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.
One plot idea could be Katz getting a taste of his own medicine. Maybe he tries to prank Courage again, but this time Courage outsmarts him in a really elaborate way. For example, Courage could set up a series of traps that lead Katz into a situation where he has to face his fears, just like he always makes Courage do.
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.
In fanfiction, the dynamic can change drastically. For starters, Katz might not be as much of a villain. He could be more of an anti - hero. This would make their interactions more friendly or at least less hostile. For example, instead of trying to trick Courage all the time, he might give Courage advice on how to deal with other threats in the area.
A 'courage the cowardly dog human fanfic' might explore the relationship between the characters in the show and humans in new and creative ways. It could involve imagining how the human characters interact with Courage and the other strange inhabitants of Nowhere. For example, it might delve into a story where a human befriends Courage and helps him face his fears in a different way than his usual encounters with the supernatural in the original series.
Pay attention to the writing style. Use simple and vivid language to describe the events and the characters' feelings. Since 'Courage the Cowardly Dog' has a lot of visual elements, try to translate those into words. For instance, when Courage is trembling with fear, describe his shaking legs, his wide - eyed look, and his internal monologue of how he has to be brave for Muriel and Eustace.
Well, writing a good Muriel fanfic starts with having a clear vision of who Muriel is. She's a very empathetic character. So, you could write a story where she befriends a lonely creature. When it comes to the plot, make it engaging. You can introduce a conflict, like a villain who wants to take over the farm. Muriel has to use her wits to stop it. In terms of writing style, keep it simple and descriptive. Describe the farm, Muriel's cottage, and her expressions. You can also add some elements from the show's unique art style into your descriptions. And always keep her relationship with Courage and Eustace at the heart of the story, as it's a fundamental part of the show.
Well, it could be that the Mask somehow ends up in the world of Courage the Cowardly Dog. Maybe he teams up with Courage to fight off the various spooky threats that usually plague Courage's town. The Mask's wacky and powerful abilities would add a whole new level of chaos and fun to the typically eerie scenarios in Courage's world.
Isolation could also be a theme. If a human is new to Nowhere, they might feel isolated among all the strange creatures. This could be a parallel to Courage's own feelings of being an outsider sometimes, and the fanfic could explore how they both deal with that sense of not belonging in different ways.
It could be King Ramses from 'Courage the Cowardly Dog'. He is very powerful and menacing. When combined with the chaos that the Mask can bring, he would be an even greater threat. He could try to use the Mask's power for his own evil purposes, like taking over the entire world or at least the small town where Courage lives.
Courage shows real courage by facing the strange and often terrifying creatures that come to his home. He doesn't just hide away but tries to protect his owners.