The Riddler could be a great main antagonist. He could use his knowledge of time paradoxes and puzzles to try and outwit Batman as he travels through time. He might set up elaborate traps across different time periods that Batman has to solve.
One idea could be Batman traveling back to the time when Gotham was first founded. He could try to prevent the seeds of corruption from being sown. Another plot could be him traveling to a future Gotham that has been completely overrun by villains and he has to find a way to change that future by altering events in the past. Or perhaps he travels to different time periods to gather knowledge and technology to better fight crime in his own time.
Well, in some fanfics, time travel is more complex. There might be special portals or ancient magic that allows for time travel. For instance, there could be a hidden chamber in Hogwarts that holds the key to traveling through time. And the consequences of time travel can range from minor changes in the present to completely rewriting the future of the wizarding world. Sometimes, characters find that they can't change certain events because they are 'fixed points' in time, much like in some theories of time travel in other science - fiction and fantasy works.
One great Adventure Time time travel fanfic is 'Time Twisted Tales'. It takes Finn and Jake on a wild journey through different timelines, where they meet alternate versions of their friends. It has really cool art and a fast - paced plot that keeps you hooked from start to finish.
In most 'Harry Potter Time Travel Founders Fanfic', time travel often works through magical artifacts or spells. For example, a powerful time - turning charm might be used. Sometimes, it could be an enchanted object like a special mirror or a locket that has the ability to transport a character back to the founders' era.
Ruby would be really interesting. Since she's the main character, seeing her go back in time and interact with her younger self or her mother could be really emotional and full of character development. She could also use her knowledge to make herself an even better Huntress at an earlier age.
One great Sasusaku time travel fanfic is 'A New Beginning'. In this fic, Sakura travels back in time and tries to change the future. It has a really interesting plot where she uses her medical knowledge in unexpected ways in the past. The relationship development between Sasuke and Sakura is also well - written, with lots of sweet and angsty moments.
In a time travel Sakura fanfic, perhaps Sakura travels to the future. She might find a world where ninjas are no longer needed for combat but are more like historians of their own art. Sakura could struggle to find her place in this new world where her combat and medical skills seem less relevant. But in the end, she could use her knowledge of the past to bring a new sense of purpose to the ninja arts in this future society.
One great MHA time travel fanfic is 'Back to the Start'. It has an interesting plot where the main character goes back in time and tries to change certain events in the MHA world. The character development is really well - done in this one.
One great 'Naruto Time Travel Fanfic' is 'A New Chance at Life'. It has an interesting plot where Naruto goes back in time and tries to change things for the better. The character development is really well - done in this fic.