A popular choice is 'Dragon Ball x Bleach: The Spirit - Saiyan Convergence'. Here, the characters from 'Dragon Ball' and 'Bleach' interact. It often delves into how the different concepts of spiritual power in 'Bleach' and ki in 'Dragon Ball' can be related. There are epic battles between the Soul Reapers and the Saiyans, and sometimes there are crossovers in terms of character development, like a Saiyan learning how to use a Zanpakuto.
Another good one is 'Dragon Ball x One Piece: The Pirate - Saiyan Alliance'. In this fanfiction, the Dragon Ball characters team up with the Straw Hat Pirates. It's really exciting to see Goku and Luffy working together to face common enemies, and the story plays around with the different power levels and abilities in a creative way. For example, they might use the One Piece Devil Fruits in combination with Dragon Ball ki attacks.
One great 'Dragon Ball' crossover fanfiction is 'Dragon Ball x Naruto: The Saiyan Ninja'. It combines the high - energy battles of 'Dragon Ball' with the ninja - based world of 'Naruto'. The story often has interesting power - up scenarios where the characters from both universes learn from each other's fighting styles.
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.
Some of the best Dragon Ball fanfiction include 'The Saiyan Invasion Redux'. In this one, the Saiyans return in a different way than expected, and the story takes on a whole new direction. 'Trunks' Time - Travel Dilemma' is also quite interesting as it explores the consequences of Trunks' time - traveling in more depth. Also, 'Master Roshi's Last Wish' is a fan favorite. It focuses on Master Roshi and his final, selfless wish that has a huge impact on the Dragon Ball world.
One great 'Dragon Ball GT Crossover Fanfiction' is the one where Goku from GT crosses over with the world of 'One Piece'. It's really interesting to see how Goku's power levels compare to the Devil Fruits abilities in 'One Piece'. The author does a great job of creating new adventures for Goku in this strange new world.
There's also 'Dragon Ball x DC Comics: The Super Saiyan Heroes'. This fanfiction has the Dragon Ball characters interacting with DC superheroes. Picture Goku fighting alongside Superman or Vegeta having a showdown with Batman. It's full of action - packed scenes and some really cool character dynamics as they compare their superpowers.
A unique idea is when they cross over with 'Star Wars'. Imagine Goku using his Ki blasts against lightsabers. It brings two very different universes together in a really exciting way.
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.
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.
Well, 'Dragon Ball: Legacy of the Saiyans' is a top - notch fanfic. It explores the backstories of the Saiyans in a more in - depth way than the original series. There are detailed descriptions of their culture and how it influenced the characters we know. 'Goku's New Adventure' is also a great read. It takes Goku on a journey that is different from the canon storyline. He faces new enemies and has to learn new techniques to overcome them. And then there's 'The Dragon Ball Multiverse Fanfic'. This one plays around with the idea of different universes in the Dragon Ball world, which is really fascinating.