A cool plot could be a tournament - style crossover. A powerful being from another dimension decides to host a tournament where fighters from Dragon Ball Z and Devilman are invited. Characters like Vegeta and Devilman's friend Akira Fudo would compete. There could be unexpected alliances and rivalries. For example, Piccolo might initially see Devilman as a threat but later realize they have a common goal of protecting their respective worlds. And in the end, they all have to team up against the true evil that the tournament organizer has in store.
If we consider the potential of power - up in a crossover, it might be a new form of Goku. Imagine if Goku were to combine the power of the Saiyan God form with some of Devilman's demon - like abilities. He could become an entirely new and extremely powerful entity. But then again, Devilman has the potential to merge with other powerful demons in his world. So, in a sense, it could be either Goku with his new form or a super - powered Devilman depending on how the fanfiction unfolds.
In a 'Harry and Dragon Ball' crossover fanfiction, perhaps the Deathly Hallows and the Dragon Balls have some sort of hidden connection. Harry, Ron, and Hermione are on a quest to find out more about this connection when they are suddenly whisked away to the Dragon Ball universe. There, they meet Bulma who is intrigued by their magic. Harry's scar starts acting up in a new way, as if it's reacting to the powerful ki in this universe. They soon learn that a new, powerful dark force is emerging that is related to both Voldemort and some of the Dragon Ball villains. They must combine their magic and the power of the Dragon Balls to stop this new threat.
One idea could be a crossover with Neon Genesis Evangelion. Devilman and the Eva pilots could team up to fight a common enemy that threatens both their worlds. Maybe a new type of demon that has the ability to control Angels.
In a crossover fanfiction, it could be that the magic in the Harry Potter world has an unexpected effect on Devilman. His powers could be enhanced or changed in some way. Meanwhile, Voldemort becomes interested in Devilman's powers and tries to control him. But Devilman, with the help of Harry Potter and his allies, resists and turns the tables on Voldemort, using his own unique powers combined with wizarding magic to defeat the dark lord once and for all.
A fan - favorite is 'Devilman in the Dragon Ball Z Universe'. This story has Devilman being transported to the Dragon Ball Z world. He has to adapt to the new power levels and the different rules of combat. It's full of exciting battles and the exploration of how Devilman's powers compare to those of the Saiyans and other Z - fighters.
One idea could be a crossover with the Naruto universe. Goku and Naruto could team up to fight a common enemy. Maybe they face an evil villain who has the power - stealing abilities like Cell and the ability to use powerful ninja jutsus. Another plot could be a crossover with One Piece, where Luffy and Goku have a friendly competition about who can eat more food and then end up having to work together to defeat a new threat at sea that has the strength of Saiyans and the deviousness of pirates.
Well, a cool plot for Dragon Ball Xenoverse Crossover Fanfiction could be a time - traveling crossover. Imagine characters from different anime universes being brought to the Dragon Ball Xenoverse timeline. For example, characters from Fullmetal Alchemist arrive in the Xenoverse. Edward could use his alchemy skills against the Dragon Ball villains, and Alphonse could have some really interesting interactions with the Dragon Ball characters, like Bulma or Master Roshi.
One idea could be that Broly is transported to an alternate universe where he teams up with Goku from a different timeline to fight a new, powerful enemy. They have to combine their unique fighting styles to stand a chance.
One possible plot could be that the characters from Awog end up in the Dragon Ball universe. They might initially be confused by the high - power levels and strange creatures. The Saiyans could mistake them for new threats or allies. For example, Goku might offer to train them in his martial arts style, leading to some comical and action - packed training sessions as the Awog characters try to keep up with Goku's intense regime.
A plot might involve the Dragon Balls being scattered across the Bleach universe. Ichigo hears rumors about these powerful orbs and starts looking for them. Meanwhile, Goku and his friends also end up in the Bleach world while searching for the Dragon Balls. They meet the Soul Reapers and at first there's some tension. But as they learn more about each other's goals, they work together. The Soul Reapers are fascinated by Goku's power and training methods, and Goku is intrigued by the concept of souls and the afterlife in the Bleach world.