The main character in the story "Charles" is a young boy named Laurie.
PROTAGONIST
There really is no name for that person. It's just a character that makes life miserable for the main character. She/he doesn't really have a name at all.
The main characters in Love Story by Erich Segal are Oliver Barett IV and Jenny Cavilleri.The main character in Love Story by Jennifer Echols is Erin Blackwell.
A Christmas Carol, By Charles Dickens. The name of the main character is Scrooge. Ebenezer Scrooge.
Protagonist
Since the main character is usually referred to as the protagonist, the title you're probably looking for is antagonist.
The character Scrooge appears in the novella "A Christmas Carol" by Charles Dickens. Scrooge is a central character in the story, evolving from a miserly and selfish man to a generous and kind-hearted individual over the course of the narrative.
The fat man is a main character of the story is because the story revolves around him and his wife. The funny thing is the fat man doesn't even have a name in the story.
Sam
The main character, or the central/primary character of a story is called the protagonist. It comes from the Greek word "protagonistes", which means "one who plays the first part, chief actor". The character that is the opponent of the protagonist is called the antagonist. The antagonist represents or creates and obstacle that the protagonist must overcome.
What is the name of the main character?
Oliver Twist In the book Oliver Twist by Charles Dickens