In a battle, Sonic the Hedgehog destroys Doctor Eggman's Energy Amplifier, powered by the seven Chaos Emeralds. This causes an explosion, a result of a phenomenon known as Chaos Control, which sends Sonic, Eggman and his fortress, Miles "Tails" Prower and the biplane he flies, the Tornado 2 (Tornado), Knuckles the Echidna, Amy Rose, Cream the Rabbit and her pet Chao Cheese, and Rouge the Bat to a new and strange world called Earth. Here, they'll meet new friends and enemies while also trying to live on this planet until they get back home. Sonic belongs to SEGA and TMNT belongs to Viacom and Nickelodeon.

Master Splinter found a young baby in the sewers when the guys had just been mutated and are still babies. She is trained into a ninja just like the guys. They all see her as their sister except Leo he sees her as his best friend. Could they ever be more? Ps: Elsa is not the main character Carli is she just looks like Elsa The chapters are different to the TV show eg Meeting Casey and April

This story tells a tale of the turtles, except now they have little sisters cheering them on, however Splinter did not know where did the girls come from, he figured they were orphans since they were human, but he was wrong, the girls learn about they're true idenities, they and they're brothers have a lot of fun adventures, sad, happy, confusing, most important they face everything together! ❗Please read story warnings bellow❗ Season 1- ✔ Season 2- ✔ Season 3- ✅ Season 4- Season 5- Season 6- (Yes I am writing my own season, season 5 will end diffrently) In progress-✅ Complete-✔ There will be a lot of unexpected ships, like with the sister, all original ships stay. ❗AND I PROMISE LEORAI WILL HAPPEN❗ Warnings: 1. This story contains mental health disorders, I try my best to be as accurate as possible *IF I GET SOMETING WRONG PLEASE MESSAGE ME* 😕 2. This story contains gore and dark (Meaning: plots which introduce elements such as death, violence, betrayal or loss.) *But don't worry there is a light at the end of the tunnel!* 🌃🌟🌚 3. This story could potentiolly contain smut 🙈 4. Curse words could be used ( I tend to avoid using them, but when crap get's real bad, I tend to go all out) 💩🤳 5. Contains many grammer mistakes. (I tried to fix them as best as I can, but I usally miss a lot) I do tend to read my story parts a lot so I'm sure grammer mistakes will dissapear bit by bit. 😖 ❗At the end of each season I will be talking about the next one and giving out warnings.❗ Until then, enjoy the story, peace out my shellheads!♡✌🤞

Months have passed since the Turtles have defeated their arch nemesis Shredder and all is well in New York City. However though, things are not as peaceful as the Turtles could hope for. One night while out on patrol a mysterious vortex portal is activated sending the four brothers into another world full of Mobians who struggle to keep Dr. Eggman at bay but luck is on their side once all of Team Sonic including Sonic himself discover the Turtles. Join the Turtles Leonardo, Raphael, Donatello and Michelangelo in their battles side by side with the Mobian heroes Sonic the hedgehog, Amy Rose, Tails the fox, Sticks the badger and Knuckles The echidna as they face the evil Dr. Eggman every day in order to keep the world safe from harm while also even, in some cases, dealing with Metal Sonic the Badnik and Shadow the Ultimate Lifeform and prepare for awesome teamwork between the beloved heroes from two different worlds! Note: This takes place after the TMNT 2012 show and during Sonic Boom, I don't know much about TMNT honestly so forgive me if I get the Turtles' personalities wrong and if you don't like Sonic Boom you don't have to read it, this story is towards people who do like Sonic Boom but I won't make it stupid like how a lot of people thinks it is in this story so please give it a chance. And one thing is that updates might be slow so I apologize if it takes a little while for a new chapter to come out. Enjoy! :) (TMNT belongs to Nickelodeon and Sonic Boom belongs to Sega and Cartoon Network so this story is just a fan fiction/crossover thing)

Kyree is a 17 year old girl who has some problems. Anger issues and an abusive father threaten her life everyday. When she does try to escape, her father catches her. Both of them get attacked by the Foot Clan-Kyree being the main target. The four heroes that everyone knows help get her out of the trouble and take her to their lair. When Kyree falls in love with one of the turtles, she realizes that it isn't about getting revenge. It's about keeping your family safe. Join Kyree and the four teenage mutant turtles on a journey full of hatred, pain, sadness, and even a little happiness. (Credit goes to the makers of Teenage Mutant Ninja Turtles)! Based on the 2012 TV seires.

Victoria and Caterina are two regular Mutants, Vee being a half mutant and Cat a fully mutant that live their pretty normal lives as two bloggers. While their other two younger sisters, Summer and Anna Mary, live with their boyfriends and having a blast. They visit the two elders as much as they can. Vee and Cat had their reasons for being bloggers. Sometimes it was hard for them to live as mutants even if there were many that were mutants. Cat and Vee had been picked on most of their lives as kids and try to get around but also try to tell people that mutants can also be like humans. As they say life is not so easy on some days. However on a day the two decided to go out for the day and suddenly went to a museum because of the heavy rain. And to top it all of get lost when the tour guide continued showing around and to hear a voice guiding them to an unknown chest. That was something out of the ordinary. But what came out of it when it was accidentally knock over by the two young women. They never expect that two turtles of a thousand years old to be in front of them telling them they are turtle djinns and later tell them they are their Summoners. But what the two ordinary mutant bloggers don't know is that something much bigger and dangerous then they truly think. Would be coming after them just because of the djinns Leonardo and Raphael. What will happen in this love and adventurous story await them? Inspiration of the mobile game Love spirit! Game is on Google playstore. P.S. I do not own tmnt 2003 only my characters I have created.

Takes place after "Earth's Last Stand" Raph was really upset after what happen when he was in his space adventure when Mona Lisa betray him. Then he met Sunset Shimmer and then he started to feel the same reaction when he met Sunset. Then as Raph and Sunset spends so much time with each other they will soon realize they will have feelings toward each other.

Rosa is an eight year old kid dealing with fighting parents. She has no friends, and every time she tries to talk to their parents they are in the middle of a fight. One day she walks alone in the streets on a dark night. Bad idea! She ends up meeting Leo, Raph, Mikey, and Donnie when they are kids. As they grow up with each other, they will learn that a true friend is not something that is found everyday. (I don't own Teenage Mutant Ninja Turtles or the characters. i just own this fanfiction. Sorry if the description is not that great, but that's all I can think of. I hope you enjoy!)

Gwen ends up getting captured by the Kraang, then gets saved by the Teenage Mutant Ninja Turtles. Read and find out what happens on Gwen's adventure away from home.

Aided by April, EC, KC, Izzy and newcomer Casey, the Ninja Turtles fly into action after Shredder escapes prison and plots to take over the world with evil Krang. A lot has happened in the last 2 years. Leo and Izzy's relationship has improved, along with KC and Raph's. But what happens when after a night of...passion that the two girls find out the most shocking news of their lives. What will they do? And will they be able to tell the love of their lives the news, or will it be too late?