The most important character is Izuku as he is the one experiencing the meetings. But we can't forget the first user of One For All. In the fanfiction, this first user could have a profound impact on Izuku. Their initial intentions for creating and passing on One For All might be revealed, which could change Izuku's perspective on the power and his role as its current wielder. And of course, All Might as an important link between the past and present users is also a key character.
Obviously, Izuku is a very important character as the main protagonist. The previous One For All users also play crucial roles. They could include All Might, who was the most recent user before Izuku. Each of the other past users, whose identities may not be fully known in the original story but could be explored in the fanfiction, are also important as they are the sources of the power's heritage.
Well, he may also have some emotional encounters. Maybe he'll have heart - to - heart conversations with the past users' consciousness within One For All. This could help him better understand the true nature of the power and the great responsibility that comes with it.
There could be some original characters created by the fanfiction writer. For example, a mysterious mentor figure who has been secretly training Izuku in a special technique that he can use against All for One. This mentor could have their own backstory and motives that are intertwined with the main plot of the fight.
One could be All Might. Even if Izuku leaves Japan, All Might might still be in contact with him, guiding him from afar. Another could be Bakugo. Their relationship is complex, and Bakugo might have some sort of reaction to Izuku leaving, perhaps feeling a sense of rivalry still and trying to prove he can be a great hero in Japan while Izuku is away.
It's hard to say who would be stronger. Izuku has his own unique set of quirks and is constantly growing in strength. However, Ghost Rider has his supernatural powers. It could depend on the situation. In a fight that requires strategy and agility, Izuku might have an edge. But if it's a battle of raw power and the ability to instill fear, Ghost Rider would likely be the stronger one.
It's hard to say. Ichigo has his Soul Reaper powers which are incredibly strong. He can cut through almost anything with his Zanpakuto. But Izuku has One For All which gives him superhuman strength, speed, and the ability to jump really high. So it depends on the situation.
Bakugo is a likely candidate. Despite their rocky relationship in the beginning, Bakugo has come to respect Izuku's growth and strength. In a fight against All for One, Bakugo's powerful quirk and combat skills would be a great asset.
Obviously, Izuku Midoriya is the main character as he is the one mastering One For All early. Katsuki Bakugo might also be prominently involved. Since he has a long - standing rivalry with Izuku, his reaction to Izuku getting such a powerful quirk early on could be a major part of the story. Maybe he feels jealous or challenged in a new way.
One possible supporting character could be Bakugo. He might be initially reluctant to help Izuku but then realizes the importance of the fight against All for One and joins in. His explosive powers could be a great addition to the battle.
In many BNHA fanfictions where Izuku meets All Might early, it often changes the entire trajectory of Izuku's development. For example, he might gain confidence much sooner. Early meetings can also lead to a more in - depth mentorship that might deviate from the original storyline. This could result in Izuku getting special training earlier and potentially unlocking his Quirk in a different way.
In this fanfiction, Jonathan is the central figure. His descendants, which could include a variety of individuals. There might be an older descendant who has preserved a lot of family history and is eager to share it with Jonathan. And there could also be a young, curious descendant who asks Jonathan a million questions about the past.