It could be a young orphan. Orphans often struggle to find a place where they belong, so this character would have a strong motivation to search for that special place. They could be kind - hearted but also have a bit of a feisty side to survive in the world of the fanfic.
Perhaps an alien who has crash - landed on Earth. The alien is completely out of place in this new environment. They have to learn about human ways while also looking for a place where they can be themselves and not be feared or hunted. This would make for an interesting main character in the 'a place to belong fanfic'.
It depends on the specific fanfiction. It could be the main characters from the original work that the fanfiction is based on, but often new characters are introduced as well. For example, if it's based on a TV show, the original cast might be there, but a new love interest or a mysterious stranger could be added.
Jackie Estacado from 'the darkness' is an obvious choice. His connection to the Darkness power makes him a central figure and his skills and personality can drive the story forward in a crossover.
It could be the original main characters from the source material, just older and more experienced. For example, if it's a fanfic based on a teen drama, the once - young protagonists are now adults with more responsibilities.
A cunning spy could be a main character. They are always using artful maneuvers to gather intelligence and avoid getting caught. Their skills in deception and stealth would be central to the story.
Perhaps an old wise man who has known about the Bodacious Peach for a long time but has kept its existence a secret. When trouble arises related to the peach, he has to step forward and use his knowledge to protect it or guide others.
Perhaps there are characters with different skills like a navigator, a scientist, and a survival expert. They each contribute in their own way to the journey in the fanfic.
I don't know for sure as I haven't read it. It could be the main characters from the original work that the fanfic is based on, or it might introduce some new characters that play important roles in creating or being part of this safe place.
Well, Ben is the central figure. But don't forget about Kevin Levin. His ability to absorb and use different forms of energy could be very relevant in the Warhammer universe filled with all kinds of strange energies. In Warhammer, a Chaos Sorcerer could be a main character. The way his dark magic would interact with Ben's powers and the overall plot would be full of potential. Also, Rook Blonko from Ben 10 could be important. His skills and loyalty could add a different dynamic to the story as they explore the Warhammer universe together with Ben.
An old seer who lives on an isolated island in the cold waters could be a main character. He has the power to foresee events related to the sea. People from all over come to seek his advice, and his interactions with those who visit could form the basis of the story.
A potential main character could be a young hero - in - training who discovers they have an affinity for magic. They would then have to balance learning their hero skills with mastering magic, like Izuku Midoriya but with a magical twist.