It could be a new, young superhero. For example, a teenager who has just discovered their powers and stumbles upon the sleeping Avengers. Their inexperience and fresh perspective could add an interesting dynamic to the story.
Perhaps an old sidekick of one of the Avengers. They have always been in the shadow but now they have to step up and take on the responsibility of waking the Avengers. They would have some knowledge about the Avengers which could be useful in their quest.
One idea could be exploring an alternate reality where the Avengers are in a deep slumber due to a powerful spell. A young hero discovers the sleeping Avengers and has to find a way to wake them up using their own latent powers. This could involve a journey of self - discovery for the young hero as well.
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.
Captain America might be the main character. He represents the heart and soul of the Avengers in many ways. In this fanfiction, he could be the one leading the team through an emotional crisis, using his unwavering moral compass to guide them and protect the heart of the team and the world they are trying to save.
A new superhero created specifically for the fanfiction could be the main character. This character could have a power that is a combination of different Avenger's powers, like being able to have super strength like Hulk and also fly like Iron Man. Their unique abilities would draw the attention of the Avengers, making them the center of a harem - like story.
Maybe a kind-hearted storyteller. They have the ability to communicate with the animals in the Lion King world through their stories. The animals are fascinated by the human's tales and the storyteller uses this to bring peace and unity among different animal groups, especially during times of conflict. They could also use their stories to inspire Simba to be a better leader.
It could be a young girl who has just started her Pokemon journey. She might be shy at first but grows more confident as she bonds with her Pokemon. Her Pokemon could be a Pikachu that has an unusually strong electric power.
Iron Man could be the main character. He could use his technological genius to enhance the wings. Maybe he creates a special alloy for the wings that can withstand extreme heat and cold, and also has built - in weapons. He would be constantly tinkering with the wings, trying to make them better, all while using them to fight off new threats.
Obviously, the cook would be one of the main characters. They could be a young and ambitious chef who has always dreamed of working in a place as exciting as the Avengers Tower.
It could be a simple village girl. She might be kind, with a love for nature, which catches Legolas' attention. Maybe she has a special talent like being able to communicate with animals, which is something Legolas admires.
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.