Definitely Iona. As an advanced Fog ship that has developed emotions and a sense of self, if she were to time travel, she could have a very unique perspective. She might be confused by the differences in the past or future she travels to, and her attempts to understand and fit in could lead to some really engaging storylines. Also, her relationship with the other characters would be very different in a time - travel context.
In a time travel fanfic for Arpeggio of Blue Steel, character development could be amazing. A character traveling through time might gain new perspectives. For instance, a Fog ship that travels back might start to understand human emotions better by seeing how humans were in the past.
One idea could be a character traveling back in time to prevent the initial conflict in the Arpeggio of Blue Steel world from starting. Maybe they go back to a time before the Fog first appeared and try to stop whatever caused it. This could change the entire course of the story, with new alliances and power dynamics emerging.
A time travel fanfic in the Arpeggio of Blue Steel universe could be really exciting. It could explore different eras of the world in that story, like maybe going back to the time when the Fog first emerged. This would give a chance to see how the initial interactions between humans and the Fog were, and might even change the course of events in the original story.
Shikamaru might be the most influential. He is known for his intelligence. In a time travel situation, he could quickly analyze the situation, come up with plans, and predict the consequences of different actions. His strategic mind would be crucial in dealing with any unexpected events during the time travel, whether it's in the past or the future.
Hinata would be a great choice. He's so full of energy and determination. If he traveled back in time, he could share his experiences of playing against strong opponents like Nekoma and Aoba Johsai with his younger self. It would be really cool to see how his past self would react and grow even faster with that knowledge.
Bakugo could also be a great choice. If he went back in time, he might have to face his own arrogance from the past and try to change his ways earlier. It could be a journey of self - discovery for him as he realizes how his actions in the past affected others and how he can be a better person and hero in the future.
Hook would be an interesting character for OUAT time travel fanfiction. His past as a pirate and his relationship with Rumplestiltskin are full of drama. If he were to time travel, he could go back to when he first lost his hand to Rumplestiltskin and try to change that event. Or he could travel to a time when he was a more ruthless pirate and see how that version of himself compares to the man he has become.
Kazama Chikage might be an interesting choice as well. He is a powerful and somewhat arrogant character. If he time - travels, perhaps to a past era where his clan was even more powerful, he could try to change history to make his clan even more dominant. Or if he travels to a future where his power is nothing compared to modern technology, his struggle to come to terms with his new position in the world would be an interesting plotline.
Iroh would be fascinating to see time - traveling. He has so much wisdom already. If he traveled to different times, he could share his knowledge and perhaps change some key events. He could also gain more insights from other time periods, which would further enrich his already deep understanding of the world.
Daenerys Targaryen. She has a strong will and a mission to claim the Iron Throne. If she time - traveled, she could meet her ancestors and learn from their successes and failures. She could also try to prevent the downfall of her family in the past, which would have a huge impact on the present state of Westeros in the fanfiction world.