Fanfiction ideas combining Danny Phantom and Dragon Ball Z

One idea could be a crossover where the powerful Saiyans from Dragon Ball Z end up in the Sekirei universe. They might get involved in the Sekirei Plan, either as protectors or accidental disruptors. For example, Goku could befriend some of the Sekirei due to his kind nature and his love for a good fight.

One idea could be a crossover where Goku meets Superman. They could have a friendly sparring match to test each other's strength. Maybe they start off misunderstanding each other's motives but then realize they are both protectors of their respective universes.

One idea could be a crossover where Goku and Naruto meet. Maybe they start off as rivals, each thinking their own world's way of fighting is superior. But then they face a common enemy that forces them to combine their powers. For example, a powerful demon that can absorb chakra and ki. They would have to learn from each other's techniques to defeat it.

A fanfiction could also explore a scenario where Peter Parker gets some ghostly powers similar to Danny's due to an experiment gone wrong. He then has to learn how to control these new powers while still being Spiderman. Danny could come to help him understand and master these powers.

One idea could be that the Joker somehow finds his way into the Danny Phantom universe. Maybe he teams up with one of Danny's villains, like Vlad, thinking they can cause more chaos together. They could plan to use Danny's ghost powers for some really wild and dangerous stunts across both the human and ghost worlds.

A more complex fanfiction could be about Starfire getting stuck in Danny's world. She has to adapt to living in a world where ghosts exist and not everyone is as friendly as in her own. Danny helps her understand the rules of his world, and in the process, they develop a strong friendship that could potentially turn into something more romantic as the story progresses.

One idea could be to have the characters from Dragon Ball Z attend the school in Highschool DxD. For example, Goku could be a transfer student with his incredible power causing quite a stir among the devils, angels and fallen angels. He might be confused by the different social dynamics and the whole concept of the supernatural school setting.

One idea could be that Danny Phantom gets transported to Poison Ivy's world. He has to deal with her plant - based powers while trying to find a way back home. Maybe he teams up with her against a common enemy who is threatening both the Ghost Zone and the natural world.

Another fanfiction concept is that a character from The Walking Dead dies and becomes a ghost like in Danny Phantom's world. Danny has to help this new ghost come to terms with their situation while also dealing with the zombie apocalypse around them. This could explore themes of death, acceptance, and survival all at once.

One idea could be that Danny Phantom accidentally crosses paths with the Grim Reaper. Maybe the Grim Reaper is after a ghost that Danny has befriended, and Danny has to convince the Grim Reaper that the ghost has a good reason to still be around. For example, the ghost could be helping Danny protect Amity Park from other more malevolent ghosts.