Definitely Maka. She's always at the forefront of trying to make things right in the Soul Eater story, so it makes sense for her to be a time - traveler in fanfiction. Black☆Star could also be a character who time - travels. His ambition to be the greatest might lead him to go back in time to gain more power or change the past to prove his superiority earlier. And Crona might time - travel in an attempt to escape their tortured past or to prevent the events that made them so broken in the first place.
Well, in many Soul Eater time travel fanfictions, Death the Kid is a popular choice. His precision and his role as a future heir of Death make him a logical character to time - travel, perhaps to ensure the future of the world he is meant to inherit. Maka is another common one, as her bond with Soul and her quest for justice could push her into the time - stream. Additionally, Stein could be a time - traveler. His scientific curiosity and his somewhat unstable nature might lead him to experiment with time travel to understand the deeper mysteries of the Soul Eater universe.
In Yugioh 5ds time travel fanfiction, Yusei Fudo is a very common character to be involved in time travel. He is the hero of the story and has a strong will to protect his friends and the city. His connection to the Signer Dragons also gives him a special role in any time - related events. Another one is Akiza Izinski. Her psychic powers could potentially be related to time travel in some fan concepts. Also, she has a complex backstory and emotions that could be explored through time - traveling scenarios. And of course, Bruno, with his mysterious origin and knowledge, is likely to be involved in time travel plots as he might hold the keys to understanding the time - space continuum in the Yugioh 5ds universe.
One popular plot could be a character going back in time to prevent a major disaster in the Soul Eater world, like the resurrection of a powerful and evil being. Another might be a time - traveling adventure to meet the younger versions of the main characters and influence their development in unexpected ways. And sometimes, it's about a character from the future coming back to correct a mistake they made in their own past within the Soul Eater timeline.
Scarlett O'Hara is a very common character to be time - traveled. Her strong - willed and complex personality makes for interesting time - travel scenarios. For instance, if she were to travel to the modern day, her reactions to modern feminism and women's roles would be fascinating to explore.
Robin is often paired with Batman in time travel fanfiction. Since Robin is Batman's sidekick, they can go on time - traveling adventures together. They might go back in time to save the other Robins from their fates or forward in time to see what the future holds for the Batman - Robin partnership. Another common character is Alfred. Alfred could accompany Batman through time, providing his wisdom and support in different time periods.
Naruto is obviously the most common character since it's his time travel. Hashirama Senju is also very common as he was the founder of Konoha and has a huge influence in the Senju clan's history. Tobirama Senju often appears too as he was an important figure in the clan and in the development of Konoha.
Stan Pines also shows up a lot in these fanfictions. Given his complex past and his role in Gravity Falls, he can have some really interesting time - travel related storylines. He might go back in time to right his wrongs or to understand something from his past better. Another character that can be common is Bill Cipher. Since he's such a powerful and mysterious villain, time travel can be used to either stop him before he becomes too powerful or to find a way to defeat him in a different time period.
Obviously, Cloud Strife himself is the central character. Aerith is often included as she has a significant connection to the story's lore and Cloud's journey. Tifa is also common, given her relationship with Cloud. Sephiroth frequently appears as the main antagonist whose actions often drive the need for time travel in the first place. Zack Fair might also show up, especially if the fanfiction delves into Cloud's past and how Zack influenced him.
Batman himself is a likely candidate. Given his intelligence and determination, he might stumble upon a time - traveling device or technology while investigating some strange phenomenon. He would be driven by his need to protect Gotham, perhaps by preventing a future catastrophe that he has foreseen.
Ban could be another one. He has his own backstory related to the sins and his immortality. He might time travel to find a way to break free from his immortality curse or to go back and correct a mistake he made when he was under the influence of one of the sins, like greed when he stole something important in the past.
Morgan could be an interesting addition. He might accidentally get caught up in Chuck's time - travel adventures. His comical nature could provide some light - hearted moments in an otherwise complex time - travel plot, like when he misunderstands the technology or customs of a different time.