In a Dragon Ball alternate universe fanfiction, there could be a plot where all the Saiyans survived the destruction of Planet Vegeta. They form an alliance with Earth and together they face new threats from a different galaxy. This would change the power dynamics completely. There could also be a scenario where the Kaioshin are the main antagonists. They use their divine powers in a corrupt way, and the Saiyans and Earthlings have to join forces to stop them. And what about a universe where the concept of ki is different? Maybe it can be transferred between people like a currency, and battles are fought not just with strength but also with strategic ki trading.
One idea could be a world where the darkspawn and the elves form an alliance. They might come together out of mutual desperation, the darkspawn seeing the elves' connection to the Fade as an advantage, and the elves seeing the darkspawn's numbers as a means to gain power and protection from the other races. Another plot could involve a Dragon Age universe where magic is completely outlawed. Mages would have to go into hiding, and templars would be more like a secret police force, leading to a lot of underground resistance and intrigue. A third idea is an alternate universe where the Qunari have taken over most of Thedas. Their strict way of life would reshape the cultures and societies of the other races in ways that are both fascinating and disturbing.
A plot could revolve around a group of underdog fighters in Universe 2 who train in secret to enter the Tournament of Power. They face numerous challenges during their training, including a lack of resources and interference from more powerful groups. But through their determination and unique fighting styles, they manage to make a name for themselves in the tournament.
One idea could be exploring a new transformation that combines the power of multiple existing forms. For example, a fusion of Super Saiyan and Kaioken that gives the character an edge in battles. Another could be delving into the backstories of minor characters in the Macho Universe, like how they got their powers.
One idea could be creating a new character who has a unique power that challenges the existing power hierarchy in the Dragon Ball Super universe. For example, a character who can manipulate time in a different way than Whis or Beerus. Another plot could involve a tournament where fighters from different universes have to team up in unexpected combinations. This would lead to new rivalries and friendships. And perhaps a plot where the Dragon Balls are used in a completely different way, like to restore a destroyed universe but with some unforeseen consequences.
One idea could be a story where Goku and Vegeta from Dragon Ball Super end up in the world of Dragon Ball GT by some sort of time - space rift. They then have to team up with the GT versions of themselves to fight a new, powerful enemy that is threatening both timelines.
One idea could be an alternate universe where the Fairy Tail guild is a secret organization in a steampunk world. The magic is powered by steam - powered devices and the characters have to adapt their powers to this new technology. For example, Natsu could use his fire magic to fuel steam engines in a more efficient way.
One idea could be that Naruto finds himself in a universe where the Akatsuki are the heroes. He has to figure out how to co - exist or even join them to get back to his own universe. Another plot could be Naruto entering a universe where everyone has a different elemental chakra, like some have sound - based chakra instead of the usual five. A third idea is that he hops into a universe where the shinobi world is a utopia, but there are hidden secrets that are threatening to destroy this perfect world and he has to help.
In the 'naruto juubi alternate universe fanfiction', it would be interesting if the characters' relationships were reversed. Like Sasuke could be the one trying to protect Naruto who has the Juubi's power, because he realizes that Naruto's power is the key to a new world order that could benefit all ninjas.
One interesting plot could be if Harry was sorted into Slytherin instead of Gryffindor. It would completely change his relationships and how he's perceived. He might have to deal with the prejudices of his own house while also trying to figure out his role in the fight against Voldemort.
One interesting plot could be Percy in a steampunk alternate universe. He might have a mechanical sword and face off against steam - powered monsters. Another idea is an alternate universe where the Greek gods are modern - day celebrities, and Percy has to deal with the chaos of their fame while still being a demigod. Maybe in a fantasy - based alternate universe, Percy could be a wizard - like figure, using both water powers and magic spells.