It could be an ordinary young man. Maybe a shy teenager who one day wakes up with these amazing powers and has to figure out how to be a god. For example, he might be a high - school student who was bullied before getting the powers.
A woman could also be the main character. She could be a scientist who was working on some top - secret experiment that went wrong (or right, depending on how you look at it) and it turned her into a new god. She would then use her scientific knowledge along with her new powers to improve the world, perhaps by finding solutions to environmental problems or curing incurable diseases.
Perhaps it's about a group of people who witness the emergence of this new god among men. Some see him as a savior, while others see him as a threat. The fanfiction could then explore the relationships between these different groups and how they interact with the new god. It could also involve the new god's journey to understand his own powers and purpose, which might be filled with self - discovery, challenges, and moral dilemmas.
Well, obviously, there's the 'god among men' character. This could be a male or female figure with superhuman abilities, like being able to control the elements or having super strength.
It could be a Saiyan. Since Saiyans are known for their strength and love for battle. A Saiyan could be chosen to become the new God of Destruction, like Goku or Vegeta's descendant who has a unique power that makes them suitable for the role.
It could be an old rival who has also gained some sort of dark god - like powers. For example, Sasuke could have been corrupted by a powerful dark force while seeking more power, and now he stands in Naruto's way as he tries to use his new god - like abilities for good.
I think Spider - Man would make an interesting main character. He's young and has a different perspective compared to the more experienced Avengers. His journey of growing up and becoming a more integral part of the team could be a central theme in the fanfiction. He also has his own set of personal problems like school and his relationships which could add depth to the story.
Perhaps a minor character from the original Fate series could be promoted to the main character. For example, a bystander in one of the battles who witnessed something extraordinary and was then drawn into the world of the Holy Grail War in a more central way in the 'a new fate fanfiction'.
It could be an ordinary person from our world, like a high school student. They're suddenly thrust into this new world and have to adapt. Their inexperience in this new environment can lead to many humorous and exciting situations.
A young prodigy who has been underestimated all his life. Fed up with being pushed around, he uses his intelligence and unique abilities to rise to power and become the world overlord.
It could be a young and ambitious wizard who has come to the town to assert his magical dominance.
Naruto himself could be the main character. Since he's the protagonist of the original series, it would be natural to have him as the center of the fanfiction. He could be drawn into the new game world and have to use his unique skills and determination to succeed.