Time travel can greatly accelerate a character's growth. For example, if Edward travels back in time, he has the knowledge of his previous experiences. He can avoid making the same mistakes he made before, which makes him seem more mature and wiser in a short time. He might also face new challenges that come with changing the past, which forces him to grow in different ways.
Time travel for Harry could be a way to confront his past traumas. He might go back to a time when his parents were alive and get some closure. This could make him more at peace with himself and less haunted by his past. As for Tonks, time travel could expose her to different forms of magic and different social structures. If she travels to a time when pure - blood - supremacist ideas were more prevalent, she could become more of an advocate for equality. She might also see how her family has evolved over time, which could give her a stronger sense of identity and purpose.
Well, there's the 'alternate - timeline' trope. Time travel can create new timelines in fanfiction. So, instead of the main story's events, a whole new set of events unfold. Maybe in one alternate timeline, Alphonse never lost his body because of something the time - traveling Edward did. And the 'time - loop' trope can also be seen, where a character is stuck repeating a certain period of time until they figure out how to break the loop, which adds a lot of mystery and suspense to the fanfiction.
In these fanfictions, time travel often makes the characters question their destinies. For example, Oliver Queen might see his past self and wonder if he can change his fate. It adds a layer of self - discovery to his character.
Daniel Jackson, on the other hand, would be fascinated. His love for history and knowledge would make him eager to explore different time periods. However, he would also be very aware of the potential consequences of changing history and would struggle between his curiosity and his sense of responsibility. Time travel could also bring out a more protective side in him as he tries to preserve the past as it should be. Sam Carter might see time travel as a scientific challenge. She would be eager to understand the mechanics behind it, like how the Stargate manages to open a wormhole not just in space but also in time. This could lead her to some dangerous experiments as she tries to figure it all out, and she might also use her knowledge of future technology to try and improve the past, especially when it comes to fighting the Goa'uld.
In some fanfics, time travel can strengthen their relationship. For example, if they travel back in time and face difficult situations together, they rely on each other more. This shared experience can make their bond deeper.
Well, it can change the whole course of events. For example, if a character travels back in time and warns Frodo about a particular danger he'll face, it could lead to a completely different outcome for the quest. Maybe Frodo would be better prepared and not get as injured or lost along the way.
Time travel can completely change their missions. They might have to redo a mission they already completed in a different way. For example, if they failed a mission in the original timeline, they could go back and try to succeed this time. Or they might have a new mission altogether because of the changes in the timeline that they caused through time travel.
If they travel together through time, their relationship becomes more of a partnership. They have to rely on each other in a different time period. This shared experience of exploring different eras and facing challenges together can make their bond even stronger. They might discover new things about each other that they never knew before, like Naruto finding out how brave and resourceful Himawari can be in a completely unfamiliar situation.
In time travel fanfiction, if Jiraiya goes back, it can have a huge impact on his relationships. He may be able to save some relationships that were lost in the original timeline. For instance, he could repair his broken friendship with Orochimaru. Regarding his relationship with Naruto, if he travels back to Naruto's childhood, he can be a more effective teacher and friend. This could lead to Naruto trusting him even more. And if they travel back together, they rely on each other more in the different time period, which enhances their bond.
For Boruto, time traveling might make him more appreciative of the past and how hard his father worked to build the world he lives in. He could become more humble and learn from the simplicity and determination of the past generations. His friends, too, might gain a new perspective on their own lives. For example, Sarada could see how her mother was as a young kunoichi and understand her better.