One great Teen Titans x Reader fanfiction is 'A Titan's Heart'. It has a really engaging plot where the reader character becomes an important part of the Teen Titans team. The interactions between the characters are well - written and it feels very immersive.
First, you need to understand the personalities of the Teen Titans characters well. For example, Robin is the leader, so he should act in a responsible and strategic way. Then, create an interesting backstory for the reader character. It could be something unique like they come from a different dimension.
Starfire would be extremely warm and affectionate towards the child. She might share her alien culture with the child, like teaching them about Tamaranian food or traditions. Cyborg could be like an older brother figure, showing the child his cool gadgets and teaching them about technology.
One possible fanfiction could be where Orochimaru somehow gets involved in the Teen Titans' world and meets Red X. Maybe Orochimaru is after some sort of powerful artifact that the Teen Titans are protecting. Red X, being the mysterious anti - hero, might initially see Orochimaru as a potential ally to get his hands on the artifact for his own gain. But as the story progresses, he realizes Orochimaru's true evil nature and teams up with the Teen Titans to stop him.
Naruto could fit in by sharing his knowledge of the ninja world. This could include things like how to make different types of ninja tools or how to perform certain stealth techniques. In return, the Teen Titans could teach him about teamwork in a different way than he's used to in Konoha. His unique abilities like summoning animals could also be a huge asset when they are up against tough enemies.
Another type of Teen Titans fanfiction that is different from what you mentioned is the ones that focus on the relationships between the Teen Titans and other superheroes or characters from the DC universe. These can be really interesting as they show how the Teen Titans interact with a wider range of characters and how they fit into the overall DC world.
Yes, there are likely some out there. You can try searching on fanfiction websites. Some sites have a large collection of Teen Titans - related fanfictions, and within those, there might be ones featuring Speedy in a yaoi relationship. However, the availability can vary depending on the site's content and the popularity of such pairings among the fanfiction writers.
One interesting storyline could be the Teen Titans protecting the child reader from a new supervillain in town. They might take the child under their wing, teaching them about courage and friendship along the way.
Archive of Our Own (AO3) is another great place. It has a very comprehensive tagging system. Just search for 'Teen Titans', 'Raven', 'Reader' and exclude any tags related to adult or lemon content. You might also check out Tumblr, as some users post links to or write their own non - lemon fanfics there.
Adventure themes are also common. The reader and Raven could go on a quest together, perhaps related to a new threat in the Teen Titans' world. They might have to use Raven's powers and the reader's unique skills to overcome obstacles. This can make for an exciting and engaging story without any inappropriate content.