Black Widow could also be a great main character. She could be on a mission to gather information about any remaining threats or loose ends from the war. She could be working undercover, using her spy skills to keep the peace in the post - war world.
A character like Doctor Strange could be the main character. He could be using his magic to heal the wounds of the Earth, both physical and magical, left by the war. And we could see his perspective on how to deal with the Hulk in the aftermath.
The Hulk could still be the main character as we follow his journey of redemption. He might be trying to regain the trust of the people and his fellow heroes.
Wanda Maximoff could also be the main character. After losing Vision, she could be on a rampage. But then she realizes that she needs to control her powers and use them for the greater good. She could be a key player in trying to bring back the vanished ones and fighting any new threats that emerged after Infinity War.
One idea could be exploring the rebuilding efforts on Earth. Show how different cities are being reconstructed and the role of various superheroes in it. For example, Iron Man could be using his tech to rebuild Stark Tower.
Captain America could be the main character. He's always been a leader, and in the aftermath, he could be the one trying to hold the remaining Avengers together. He would be dealing with his own sense of loss and responsibility. He might also be trying to figure out how to prevent future disasters like Infinity War.
Sora would be an obvious choice as he has been the central character throughout the series. His journey doesn't end with the defeat of Xehanort, and there are still many things he could experience in the aftermath.
Naruto could be the main character. He has the spirit and determination to adapt to the new and dangerous world of Planet Hulk. His ability to make friends and his never - give - up attitude would make him a great fit to be the central figure in this fanfiction.
The main character is of course the Hulk. Then there are the members of the Illuminati like Doctor Strange, Mister Fantastic, etc. Also, heroes like Iron Man, Thor, and the rest of the Avengers, as well as the Fantastic Four are important characters as they are the ones who face off against the Hulk.
The main character is, of course, the Hulk. But other important characters include Iron Man, Doctor Strange, and the Illuminati. They play key roles in the events that lead to the Hulk's rage and the ensuing war.
It could be a power - hungry politician who wants to use the Hulk as a weapon to gain more control during the Civil War. This person might not care about the destruction the Hulk could cause, just as long as they achieve their own goals.
The Abomination could be a great main antagonist. He already has a history with the Hulk and his hatred for Hulk could extend to She - Hulk as well. He could be trying to create a new gamma - based weapon to finally defeat the Hulks once and for all.
One of the great things about a World War Hulk crossover fanfiction is the potential for character growth. Hulk, who is already a complex character, can be further developed. Maybe he learns to control his anger in a different way when faced with new challenges in the crossover. Also, other characters involved in the crossover can have their own arcs. For instance, if a less - known character from another universe teams up with Hulk, they might gain more popularity and depth through this fan - created story.