Potential characters could include powerful ghost lords that Danny has to deal with. These could be ancient and very powerful ghosts who see Danny as a threat or an opportunity. There might also be some half - ghost characters like Danny, but with different origins. They could be his allies or enemies. And let's not forget the minor ghosts that populate the Ghost Zone, they could add flavor to the story, either by helping Danny or causing trouble for him.
A fanfiction with Danny Phantom raised in the Ghost Zone could explore his character development in a whole new light. Since he was raised there, he may not have the same sense of human morality. He might see humans as outsiders or even threats. His appearance could also be different, maybe more ghost - like. His friends and family in the human world would be strangers to him, and the story could be about him either rediscovering his human side or fully embracing his ghostly nature.
Well, Danny is obviously one of the main characters. He's the King of the Ghost Zone in this fanfiction, so he's at the center of most of the action. Sam and Tucker are likely to be important characters too. They often support Danny in his adventures in the regular Danny Phantom series, and in this fanfiction, they could be helping him rule or deal with problems in the Ghost Zone.
In such a fanfiction, Danny's appearance could be altered too. The Ghost Zone's influence might make him look more ghostly. His story could involve him trying to find his place in both the human world and the Ghost Zone. He would face challenges like being accepted by humans despite his different upbringing and also trying to fit in among the complex social hierarchies of the Ghost Zone. It could be a story full of self - discovery, action, and adventure as he navigates these two very different worlds.
One great fanfiction could be where Danny has to deal with new threats in the Ghost Zone while trying to balance his life as a prince and a human. Maybe he forms an alliance with some unexpected ghosts to protect his throne.
Well, he might feel extremely isolated. In the Phantom Zone, he would probably struggle to use his magic in the same way as in the normal wizarding world. Maybe he'd have to find new ways to defend himself and escape.
He could try to use his magic in a very creative way. Maybe he could focus all his energy into a powerful spell that could break the barriers of the Phantom Zone.
One interesting plot could be Danny facing a new, extremely powerful ghost in the Ghost Zone who challenges his title as the King. This ghost might have unique powers that Danny has to figure out how to overcome.
There could be a rogue ghostly entity that was once a friend or ally of Danny's family. This entity might feel betrayed by Danny's family for some reason and now wants to take revenge on Danny. Since Danny was raised in the Ghost Zone, he is an easy target for this entity. This antagonist could manipulate the other ghosts against Danny and create all sorts of problems for him as he tries to figure out his place in the Ghost Zone and the human world.
Power struggles are a common theme. Since Danny is the Prince of the Ghost Zone, there are always other ghosts who want to take his position. This creates a lot of drama and action in the fanfictions.