I'm not sure as there's not enough information. It could be kids, or some fictional creatures.
The main characters in the letter game story could be adventurers. They might be on a quest to find a lost alphabet or a magical book of letters. One of them could be a clever strategist who is good at coming up with letter combinations, another a brave soul who takes risks in the letter - based challenges, and there could be a wise old character who knows the secrets of the letter game from long ago. Their interactions and their different skills would drive the story forward as they face different letter - related obstacles during their journey.
Maybe there's a young woman who is the recipient of the love letter. She could be shy and initially unsure of how to respond to the heartfelt words.
I'm not sure as I haven't read the story. But it could be a child as they are often associated with Christmas letters, like writing to Santa. Maybe there's also a postman who has to deliver the letter in a snow - covered town, adding to the Christmas charm.
In the 'letter to the king story', the main characters would be the letter - writer, who could be a peasant, a noble, or a courtier. And then there's the king. There might also be other secondary characters like the king's advisors who might play a role in how the king responds to the letter. For example, if the letter contains a request for a new law, the advisors may either support or oppose it, influencing the king's decision.
The young boy who delivers the letter is a main character for sure.
In the 'scarlet letter full story', there are three main characters. Hester Prynne is the central figure, she is strong - willed despite her public shaming. Arthur Dimmesdale, the minister, is a complex character. He is respected in the community but is secretly tormented by his sin. Then there's Roger Chillingworth. He is Hester's long - lost husband who has a dark side and wants to make those who wronged him pay.
The main characters are Hester Prynne, a woman who has committed adultery and is forced to wear the scarlet letter 'A'. Arthur Dimmesdale, the minister who is secretly Hester's lover. And Roger Chillingworth, Hester's husband who returns after being thought lost and seeks revenge on her lover.
The primary character is without a doubt the boy. He is the one whose actions drive the story forward. He has a problem - his family's poverty - and he believes God can solve it, so he writes the letter. The postman is another key character. When he sees the letter addressed to God, he is faced with a dilemma. And the people in the village are also sort of characters in the background, as they are part of the community that the boy and the postman are in.
Given that we don't have much information about the 'the secret letter true story', it's really hard to identify the main characters. But in a general sense, if it's a story about a secret love letter, the main characters might be the two lovers. If it's a story about a political secret letter, the main characters could be politicians, their aides, or the people involved in the situation that the letter pertains to.
The main characters are C. Auguste Dupin, who is a brilliant detective. And the Minister D, who steals the letter. There is also the unnamed narrator who follows Dupin's investigation.
The main character is Lencho, a simple and devout farmer. He is a man who has a deep - seated faith in God. When disaster strikes his farm, he immediately thinks of writing to God for assistance. The post office employees also are important characters. They are initially amused by Lencho's letter addressed to God but are then moved by his sincere belief. Their actions of collecting money to send to Lencho, even though it doesn't end up as Lencho expects, are crucial to the development of the story.