There could also be a group of misfits as main characters. They are the ones who don't fit into the regular social groups in the vault. Together, they form a bond and start to explore the vault's hidden corners, face challenges, and ultimately try to make the vault a better place or at least survive in a hostile environment.
Obviously, Kleo is the main character. But often, other Fallout 4 characters also make appearances. For instance, the Sole Survivor might be in the story, interacting with Kleo in various ways, like being her ally or sometimes her rival. Dogmeat could also be there, adding a bit of that cute and loyal element to the fic.
Obviously, Charon is one of the main characters. The Lone Wanderer is also very likely to be involved as they have a connection in the original game.
One interesting story could be about the unique social structure within Vault 68 in the fanfiction. Maybe there are special rules and hierarchies that the characters have to navigate. For example, a group of survivors might be trying to overthrow a tyrannical overseer who has been misusing the resources of the vault.
I don't know as I haven't read the 'vault short story'. There could be a brave adventurer trying to access the vault.
I don't know as there's not enough information given. It could be bank employees, thieves, or people with a connection to the vault.
Often in Fallout 4 fanfictions, there might be a character who is a skilled scavenger. In 'Story of the Century Fallout 4 Fanfiction', this character could be one of the main ones. They use their skills to find valuable items in the wasteland. There could also be a character who has some sort of connection to the pre - war world and is trying to use that knowledge to better the present situation.
Good vault stories usually involve complex social structures within the vault. Take Vault 101 from Fallout 3. There was a strict isolationist policy, and the main character had to deal with the rules and the people who enforced them. The relationships between the different factions within the vault, like the Overseer and the rebels, add depth to the story.
In Fallout: New Vegas, Vault 22 has an interesting story. It was a vault where they were conducting agricultural experiments. However, things went wrong as mutated plants started to take over. The exploration of this vault reveals a lot about the hubris of the pre - war scientists who thought they could control nature completely. The remains of the vault and the mutated plant life make for a spooky and thought - provoking vault story.
Often, there's a brave and curious protagonist. This character is usually the one who drives the story forward, eager to explore the stars. There might also be a wise mentor figure, who has more experience and guides the protagonist. And then there's the sidekick, a loyal friend who is always there to support the main character.
Typically, Ches and Sa are the main characters. They are at the center of most of the stories.