One idea could be a crossover with the Naruto universe. Imagine Goku meeting Naruto and them having a friendly sparring match. Another could be a crossover with the One Piece world, where the Z - fighters team up with the Straw Hat Pirates to take on a common enemy. And a crossover with the Harry Potter universe, with the Saiyans learning magic at Hogwarts.
One idea could be a crossover with the Naruto universe. Goku and Naruto could have an epic battle or team up against a common enemy. Another idea is a crossover with One Piece, where the Z - fighters join Luffy's crew for a while. Or perhaps a crossover with Harry Potter, where the Dragon Ball characters have to deal with magic in the wizarding world.
A great 'Dragon Ball Super Crossover Fanfiction' concept might involve a crossover with the Harry Potter world. The Saiyans could visit Hogwarts. Maybe Vegeta could be really intrigued by the magic there and try to learn some spells, while at the same time the wizards are in awe of the Saiyans' power. There could be a dark wizard who wants to use the Dragon Balls for his own evil purposes, and the Hogwarts students and the Z - fighters have to work together to stop him.
One idea could be a battle between Goku and Superman. They could start off as rivals, each thinking their own planet needs more protection. As they fight, they gradually realize they have more in common than they thought, like their strong sense of justice. Then they team up to face a common enemy, like Darkseid and Frieza working together.
A crossover with the One Piece universe could also be cool. Imagine Luffy and Goku having a friendly competition to see who can defeat more enemies. The different power systems, like Devil Fruits and ki, would create interesting battles and interactions.
A crossover with One Piece might also be cool. Imagine Luffy and Goku teaming up. Luffy's rubber abilities combined with Goku's super strength could make for some really fun and unique battle scenes. They could be on a quest to find a powerful treasure that has both the power of the One Piece world and the Dragon Balls.
One idea could be a crossover with the Naruto universe. The Saiyans could learn about chakra and how to use it, while the ninjas are amazed by the power of ki. Another could be a time - traveling plot where the Dragon Ball Heroes characters end up in the past of their own world and have to prevent a major catastrophe that changes the course of their history. Maybe a crossover with One Piece where they search for the One Piece together and face off against the powerful pirates and the Marines.
Another concept could be that Sonic and his friends end up in the Dragon Ball Z world due to some sort of interdimensional rift. They have to adapt to the new world with its different power levels and fighting styles. Sonic could teach some of the Z - fighters his unique spin - dash and homing attack moves, while Goku could show Sonic how to harness and control ki energy.
One idea could be that Goku and Naruto meet in a strange dimension. They initially mistake each other for an enemy but then realize they have a common goal, like saving both their worlds from a new powerful villain. Goku could teach Naruto some of his ki control techniques, and Naruto could show Goku some of his more unique jutsu.
One idea could be that Goku and his friends are on a quest to find the rarest Pokemon in the Dragon Ball Z world. Maybe the Dragon Balls have the power to summon legendary Pokemon. For example, the Saiyans could use their fighting skills to train Pokemon for battle. Another idea is that the villains from Dragon Ball Z, like Frieza, try to capture powerful Pokemon to use in their evil plans.
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.