Shun would also be a good choice. His calm and strategic nature would serve him well in the unpredictable situations that come with time travel. He might be more interested in exploring the historical aspects of Bakugan in different time periods and uncovering secrets that could benefit the present.
One idea could be that a character travels back in time to the origin of Bakugan and changes something that affects the current Bakugan battles. For example, they might accidentally stop the creation of a powerful Bakugan type, which then changes the power dynamics in the present-day battles.
Some Flash time travel fanfics play with the idea of time travel via dreams. Barry Allen could enter a dream - like state where he experiences different timelines. It's an interesting take as it blurs the line between reality and the subconscious.
One idea could be that Naruto discovers the Bakugan world during one of his training journeys. He meets Alice and they team up to fight against an evil force that is trying to take over both the ninja world and the Bakugan world. Naruto's ninja skills combined with Alice's knowledge of Bakugan could make for an interesting story.
One common trope is the 'fish out of water' situation. The time - traveling character is suddenly in a different era and has to deal with the strange customs, technology, or social norms. For example, a modern - day character going back to the Middle Ages and being shocked by the lack of indoor plumbing. Another is the 'butterfly effect' trope. Small changes the time traveler makes in the past can have huge, unforeseen consequences in the future.
Another way time travel works in these fanfictions is through dreams or visions that turn out to be more than just that. A character might have a really vivid dream about the past or future in Riverdale, and then suddenly find themselves actually in that time period. This method allows for a more psychological exploration of the character as they deal with the shock of suddenly being in a different time and having to figure out what's real and what's not.
In some RWBY time travel fanfiction, it might work through the use of a special relic. The relic could have powers that are not fully explored in the original series but in fanfiction are used for time - traveling. For example, it could be activated by a specific combination of Dust or a certain type of Grimm blood.
In some Bridgerton time travel fanfictions, it could be a magical object that enables the time travel. For example, a mysterious locket that transports the wearer to different eras within the Bridgerton world.
In many Narnia time travel fanfictions, it often involves magical objects. For example, a enchanted hourglass might be the key to traveling through time. The sand in the hourglass could have the power to send the character to a specific time in Narnia's past or future.
In Homestuck time travel fanfiction, time travel often involves the use of the various time - related mechanics in the Homestuck universe, like the Green Sun or the Scratch. The Green Sun, for example, could be a portal through which characters can travel to different points in time.