Explore his relationships more deeply. Maybe he has a soft spot for a certain character, like a little mouse that he secretly protects. This would add layers to his character. Also, show his internal struggle between his evil side that wants to cause trouble for Courage and a side that might be tired of being the bad guy all the time.
Well, one special thing could be its unique art style. The illustrations in Katz graphic novel might have a distinct way of depicting characters and settings, making it visually appealing.
The main plot likely involves the relationship between the boy and Mr Katz. It could be about their adventures, how they interact, and what they learn from each other.
The boy is one of the main characters. He is probably the one through whose perspective we see the story unfold. And Mr Katz, who must be an important figure in the boy's life in the context of this story.
One popular theme is the unlikely friendship between Courage and Katz. Despite Katz's often - menacing nature in the original show, in fanfiction, they might form a bond over shared experiences or mutual understanding. For example, they could both be outsiders in their own ways. Another theme could be adventure. Since Courage is constantly facing strange and dangerous situations in the show, fanfiction might expand on adventures that involve Katz as well, like they team up to save the farm from an even greater threat than usual.
Sarah was significant as she was Abraham's wife. She was part of God's plan to create a great nation. Even though she was barren for a long time, her eventual pregnancy and the birth of Isaac were important steps in fulfilling God's covenant with Abraham.
I'm not sure exactly who Sarah is without more information from the story. But she is likely a person who has a weight problem and is the focus of the '600 pound life' story.