One idea could be an OC who is a new mutant in the city. They could have a unique power like the ability to control plants. At first, they are scared and confused about their new form and powers, but as the story progresses, they learn to use it for good and join the turtles in their fight against the bad guys.
First, think about their backstory. For example, if your OC is a mutant, what caused their mutation? Was it an accident in a lab, or something more mystical? Second, give them a unique personality. They could be shy and reserved, or bold and brash. Third, consider their abilities. Make sure they fit within the world of Rise of the TMNT. If they have a super - strength ability, explain how it developed and how it affects their interactions with others.
One interesting plot idea could be an alternate universe where the turtles have different elemental powers. For example, Leo could control ice, Raph fire, Donnie electricity and Mikey wind. This would change their fighting styles and how they interact with villains.
Begin by creating an outline. Decide on the main conflict. It could be something like the turtles trying to stop a powerful mutant from taking over the city. Then, break it down into smaller parts like how they discover the threat, how they prepare to fight, and how they ultimately defeat the enemy. Also, don't forget to add some character - building moments, like an argument between Leo and Raph that shows their different perspectives but also how they grow from it.
Your local library is also a good option. Libraries sometimes carry tmnt novels in their young adult or graphic novel sections. It's a great way to read them for free and see if you like them before buying.
You could begin with the IDW Publishing run. It offers a modern take while still respecting the core of the characters and their world. Plus, it's relatively accessible for new readers.
Local libraries often have a collection of comics. You could check your local library to see if they have TMNT comics. Another option is to visit your nearest comic book store. They usually stock a variety of comics, including TMNT.
DeviantArt can also be a source for this kind of fanfiction. While it's mainly known for art, there are some writers who post their stories there as well. You can search using relevant tags like 'tmnt batman crossover fanfiction' to narrow down your search.
Archive of Our Own (AO3) is also a great place. There are some really high - quality bayverse tmnt fanfics there. The tagging system makes it easy to find exactly what you're looking for. You can search for specific genres, pairings, or story elements related to bayverse tmnt.
Another option is to visit specialized book fairs or conventions that focus on comics and graphic novels. At these events, you'll not only find tmnt graphic novels but also have the chance to interact with other fans and collectors. You might even discover some rare or hard - to - find editions.