In a sense, it could be thought of as related to the idea of Ghost Rider fanfiction. Danny Phantom is about a boy who becomes a half - ghost and has to navigate a world of ghosts and other strange phenomena. This is somewhat similar to Ghost Rider's journey with his otherworldly powers. But Danny Phantom is an independent creation with its own lore. It has its own backstory for Danny's transformation, his relationships with other characters like his friends and family, and different antagonists. So while there may be some fanfiction - like connections, it stands on its own as a unique story.
I really don't have enough information to provide the details of the 'Danny Ghost' real story. It could be a very niche or regional story that hasn't been widely known.
A common theme in these fanfics is Danny's growth as a character. When he enters the Ghost Zone as a child, he is initially scared and unsure. But as the story progresses, he becomes more confident. The Ghost Zone, accessed via the portal, is like a whole new world for him. He might make allies and enemies there, and his relationship with his family back home also changes as he experiences these things in the Ghost Zone.
One great Danny Phantom Ghost King fanfiction is 'The Reign of the Ghost King'. It delves deep into Danny's new role as the Ghost King, exploring how he balances his human life with his ghostly duties. The character development is really well - done in this fic.
For the crossover, a good plot could be that a new type of ghost appears that is immune to Danny's ghostly powers. The Ghost Hunt team, which has encountered a similar situation before, offers their expertise. They introduce Danny to a special type of ectoplasm - based weapon that can harm this new ghost. Danny then teaches them some of his combat moves as a half - ghost to better fight the ghost.
Perhaps it's Danny Robins' unique perspective that makes his Ghost Story unique. He might have a particular way of telling the stories that sets them apart from others in the genre.
One idea could be that Danny, as a half - ghost, has to prove himself to the Ghost King. Maybe there's a tournament in the Ghost Zone where Danny enters to show his worth. This could lead to some epic battles and alliances with other ghosts.
The scariest part might be when Danny faces really powerful and malevolent ghosts. Their appearance can be quite terrifying, with dark auras and menacing looks.
In a lot of fanfictions, Danny himself often becomes the most powerful ghost. As he grows and learns to control his powers better, he can surpass many of the traditional powerful ghosts in the show. For example, in some fics, he gains the ability to absorb other ghosts' powers, making him extremely formidable.