

One year later, after the Krang’s invasion, the turtles are now stronger as a team. But now, the turtles are faced with a new challenge, four new mutated turtle girls. With them training with them as the new kunoichi and living their new life, they find themselves falling for them.

Kemeko, the late Karai's daughter, and Leonardo's adopted daughter turns 13 years old, and the blue masked turtle believes she's at the age not only to join him in the field, but to know the truth of her origins with the Foot and the Shredder. What will all this lead to? CHAP 4 UP!

The Hamato Clan and their guests from Mutopia go to a Music Concert and leave a teenage Pandora and pre-teens Kemeko, Freya and Loki home alone in the New York lair. Left without adult supervison, what mischief will they get up to? CHAP 3 UP!

Drabble series about the problems that come with being Leo. Primarily 2003 universe but will incorporate elements of the comics. Will have angst and Leo!whump. Chapter 13; Leo is held captive by a creature with no way to escape, and his time is quickly running out!

After defeating the Shredder, the Turtles head back home to heal from their injures. Once they do, they begin to face more challenges, including Leo going through PTSD, a stronger Purple Dragon gang, a fake alien invasion, a vengeful Karai, and a Mutant Outbreak all over the city, which mutates all sorts of life.

Y/N FEMALE X DONNIE (WARNING: THIS IS A LOVE STORY AND WILL HAVE EXPLICIT MOMENTS) (Chapter 1 has hints of SA, if you are uncomfortable with that then please skip this chapter) Y/N lives alone and has a pretty normal life until she crosses paths with Donatello. They realized eventually that things happen for a reason and that they need each other more than they realized.

Part of the Neozoic Tales, the Turtles help the Fellowship Crew with their plan to bring down the Wrangler Planet of Viola Strierra and liberate all the Humanimals enslaved there, but certain Humanimals having their hearts been hardened don't want reconciliation with humans but revenge

"And I can't stand the fact that he's hot too!" Both brothers froze at that. Did Leo just- no… he didn't. Leo didn't call anyone hot. Maybe beautiful, or amazing- but hot? Oh no, who was this turtle and what had he done with his eloquent brother? Donnie barely held back his laughter. To think- that Casey did this to him. Unbelievable.

Leo dutifully ignored Casey. They were driving alone in the middle of a freezing night down some god-forsaken backroad, and Casey was probably out of his mind right now. The cold must have frozen his brain cells and this is what he was left with. But geez- he can't just randomly blurt out something like that. Not to Leo- not to anyone. What was he thinking? Rated for Language

When Leonardo is abducted, his family is left without a clue as to who has taken him or where he might be. Tested in body and spirit, chances for Leo's survival look bleak. But the turtles have made friends and allies over the years, and help comes from an unexpected source, giving them the chance to try and rescue their brother before it's too late.

Raph flicked off the TV, chugged the last of his water, and then turned to head back to the training area. Until something caught his ear. Raph paused, listening again. It was coming from Donnie's room. It sounded like Donnie. It was… he had to listen for it again… it sounded like a cry. Day 28 of Febuwhump 2023

Due to his father's secret about his origin, Donatello's life seems to take an unexpected turn as he finds himself being targeted by the Shredder himself.

Don stared up at the sky, holding the drawing in his hand. He wondered how different the sky Kirby was looking at was. Day 27 of Febuwhump 2023

He was tired, he was cranky, and he was paired with a smug Raphael for morning training. After a long night of exposure to some of the internet's more colorful language, sometimes even a young Donatello's brain can't properly filter words before they leave his mouth. (Rated T for language.)

April O'Neil refuses to believe that the guys are dead, despite what Karai told her. But after a month with no information, contact, or news, she can't help but wonder what if Karai was right, and what if April assumed the were dead? Day 25 of Febuwhump 2023

At the farmhouse, April soaks the clothes she wore when everything happened—the ones with Leo's blood on them—and reflects. Day 24 of Febuwhump 2023

Don is down and Raph is the only things standing between him and about fifteen Foot Ninja. Unfortunately for the Foot, Raph is a protector by nature, and his protectiveness has just been dialed all the way up. Day 23 of Febuwhump 2023

Valentine's Day special. Mikey and Kate celebrate their first Valentine's Day as a couple together. Things may not unfold the way the orange-masked turtle expects, though. Rated M for safety's sake, it might get steamy. Completed!

Now that the world is saved from the Kraang invasion, the turtles face another foe: Agent John Bishop. For over a year, the Turtles, other mutants, and Yokai find themselves in a cat-and-mouse game with Bishop and his agents. But things get worse when Bishop and his team are accidentally involved with opening the gate to the Prison Dimension.

Donatello is hunted down by a old enemy they thought was beaten. But their sick game is to continue. Meanwhile Splinter is falling into darkness from the same returning foe. Who is this one tormenting them? and can the brothers save them both in time? (Collab with Glazier Blue)