Well, in a fanfiction scenario of being reincarnated in the DC Universe with wishes, it really depends on the nature of the wishes. If a person wished to be a part of a particular superhero team, like the Justice League, right from the start, it would completely alter their story arc. They could use their wishes to have knowledge of future events in the DC Universe and prevent disasters or team up with their favorite heroes in unique ways.
A character could use their wishes to alter the history of the DC Universe. Maybe they wish that a certain villain never came to be. By doing so, they could change the fates of many heroes and the overall state of the universe. They could also wish to have a different origin story for themselves, something that gives them a unique place in the DC cosmos. For example, if they wished to be an alien from a different planet than the known ones in DC, it would open up new story possibilities.
The Flash is an exciting character to reincarnate as. You'd have super - speed, which would open up a whole new world of possibilities in the DC universe. You could run so fast that you travel through time or save people in the blink of an eye. Aquaman is also a cool option. You'd get to rule the underwater kingdom and communicate with sea creatures. Plus, his trident gives him some great powers. And don't forget about Martian Manhunter. His shape - shifting, telepathy, and super strength would make for a very interesting reincarnation.
A really interesting plot for 'Reincarnated in DC Universe fanfiction' could be that the reincarnated character is from our world and has a deep knowledge of all the DC characters' backstories. They are reincarnated as a minor character in Arkham Asylum. Using their knowledge, they try to rehabilitate some of the villains there, like the Riddler or Two - Face. They could introduce new therapies or ways of thinking that might actually start to change the villains for the better. This would be a unique take as it focuses on the psychological aspect of the DC universe rather than just the action - packed superhero battles.
Batman is quite popular. Reincarnating as him gives the character a chance to have all his gadgets and detective skills. Also, Superman is a common choice. Having his superpowers and being able to fly around Metropolis would be exciting. Wonder Woman is another one. Her connection to the Amazonian culture and her superhuman abilities make for great fanfiction material.
He would probably be seen as a very powerful and unique being. His chakra abilities could be mistaken for some kind of meta - human power. Maybe he'd team up with the Justice League to fight against powerful threats like Darkseid. His skills in combat and his ability to use shadow clones would give the League an edge in battles.
In reincarnated with wishes fanfiction, authors develop characters through their reactions to the new world they are in. Since they have wishes at their disposal, their choices regarding how to use those wishes say a lot about them. A character who wishes for wealth and then uses it to help the poor is very different from one who hoards it. Also, the memories of their past life can create internal conflicts. Maybe they had a love in their past life and are trying to find that person in the new life while also dealing with the new relationships that come with their reincarnation. All these elements work together to create complex characters.
Well, often in reincarnated with wishes fanfiction, a plot twist can be the source of the wishes. It might turn out that the entity granting the wishes has an ulterior motive. For instance, it could be using the character's wishes to further its own evil plan. Or, the character might discover that their wishes are linked to a prophecy they were unaware of. This could completely change the direction of the story as they then have to figure out how to deal with this new revelation and the implications it has on their reincarnated life.
One idea could be a crossover where Vegeta ends up in Gotham City. He might initially be seen as a threat by Batman, but then they realize they can work together to take on a common enemy like Darkseid. Vegeta's combat skills and power would be a great asset in the DC universe filled with various threats.
In such a fanfiction scenario, one might gain unique Pokemon abilities. For example, if the person wished for flight, they could be reincarnated as a flying - type Pokemon like Pidgeot and soar through the skies. It would be an exciting adventure, exploring the Pokemon world from a new perspective.